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1
Miller, Kevin Blaine. "A comparison of treatment impacts between invisalign and fixed appliance therapy during the first seven days of treatment." [Gainesville, Fla.] : University of Florida, 2005. http://purl.fcla.edu/fcla/etd/UFE0010291.
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Thesis (Ph.D.)--University of Florida, 2005.Typescript. Title from title page of source document. Document formatted into pages; contains 36 pages. Includes Vita. Includes bibliographical references.
2
Du, Raan Frederick Johannes. "Influence of orthodontic caregiver behaviour on the perceived satisfaction of patients during orthodontic treatment." Thesis, University of the Western Cape, 2014. http://hdl.handle.net/11394/4247.
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Magister Scientiae Dentium - MSc(Dent)Influence of orthodontic caregiver behaviour on the perceived satisfaction of patients during orthodontic treatment. Dr. F.J. du Raan M.Sc. (Orthodontics) thesis, Department of Orthodontics, University of the Western Cape. In this thesis I interviewed patients that are busy with orthodontic treatment, as well as those that have undergone orthodontic treatment at the department of Orthodontics at the University of the Western Cape, with the aid of four questionnaires. Patients completed questionnaires to provide general and demographic information, quantify their satisfaction with the orthodontic treatment process, their perception of the orthodontic clinician's behavioural traits and lastly they completed the NEO-FFI personality questionnaire to determine their own personality profile. All these questionnaires were used in previous studies, or they were slightly modified to be applicable to orthodontics. The information gained was used to determine if there are correlations between the patient’s perceived satisfaction of the treatment process with patient specific treatment variables (as acquired from the General information and Demographics Questionnaire ), demographic factors, clinician's behavioural traits and patient specific personality traits and any combination of the above mentioned. We wanted to determine which behavioural traits of the orthodontic caregiver influences the perceived satisfaction with the treatment to the greatest extent. Furthermore, we wanted to determine if certain personality traits of the patients would influence their perceived satisfaction with the treatment process or their perception of the clinician's behavioural traits. The only aspect from the General Information and Demographics Questionnaire that had any correlation to satisfaction with the treatment process or the perception of the clinician's behavioural traits, was whether the patient was treated by a single registrar or multiple registrars. Patients treated by multiple clinicians had a lower average score for satisfaction and orthodontist behaviour. Results from the study shows that all the clinician's behavioural traits do have statistically significant influence on the perceived satisfaction with the treatment process, but certain behavioural traits have a greater influence. Result showed Empathy and Care to have the strongest influence on perceived satisfaction, whereas Motivation has the lowest influence. The NEO-FFI personality questionnaire was used to register each patient's personality profile. Scoring for the following personality traits created the personality profile: Neuroticism, Extraversion, and Openness to Experience, Conscientiousness and Agreeableness. Patient personality profiles were shown to have no significant influence on the patient's perceived satisfaction with the treatment process.Neuroticism was shown to have a weak negative correlation with the Professionalism sub-category of the Orthodontic Clinician Behaviour Questionnaire. Conscientiousness has been shown to have a weak positive correlation with all categories of the Orthodontic Clinician Behaviour Questionnaire It is put forth by the researcher that more time and effort has to be put into improving all aspects of the clinician's behaviour, as it will positively influence the perceived satisfaction of the orthodontic treatment process.Even though there are no significant correlations, patients needs to be screened to determine their personality profiles, as this may lead to slight improved scoring on certain behavioural aspects which may in turn lead to greater patient satisfaction. It may be especially worthwhile to recognise the neurotic patient and treat them on a more personal level, as this may improve their overall satisfaction.
3
Fergus, Kelly-Gwynne Mason. "Esthetic evaluation of edgewise orthodontic treatment in matched class II, division 1 subjects, with and without a MARA." View the abstract Download the full-text PDF version, 2008. http://etd.utmem.edu/ABSTRACTS/2008-022-Fergus-index.html.
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Thesis (M.S. )--University of Tennessee Health Science Center, 2008.Title from title page screen (viewed on July 30, 2008). Research advisor: Edward F. Harris, Ph.D. Document formatted into pages (xi, 174 p. : ill.). Vita. Abstract. Includes bibliographical references (p. 103-112).
4
謝立祺 and Lap Kee Edmond Tse. "A comparative study of the skeletal and dental effects of a modified herbst and the traditional herbst appliances in Southern Chinese: a prospective cephalometric study." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1994. http://hub.hku.hk/bib/B38628454.
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Harris, Angela Manbre Poulter. "Assessment of tooth movement in the maxilla during orthodontic treatment using digital recording of orthodontic study model surface contours." Thesis, University of the Western Cape, 2006. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_2231_1254312268.
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The aim of this project was to measure changes in dimension of the first three primary rugae and to evaluate tooth movement in the maxilla during orthodontic treatment in patients treated with and without premolar extractions.
6
Gladwell, Jason Thomas. "Concurrent Whitening and Orthodontic Treatment." VCU Scholars Compass, 2007. http://scholarscompass.vcu.edu/etd/1469.
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The aim was to evaluate whether a whitening system, when used during the final stages of orthodontics, would yield results comparable to whitening alone. Patients were assigned to either the control (n=20) or experimental (n=26) groups. At T1, patients were given a ten day supply of Trèswhite⢠by Opalescence®, instructions on use, and initial shade determination was made and photographs were taken. At T2 and T3, shade determination was accomplished and updated photographs were taken. Whitening of the teeth occurred in both groups on average, but significantly more whitening was experienced in the experimental group (p < 0.004). An average of 87% of teeth whitened during orthodontic treatment compared to 97% of control teeth (p < 0.01) were judged to be uniform in appearance. In conclusion, the data do not contraindicate the concurrent accomplishment of teeth whitening during orthodontic treatment.
7
Terrana, Nicholas Ralph. "Orthodontist and General Practitioner Perceptions of Invisalign Treatment Outcomes." Master's thesis, Temple University Libraries, 2019. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/578670.
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Oral BiologyM.S.
Objectives: Little is known about the treatment standards and expectations of Invisalign treatment outcomes between orthodontists and general practitioners (GP). The objective of this qualitative research project was to explore how orthodontists and GPs perceive Invisalign treatment outcomes, and to determine which criteria they use to judge successful treatment. Methods: Open-ended interviews were conducted with three orthodontists and two GPs. These interviews were recorded, transcribed, coded and analyzed by the conventional phenomenological qualitative research protocol. Each clinician selected four Invisalign cases that they treated and perceived as successful outcomes. To augment qualitative methods, quantitative data were generated to determine pre-treatment Discrepancy Index (DI) and post-treatment Objective Grading System (OGS) scores as calculated by OrthoCAD software. Results: Independent sample T-tests showed no significant difference in total DI score (p=0.287) and total OGS score (p=0.840) between the orthodontist (n=12) and GP (n=7) cases. Orthodontists perceive incisor torque and smile esthetics as important criteria for successful Invisalign outcomes. In contrast, GPs do not. Orthodontists and GPs unanimously perceive that Class I occlusion is an important criterion for successful treatment. GPs perceive extraction cases as a challenge to obtain successful outcome with Invisalign whereas, orthodontists do not. Conclusions: Differences exist between orthodontist and GP perceptions of what constitutes successful Invisalign treatment. Currently employed standards of excellence can be found in a wide spectrum of finishes; however, they are incapable of defining the excellence of finish. Selective standards differentiate the GPs from orthodontists, but agreement exists for ambition to finish in Class I occlusion. Esthetics and torque are valued higher by the orthodontists than are by the GPs. The utility of current standards- of-care need to be questioned and redefined.
Temple University--Theses
8
Sandretti, Matthew A., Bhavna Shroff, Steven J. Lindauer, and Al M. Best. "Restoring Lateral Incisors and Orthodontic Treatment: Perceptions among General Dentists and Othodontists." VCU Scholars Compass, 2015. http://scholarscompass.vcu.edu/etd/3727.
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The purpose of this study was to identify and compare preferences and perceptions of orthodontists and general dentists when restoring peg-shaped lateral incisors. The investigation sought to summarize these preferences with regard to treatment planning, tooth preparation and interdisciplinary communication. A pair of mailed and electronic surveys was distributed to 1,500 general dentists and orthodontists, respectively. The results indicated that general dentists perceived that general dentists held the primary decision-making responsibility, while orthodontists disagreed (P<0.0001). Orthodontists prioritized the treatment goals of Class I canine relationship and overbite/overjet more significantly than general dentists, whom valued tooth proportions more highly (P<0.0001). General dentists reported receiving significantly less input than orthodontists report seeking (P<0.0001).The consensus of both groups showed that the tooth should be positioned centered mesiodistally and guided by the gingival margins incisogingivally. Both groups agree that orthodontists must improve communication to improve treatment results.
9
Reddick, Chad R. "A comparative study of nonextraction treatment efficiency using conventional edgewise brackets and self-ligating brackets." Thesis, Birmingham, Ala. : University of Alabama at Birmingham, 2007. https://www.mhsl.uab.edu/dt/2009r/reddick.pdf.
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Ferreira, Dominique Abergail. "A critique of the index of the complexity, outcome and need." Thesis, University of the Western Cape, 2005. http://etd.uwc.ac.za/index.php?module=etd&.
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The development of a uniform method of epidemiological assessment and grading of malocclusion has been of interest for several decades. Recently, Daniels and Richmond (2000) proposed a new orthodontic index namely the Index of Complexity, Outcome and Need (ICON). Their aim was to develop a single index for assessing treatment inputs and outcomes.The aim of this study was to critique the ICON and to assess to the extent to which each component of the ICON fulfils the ideal requirements of the ideal index as identified in a World Health Organization Report (WHO, 1966). The study was performed in three parts: 1) a gold standard was established to test reliability and validity of the ICON
2) to assess ease of use and simplicity of the index
3) and to test the applicability of the index on patients and study casts. The results showed that the ICON identified 25% of the cases as &lsquo
no treatment&rsquo
, as apposed to the 100% of the gold standard. Validity of the index was shown to be &lsquo
poor&rsquo
for complexity (? = 0.2) and degree of improvement (? = 0.34) and &lsquo
excellent&rsquo
for outcome. Reliability was high for all the components except for treatment need (? = 0.63). This study concluded that except for complexity and degree of improvement, the index performed well with respects to reliability, validity (of treatment outcome), ease of use and simplicity and applicability to patient and study casts.
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Phillips, Joseph, and James Chen. "PATIENT AND PARENT PERCEPTIONS ON OUTCOMES IN EARLY ORTHODONTIC TREATMENT." Scholarly Commons, 2020. https://scholarlycommons.pacific.edu/dugoni_etd/3.
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Introduction: Orthodontics has clinical benefits, however, the psychosocial outcomes are not well understood. These soft benefits are often classified as aesthetic, functional, and psychosocial, however, there is limited work understanding these outcomes as reported directly from the patient. By better understanding the patient’s perspectives, we can continually refine our clinical model to be patient-centric and more appropriately manage the patient’s expectations and experiences. Materials and Methods: This is a cross-sectional qualitative study of 20 parents of 24 children ages 8-11 years. Participants were remotely interviewed using a semi-structured chronologically based line of questioning to elucidate their perceived outcomes of early orthodontic treatment or phase one. A content thematic analysis using a framework approach was used to analyze the resulting data. Results: The thematic analysis uncovered four major themes and associated subthemes as follows (1) dental health including functional changes, aesthetic improvement, and improved cleansability; (2) opportunity cost: meaning harnessing growth for lasting change, avoidance of future orthodontic treatment, avoidance of future dental treatment, and supervision of growth; (3) social outcomes: encompassing external perception and acceptance, self-perception, parental perception, and reduced dental anxiety; and (4) behavioral changes: including the correction of bad habits, development of good oral hygiene, and an increase in responsibility of the patient. Conclusions:This study highlights the depth of psychosocial benefit perceived by patients undergoing early orthodontic treatment, with the main outcome being functional improvement, followed by an advantage to treatment at a young age, and an improvement in aesthetics. Patients did not recognize an increase in self-perception which is contrary to outcomes previously found in other age groups.
12
Harrison, Jayne Elizabeth. "Evidence based orthodontics : the way forward or an unrealistic dream?" Thesis, University of Liverpool, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.250366.
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Serebe, Catherine. "The orthodontic treatment needs in children aged 12-15 years in a school in Khomas region, Namibia." University of the Western Cape, 2018. http://hdl.handle.net/11394/6658.
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Magister Scientiae Dentium - MSc(Dent)In modern day dentistry, aesthetics forms an integral part of our social perception almost as much as functionality. Malocclusion has been brought to the forefront of developmental anomalies as it can affect mastication, speech as well as the appearance of the face. Furthermore, pre-pubertal and pubertal changes have compounded existing malocclusions in this growth period thus spiraling the need for orthodontic treatment. Therefore, it is essential to determine the normative and selfperceived need for orthodontic treatment in a population. The epidemiological data collected can be used to facilitate policy changes to manage malocclusion in Khomas, Namibia. Aim: The aim of this study was to determine the orthodontic treatment needs of a population of 12-15 year-old children attending a school in Khomas and to express it as percentages of those with subjective and objective orthodontic treatment need over the whole sample population. The objectives were to find associations between treatment needs and some demographic and socioeconomic factors.
14
Cox, Stan C. "A comparative study of extraction treatment efficiency using conventional edgewise brackets and self-ligating brackets." Thesis, Birmingham, Ala. : University of Alabama at Birmingham, 2008. https://www.mhsl.uab.edu/dt/2008m/cox.pdf.
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Williams, C. Lesley. "A computer-based decision support system for orthodontic diagnosis and treatment planning." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq21223.pdf.
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Moylan, Heather. "Accuracy of a smartphone-based orthodontic treatment monitoring application." VCU Scholars Compass, 2018. https://scholarscompass.vcu.edu/etd/5393.
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Objectives: Dental Monitoring® (“DM,” Dental Monitoring, Paris, France), is a cloud-based software that allows orthodontists to track patients’ treatment remotely. The purpose of this study was to investigate the accuracy of the software in making linear measurements.
Methods: Patients took intraoral photographs using the DM application, immediately followed by impressions for plaster models. Intercanine and intermolar width and arch depth measurements were made by DM and compared to measurements made on the plaster models. Data was analyzed using two one-sided t-tests for equivalence with equivalence bounds of
+/-0.5mm. Significance level was set at 0.05.
Results: Thirty sets of measurements were compared. The intercanine and intermolar measurement differences were on average 0.17mm and -0.02mm, respectively, and were deemed equivalent. The arch depth measurements had an average difference of -0.54mm and were deemed not equivalent.
Conclusion: The monitoring software seems to provide an accurate assessment of linear tooth movements.
17
Danyluk, Ken. "The development of an objective orthodontic treatment-need index." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape17/PQDD_0023/MQ32092.pdf.
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Best, Alexandra D. "Comparison of treatment management between orthodontists and general practitioners performing clear aligner therapy." VCU Scholars Compass, 2016. http://scholarscompass.vcu.edu/etd/4158.
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The purpose of this study was to investigate differences in case confidence, treatment management, and Invisalign® expertise between orthodontists and general dentists. A survey was mailed to 1,000 randomly selected orthodontists and general dentists, respectively, who are Invisalign® providers, and results were analyzed. The results indicated that orthodontists treated significantly more Invisalign® cases and received more Invisalign® training than general dentists (P
19
Ghaffari, Ashkan. "Treatment Outcomes and Retention in Medicaid and non-Medicaid Orthodontic Patients." VCU Scholars Compass, 2008. http://scholarscompass.vcu.edu/etd/1520.
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Medicaid orthodontic patients have been shown to miss more appointments and break more appliances than self-pay patients, indicating a greater tendency toward non-compliance. Lack of compliance during the post-treatment phase can be detrimental to retention. The purpose of this study was to determine whether there is a difference in PAR score changes between Medicaid and non-Medicaid patients during and after orthodontic treatment. PAR scores were determined using study models of 43 Medicaid and 39 non-Medicaid patients before and at the end of active treatment, and 24 Medicaid and 42 non-Medicaid patients at the end of treatment and at an average of 13 months post-treatment. PAR scores generally reduce during treatment and will increase if relapse occurs. Rates of PAR score change during and after treatment were compared between Medicaid and non-Medicaid patients using the Mann-Whitney U-test. The mean initial PAR score was greater in the Medicaid group (31.95 versus 23.28; p=0.003) while there was no significant difference found between the two groups for the end of treatment PAR scores (3.22 versus 2.93; p=0.451). The rates of PAR score improvement during treatment (14.07/year versus 12.14/year; p=0.203) and worsening after the removal of orthodontic appliances (2.04/year versus 2.91/year; p=0.872) were found not to differ between the two groups. It was found that the rate of PAR score improvement during treatment did not differ between Medicaid and non-Medicaid patients. During the post-treatment period, the rate of PAR score worsening was also found not to differ.
20
Olson, Jeffrey C. "Comparison of Patient Factors Influencing the Selection of an Orthodontist, General Dentist, or Direct-To-Consumer Aligners for Orthodontic Treatment." VCU Scholars Compass, 2019. https://scholarscompass.vcu.edu/etd/5766.
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Purpose: To evaluate the factors that influence potential orthodontic patients choosing between an orthodontist, general dentist, and direct-to-consumer (DTC) aligners for their treatment, and to determine the demand for each provider type.
Methods: An electronic survey was administered to 250 individuals among the general population of adults in the United States. Questions were designed to determine the respondent’s level of interest in pursuing orthodontic treatment with each provider type, evaluate their current level of knowledge concerning provider options, and identify factors influencing their selection. Pearson’s chi-squared test and ANOVA were used to evaluate the factors influencing patients in their selection.
Results: When asked their preference in provider type, 43.8% of respondents selected orthodontist, 34.1% selected DTC aligners, and 22.1% selected general dentist. Among respondents with the highest level of interest in pursuing orthodontic treatment, 50% selected an orthodontist and 27% selected DTC aligners. For respondents with moderate levels of interest in pursuing treatment, only 21% selected an orthodontist and 48% selected DTC aligners. The biggest perceived advantage of treatment with an orthodontist was quality of treatment, and the biggest disadvantage was cost. For DTC aligners, the biggest perceived advantage was convenience, followed by cost, and the biggest disadvantage was quality of treatment. Among adults with children, 34% selected DTC aligners for themselves and only 16% selected DTC aligners when selecting for their children.
Conclusion: Adults in the United States have similar levels of interest in pursuing orthodontic treatment with orthodontists and DTC aligners and, to a lesser degree, general dentists. A significant portion of those who select DTC aligners for their treatment are patients who would not have otherwise undergone treatment with an orthodontist. Patients tend to select orthodontists due to quality of treatment, whereas DTC aligners are selected due to convenience, followed by cost. Even among parents who prefer DTC aligners for their own treatment, parents tend to select an orthodontist for their child’s treatment.
21
Willmot, Derrick Robert. "Measurement of demineralised white enamel associated with orthodontic treatment." Thesis, University of Sheffield, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.340219.
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Gupta, Vikas, and James Chen. "Removable Appliance Therapy for Interceptive Orthodontic Treatment." Scholarly Commons, 2021. https://scholarlycommons.pacific.edu/dugoni_etd/16.
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Introduction: Socioeconomically disadvantaged children have limited access to orthodontic services not only because of their families’ competing needs for limited resources, but also because of the limited availability of orthodontists in their communities and a shortage of orthodontists who are willing to treat patients enrolled in Medicaid. We will systematically explore the hypothesis that an early interceptive treatment protocol using removable appliances provides the same treatment outcome but better cost-effectiveness than a traditional fixed-appliance protocol. Methods: Interim data on a prospective study with patients being treated either in private practice with rational fixed Phase I orthodontic treatment (n=11) or in a community clinic with removable interceptive orthodontic treatment (n=10). Initial and post treatment study models were acquired along with pretreatment PAR and clinical photos. PAR and ICON scores were assessed on all initial and final casts. Cost effective analyses were performed comparing the two treatment groups as well as comparing the removable group to no treatment. Sensitivity analyses were performed to assess the robustness of our data while manipulating certain treatment outcome variables. Results: For the fixed group the average PAR score at T2 was 7.6 with a 68% reduction from T1 to T2, while the ICON average score was 16.2 with a 67% reduction. In the removable group the average PAR score at T2 was 13.4 with a lesser reduction from T1 to T2 than the fixed group at 48% (p=0.20), while the ICON average score was 25.3 with a significantly lower reduction of 39% when compare to the fixed group (p=0.037). Cost effectiveness analyses showed that the removable appliance treatment protocol was cost effective when compared to no treatment but not cost effective when compared to 3 the traditional fixed Phase I treatment using the studies measured probabilities of success. Conclusion: The removable appliance protocol used at the Fruitvale community clinic can effectively reduce the severity of malocclusions. However, in order for this treatment to be cost effective when compared to a traditional fixed Phase I protocol it needs to demonstrate consistent clinical results and minimize the probability of “No Improvement”.
23
Teramoto, Lucia. "Diagrama de Andrade como auxiliar no diagnostico e planejamento ortodontico." [s.n.], 1998. http://repositorio.unicamp.br/jspui/handle/REPOSIP/288078.
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Orientador: Maria Helena Castro de AlmeidaTese (doutorado) - Universidade Estadual de Campinas, Faculdade de Odontologia de Piracicaba
Made available in DSpace on 2018-07-23T22:09:34Z (GMT). No. of bitstreams: 1 Teramoto_Lucia_D.pdf: 3749710 bytes, checksum: f080aa90d428d1f29b8ab8fa4c53b41d (MD5) Previous issue date: 1998
Resumo: Este trabalho teve como objetivo aplicar o diagrama de Andrade, como auxiliar no diagnóstico e planejamento ortodôntico, nos casos de maloclusão de Classe II divisão 1 de Angle. Foram empregados 40 documentações de indivíduos, metade dos quais foram tratados ortodônticamente sem indicação de extração de pré-molares e o restante tratados com indicação de extração dos pré-molares. O diagrama individualizado, construído com medidas obtidas da cefalometria e do modelo da arcada dentária mandibular, foram sobrepostos aos modelos em gesso, cujos resultados mostraram ser o mesmo confiável na determinação ou não de expansão das arcadas dentárias (forma da arcada dentária mandibular), para indicação ou não de extração de pré-molares e na quantificação das retrações ou vestibularizações dos dentes anteriores e da distalização ou ' mesialização dos caninos e primeiros molares inferiores. Assim podemos após a análise estatística dos resultados, propor que nos casos em que a discrepância total, ou seja, a discrepância de modelo mais a discrepância cefalométrica for maior que 10mm, indicar extração de premolares
Abstract: This Research applied the Andrade diagram as an adjunct in Orthodontic diagnosis and treatment planning, in cases of Class II division of Angle malocclusion. Forty documentations of individuals were used, half of the which were treated orthodontically without indication of bicuspid extraction and the remaining 20 with indication of bicuspid extraction. The individualized diagram by cephalometric measurements and by lower arch cast measurements was superposed to the stone models. The results showed that the diagram use is relialy secure in determining the need or not of dental arches expansion (lower arch dental form). Also to indicate or not the bicuspid extractions, to quantify the anterior teeth tetraction or buccal movement and the mesial or distal movement of the canines and the first molars. In this manner, after the results of statistical analysis, it was proposed that in cases of total discrepancy, in other words, discrepancy plus cephalometric discrepancy larger them 10 mm, to indicate the bicuspid extractions
Doutorado
Ortodontia
Doutor em Odontologia
24
Chien, Yin-jung Angela. "Adjunctive orthodontic treatment of pathologically migrated incisors in adults with periodontitis." Click to view the E-thesis via HKUTO, 2004. http://sunzi.lib.hku.hk/hkuto/record/B43895451.
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Hou, Jack. "Changes in integumental dimensions of the face following orthodontic treatment." View the abstract Download the full-text PDF version, 2006. http://etd.utmem.edu/WORLD-ACCESS/hou/2006-006-hou.pdf.
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Thesis (M.S. )--University of Tennessee Health Science Center, 2006.Title from title page screen (viewed on April 24, 2008). Research advisor: Edward Harris, Ph.D.. Document formatted into pages (xi, 130 p. : ill.). Vita. Abstract. Includes bibliographical references (p. 116-130).
26
Dixon, Julian. "Prevalence of White Spot Lesions during Orthodontic Treatment." VCU Scholars Compass, 2009. http://scholarscompass.vcu.edu/etd/1843.
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The reported prevalence of decalcification in orthodontic patients varies from 2 to 96% mainly due to the lack of a standard examination technique. The aims of this study were: 1) to determine the prevalence of white spot lesions around brackets using visual examination and the DIAGNOdent; 2) to determine which teeth were the most susceptible to decalcification; and 3) to test the accuracy of the DIAGNOdent by comparing to the visual examination. The presence of white spot lesions was determined in two groups of patients who were 6 and 12 months into orthodontic treatment, respectively. The control group consisted of patients who were examined for white spot lesions immediately after having their braces placed on their teeth. The prevalence of white spot lesions was 38%, 46%, and 11% for the 6-month, 12-month, and control groups, respectively. There was a statistically significant correlation (r = 0.71) between the DIAGNOdent measurements and the visual examination.
27
Drummond, Robert John. "Orthodontic status and treatment need of 12-year-old children in South Africa an epidemiological study using the dental aesthetic index /." Thesis, Pretoria : [s.n.], 2003. http://upetd.up.ac.za/thesis/available/etd-10102003-165609.
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Prestwich, Tyler Carl. "Factors influencing the outcomes of class II camouflage treatment." Thesis, University of Iowa, 2014. https://ir.uiowa.edu/etd/4725.
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Class II malocclusion in non-growing individuals is treated in one of two ways - masking or surgery. If the dentoskeletal discrepancy is great enough, masking usually involves extraction of two maxillary premolars and subsequent incisor retraction and closure of overjet. This is the option of choice for patients without profile concerns, or who have medical or financial concerns. However, this treatment modality can sometimes result in less-than-ideal results. In the present study, we sought to understand what factors may influence the outcomes of this type of treatment. 65 subjects were included in this study. The total sample was divided into good and compromised finish categories based on objective criteria of overbite, overjet, and AP position of the maxillary canines. The good finish group was further subdivided into two groups, acceptable and excellent finishes. Several variables were measured on each subject's initial and final casts and compared between groups to determine whether any were associated with a particular finish group. At the initial time point, a mesial displacement of the maxillary right first molar by 3.35mm or less was found to correspond significantly to an excellent finish. This may indicate that if an individual presents with molars that are Class II by 3 mm or less, the prognosis is better than if that same individual had a greater Class II discrepancy. None of the other variables for the initial time point were found to be significantly different, suggesting that treatment mechanics, rather than a pre-existing occlusal factor, plays a predominant role in treatment outcome. At the final time point, we found that the maxillary arch length and tooth-size arch-length discrepancy were greater in the compromised group, indicative of excess spacing in this group at the end of treatment. Based on the other findings of this study, we attribute this result to differences in the mechanics used by individual practitioners. This hypothesis is further supported by our findings that none of the variables measuring patient compliance were found to be different between the good and compromised group. In the future, studies examining the particular mechanics used, and compliance where applicable, in this population will yield valuable insights into this area of patient research.
29
簡吟容 and Yin-jung Angela Chien. "Adjunctive orthodontic treatment of pathologically migrated incisors in adults with periodontitis." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2004. http://hub.hku.hk/bib/B43895451.
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Potts, Brittany Leigh Weaver. "Dental and skeletal outcomes for class II surgical-orthodontic treatment a comparison between experienced and novice clinicians /." Columbus, Ohio : Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1236704017.
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Burr, Frederick Jerome. "Cephalometric evaluation of one-phase and two-phase treatment alternatives in matched class II subjects." View the abstract Download the full-text PDF version, 2007. http://etd.utmem.edu/ABSTRACTS/2007-019-Burr-index.html.
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Thesis (M.S. )--University of Tennessee Health Science Center, 2007.Title from title page screen (May 16, 2008). Research advisor: Edward F. Harris, PhD. Document formatted into pages (x, 189 p. : ill.). Vita. Abstract. Includes bibliographical references (p. 110-123).
32
Miettunen, Katie Elizabeth. "Multidisciplinary assessment of orthodontic treatment outcome for the adult mutilated dentition." Master's thesis, Temple University Libraries, 2011. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/202771.
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Oral BiologyM.S.
Orthodontic treatment in the adult is not new. Until lately, the challenges of treating the adult patient kept their numbers low. Over the last thirty years, however, there has been a steady increase in the prevalence of adults seeking orthodontic treatment. Many adults present with a mutilated dentition that often require a multidisciplinary approach for optimal treatment outcomes. Currently, guidelines for the evaluation of adult orthodontic treatment outcomes do not exist. The purpose of this study was to determine which factors are considered most important for the evaluation of the quality of adult orthodontic treatment outcome of patients with a mutilated dentition by practicing orthodontists, periodontists, and restorative dentists. In this study, orthodontists, periodontists, and restorative dentists examined the records of ten adult patients in the mutilated dentition who received orthodontic treatment at Temple University in the Department of Orthodontics. This study was approached from both a quantitative and qualitative perspective. Two surveys were used to collect the data. One survey used a visual analogue scale to measure the overall result, occlusion, buccal bone height, periodontal health, restorability, case difficulty, and the amount of influence of the American Board of Orthodontics (ABO) standards when judging the cases. A second survey was used to determine if the examiner was ABO certified and asked a series of open-ended questions related to orthodontic treatment outcome. Based on the data collected, the following conclusions were drawn: 1. Orthodontists, periodontists, and restorative dentists are consistent in their rating of orthodontic treatment outcome. 2. Periodontists and restorative dentists rate overall case finish and posttreatment occlusion higher than orthodontists. 3. When evaluating case finish, orthodontists tend to blend what is optimal as described by the guidelines of the American Board of Orthodontics with what is reasonably achievable for the patient. 4. Orthodontists, periodontists, and restorative dentists rate the following five factors to be most important when evaluating orthodontic treatment outcome: esthetics, occlusion, restorability, periodontal health, and stability. 5. Orthodontists, periodontists, and restorative dentists rate esthetics as the most important factor to use for evaluating orthodontic treatment outcome. The data suggest that adult patients with mutilated dentitions can pursue orthodontic treatment and achieve an excellent result. Teamwork among all dental specialists providing treatment is essential for multidisciplinary treatment. Treatment goals among all providers must be aligned to reach the ultimate treatment goals.
Temple University--Theses
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Kasbergen, Geraldo Francisco. "Efeito do tratamento térmico nos fios ortodônticos de aço inoxidável /." Araçatuba : [s.n.], 2007. http://hdl.handle.net/11449/95801.
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Resumo: O objetivo deste trabalho foi avaliar o efeito do tratamento térmico (ou revenido) nos fios ortodônticos de aço inoxidável de Cromo Níquel (CrNi). Foram utilizados 40 arcos das espessuras 0.014"(0,35mm), 0.016"(0,40mm), 0.018"(0,45mm) e 0.020"(0,50mm). Os arcos foram divididos nos grupos sem e com tratamento térmico e, posteriormente, mensurados nas regiões anterior e posterior por meio do "software" AutoCad 2000 antes e após os ensaios mecânicos de compressão e tração por meio da máquina de ensaio universal EMIC. Os resultados foram submetidos à análise estatística com teste de multivariância ANOVA em nível de 5% (p<0,05). Diante da metodologia utilizada neste estudo, pode-se concluir que os arcos ortodônticos tratados termicamente apresentam suaves modificações transversais na região anterior e maiores aumentos transversais na região posterior, porém, provavelmente, sem relevância clínica. Os arcos sem e com tratamento térmico submetidos à força de compressão não apresentaram alterações transversais significantes nas regiões anterior e posterior. Nos arcos sem tratamento térmico submetidos à força de tração ocorreram aberturas mais acentuadas na região anterior nos arcos 0.020". Na região posterior, a abertura proporcionada pela tração ocorreu com maior intensidade nos arcos sem tratamento térmico. Os arcos com tratamento térmico submetidos à força de tração não alteraram a distância transversal na região anterior. Nos arcos tratados termicamente constatou-se uma maior estabiidade, principalmente quando submetidos à tração ou à abertura.Abstract: The aim of this study was to evaluate the effect of heat treatment in orthodontic wires of Chrome Nickel (CrNi) stainless steel. 40 arches of 0.014" (0,35 mm), 0.016" (0.40 mm), 0.018 "(0.45 mm) and 0.020" (0.50 mm) were used. The arches were divided 2 groups: with and without heat treatment and then measured in anterior and posterior regions using AutoCad 2000 software before and after tension and compression tests, using universal testing machine EMIC. The results were submitted to ANOVA multivariance test for statistical analysis with level of 5% (p<0.05). Through the methodology used in this study it can be concluded that the orthodontic arches with heat treatment presented soft transversal changes in the anterior region and larger transversal increases in the posterior region, probably without clinical relevance. The arches with and without heat treatment submited to compression force did not show significant transversal changes in the anterior and posterior regions. The arches 0.020" without heat treatment submited to traction force presented the largest increases in width in the anterior region. Traction force at posterior region led to arch openning with greater intensity in arches without heat treatment. The arches with heat treatment submited to traction force didn't change the transversal distance in the anterior region. It was found that arches with heat treatment had greater stability, especially when submitted to traction or opening forces.
Orientador: Osmar Aparecido Cuoghi
Coorientador: Paulo Henrique dos Santos
Banca: Adilson Luiz Ramos
Banca: Marcos Rogério de Mendonça
Mestre
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Rossouw, Paul Emile. "A longitudinal study of the stability of the dentition following orthodontic treatment." Thesis, Stellenbosch : Stellenbosch University, 1992. http://hdl.handle.net/10019.1/70107.
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Thesis (PhD) -- Stellenbosch University , 1992.ENGLISH ABSTRACT: The maintenance of dental alignment following orthodontic treatment has been, and continues to be, a challenge for the orthodontist (McReynolds and Little, 1991). Orthodontists should endeavour to establish normal occlusions and function to the end that physiologic balance and retentive stability may be achieved (Goldstein, 1953). Many philosophies and theories have been formulated in response to this challenge, but few have successfully withstood the test of rigorous post-orthodontic evaluation. The present study comprises longitudinal assessments of dentofacial changes which occurred in South African Caucasian subjects during their orthodontic treatment as well as a mean of 7 years following active treatnent. The sample consists of 88 Caucasian subjects; 33 males and 55 female sUbjects who have undergone conventional edgewise orthodontic treatment (Lindquist; 1985). The treatment includes extraction (56%) and nonextraction (44%) therapy. Due to the intricate structure of the craniofacial complex, it is deemed important to discuss the major components of this complex separately and then to compare the variables describing the area with post-orthodontic lower incisor crowding. Lower incisor crowding or irregularity, most often referred to as relapse when occurring in the post-orthodontic dentition, is a phenom~non that is clinically visible and easily assessed using the Little Irregularity Index (Little, 1975). A variety of orthodontic study cast and cephalometric variables represent the changes which occur at the three time intervals selected for this study, namely pre-treatment (T1), post-treatment (T2) and following active treatment (T3). statistical analysis of th~ data was undertaken by the Institute for Biostatistics of the Medical Research Council, Tygerberg, RSA utilising the SAS (1985). The significance level of the results of this study is set at p = 0.05. x No previous study has documented the evaluated and described the various craniofacial skeleton in this format. literature parts or has of the The thesis is divided into thirteen chapters.
AFRIKAANSE OPSOMMING: Die instandhouding van tandbelyning na voltooiing van ortodontiese behandeling was en sal nag steeds in die toekoms 'n uitdaging bied vir ortodontiste (McReynolds en Little, 1991). Die ortodontis se strewe moet wees am 'n normale okkli'lsie in die ortodontiese pasient te veE)tig, waartydens die funksie van die kake herstel word, asook fisiologiese harmonie en stabiliteit van die okklusie gevestig ~lOrd (Goldstein, 1953) • Menige filosofiee en teoriee is al voorgestel om hierdie doelwitte te kan bereik, maar baie min het nag daarin geslaag. Tydens die huidige longitudinale studie is gepoog om In ondersoek te doen van die veranderinge wat plaasvind in die dentofasiale omgewing van agt-en-tagtig Suid-Afrikaanse Kaukasiese pasiente tydens hulle ortodontiese behandeling, asook na die verloop van 'n gemiddeld van sewe jaar sedert die behandeling voltooi was. Die monster het uit 33 manlike en 55 vroulike pasiente bestaan wat met 'n konvensionele vierkantsdraad ("edg~wise") ortodontiese tegniek behandel was (Lindquist, 1985). Die behandeling het 56% ekstraksie en 44% ni~-ekstraksie behandelingsbeplannings ingesluit. Weens die baie komplekse kraniofasiale omgewing is dit besluit am elke deel waaruit hierdie omgewing bestaan, afsonderlik te beskryf en te bespreek. Die veranderlikes wat elke deel beskryf is vervolgens gekorreleer met die na-behandelings ondersnytand-bondeling. Ondersnytandbondeling is 'n verskynsel wat klinies sigbaar is en meestal na verwys word as terugval indien dit voorkom in die na-behandelings resultaat. Dit kan maklik gemeet word met behulp van die "Little Irregularity Index" (Little, 1975). 'n Verskeidenheid van ortodontiese studiemodelle en kefalometrie~Je verander.likes is tydens die voor-behandelings (T1), na-behandelings (T2) asook na verloop van 'n gemidd.eld van sewe jaar na afhandeling van die behandeling (T3) gemeet. Die statistiese verwerkinge is deuI' die Institu,ut vir Biostatistiek van die Mediese Navorsingsraad, Tygerberg, R.S.A. gedoen deur middel van die SAS (1985). Die betekenisvolheidsperk van die studie is op P = 0.05 gestel. Geen studie het al voorheen die literatuur gedefineerde areas van die kranio-fasiale skelet formaat ondersoek of be~kryf nie. Die proefskrif bestaan uit dertien hoofstukke.
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Howarth, Tim, James Chen, and Heesoo Oh. "PREVALENCE OF SHORT ROOT ANOMALY IN PATIENTS SEEKING ORTHODONTIC TREATMENT." Scholarly Commons, 2020. https://scholarlycommons.pacific.edu/dugoni_etd/9.
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Introduction: The purpose of this study was to investigate variance in prevalence and severity of short root anomaly (SRA) in patients seeking orthodontic treatment, stratified by ethnicity and sex. Materials and Methods: In this retrospective cross-sectional study, we evaluated 896 patients who had initial cone-beam computed tomographies (CBCTs) taken from July 1, 2014 to May 30, 2019. Panoramic radiographs and images from the CBCTs of each patient were extracted and placed in a database. The crown-to-root ratio of maxillary central incisors, lateral incisors, canines, and all pre-molars were evaluated to determine the presence, severity and associations of SRA. A Chi-square test and ordered logistic regression were used. Results: SRA was seen in 10.04% of the sample (90 patients). The maxillary central incisors are the most frequently and bilaterally affected. The severity of SRA among those with SRA showed statistically significant differences between the ethnic groups. Associations been SRA and Hispanic patients were found to be significant when evaluated by ordered logistic regression (P
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Karlsson, Ingela. "Distal movement of maxillary molars. Studies of efficiency and timing of treatment." Licentiate thesis, Malmö högskola, Odontologiska fakulteten (OD), 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-7764.
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Den vanligaste bettavvikelsen som behandlas bland barn och ungdomar är trångställning. När funktionellt och estetiskt störande trångställning i överkäken ska behandlas kan man vanligtvis ta bort tänder eller flytta de första stora kindtänderna (sexårständerna) bakåt för att sedan göra tandraden jämn. Det finns flera vetenskapliga studier som beskriver behandlingseffekterna av olika tandställningar för att flytta de stora kindtänderna bakåt. Det är oklart vilken typ av tandställning som är effektivast och i allmänhet saknas ett evidensbaserat perspektiv. Det är också oklart vid vilken tidpunkt som det är mest effektivt att flytta sexårständerna bakåt, dvs. före eller efter det att de andra stora kindtänderna kommit på plats i tandbågen. Licentiatavhandlingen är baserad på följande studier: Med randomiserad kontrollerad studiedesign var syftet i Studie I att utvärdera behandlingseffekterna av två olika tandställningar för att flytta överkäkens sexårständer bakåt i tandbågen. Fyrtio patienter randomiserades, 20 till en avtagbar tandställning (extraoralt drag) och 20 patienter till en fast tandställning. Studie II hade syftet att analysera när behandlingen var effektivast, dvs. att tandreglera sexårstanden bakåt innan eller efter att den bakomvarande stora kindtanden kommit på plats i tandbågen. I ramberättelsen utfördes dessutom en systematisk litteraturöversikt med syfte att på ett evidensbaserat sätt utvärdera olika metoders effektivitet i att tandreglera de stora kindtänderna bakåt i tandbågen och att göra en kvalitetsbedömning av de utvalda studierna. Översikten omfattade tidsperioden från januari 1966 t o m april 2008 vilket innebar att bedömningen även inkluderade studierna I och II. Konklusioner: • Fast tandställning var effektivare än avtagbar för att flytta de första stora kindtänderna bakåt i tandbågen. • Sidoeffekter i form av 1-2 mm ökat överbett (förankringsförlust) uppstod vid behandling med fast tandställning medan avtagbar tandställning bidrog till minskat överbett. • Det var mest effektivt att tandreglera sexårstanden bakåt innan den bakomvarande stora kindtanden kommit på plats i tandbågen. • I litteraturen fanns det begränsat bevisvärde för att fast tandställning är mer effektiv än avtagbar för bakåtförflyttning av första stora kindtanden i överkäken och att sidoeffekter (1-2 mm ökat överbett) blir följden av den fastsittande apparaturen. • Det är fortfarande svårt att via litteraturen dra några slutsatser om vilken typ av fast tandställning som är mest effektiv och därför behövs det ännu mer forskning om detta.Maxillary molar distalization is a frequently used treatment method in cases with crowding associated with dental Class II molar relationship or Class I skeletal relationship. Despite the fact that several studies have been published concerning the treatment outcome of different appliances for distal movement of maxillary molars, it is still difficult to interpret the results and evidence presented in these studies because a variety of study designs, sample sizes and research approaches exists. In view of this, well-designed randomized clinical trials comparing patient compliant and non patient compliant extra- and intraoral appliance as methods of distalizing maxillary first molars is desirable as well as a systematic review of the present knowledge. Furthermore, there is a need for further evaluations and knowledge about the most appropriate time to move maxillary molars distally, i.e. evaluation of movement efficiency including anchorage loss before and after eruption of second maxillary molars. The overall aim of this thesis was to evaluate the outcome measures by distalizing maxillary molars with either the conventional extraoral traction (EOA) or a intraoral fixed appliance (IOA) and also to evaluate the optimal timing of distalizing treatment – either before or after the eruption of the second maxillary molars. This thesis was based on two studies and a systematic review included in the frame story: Paper I was a randomized controlled trial involving 40 patients in orthodontic treatment. The study evaluated and compared the treatment effects of an EOA and an IOA for distal molar movement of maxillary first molars. Paper II was a retrospective study involving 40 patients evaluating the maxillary molar distalization and anchorage loss in two groups, one before (MD 1 group) and one after eruption of second maxillary molars (MD 2 group). The systematic literature search was made in 4 different databases to determine what appliances for distal molar movement of maxillary molars have been evaluated in an evidence based manner and with focus on the most efficient method and outcome of molar movement and anchorage loss. Also, the evidence-based standard of Paper I and II was evaluated. These conclusions were drawn: • The IOA was more effective than the EOA to create distal movement of maxillary first molars, and thus, for the clinician the IOA is the most favourable method. • Moderate and acceptable anchorage loss was produced with the IOA implying increased overjet whereas the EOA created decreased overjet. • The two appliances did not have any considerable corrective effect on Class II skeletal relationships and these appliances shall therefore only be used in cases of moderate dental sagittal discrepancies and arch-length deficiencies. • The most opportune time to move maxillary first molars distally is before eruption of the second molars, since molar movement is then most effective and the anchorage loss lesser. • There is limited level of evidence that intraoral appliance is more efficient than extraoral to create distal movement of maxillary molars and that anchorage loss was produced with the intraoral appliance. • It is still difficult to draw any conclusions as to which of the intraoral appliances that were the most effective, and therefore, more RCTs are desireable.
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Shipley, Thomas S. "The effect of argon laser irradiation on reducing enamel decalcification during orthodontic treatment an in vitro and in vivo study /." Morgantown, W. Va. : [West Virginia University Libraries], 2005. https://etd.wvu.edu/etd/controller.jsp?moduleName=documentdata&jsp%5FetdId=3883.
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Thesis (M.S.)--West Virginia University, 2005.Title from document title page. Document formatted into pages; contains x, 243 p. : ill. (some col.). Vita. Includes abstract. Includes bibliographical references (p. 128-139).
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Haider, Zane Karrer. "AN EPIDEMIOLOGIC SURVEY OF EARLY ORTHODONTIC TREATMENT NEED IN PHILADELPHIA PEDIATRIC DENTAL PATIENTS USING THE INDEX FOR PREVENTIVE AND INTERCEPTIVE ORTHODONTIC NEEDS (IPION)." Master's thesis, Temple University Libraries, 2013. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/229832.
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Oral BiologyM.S.
Abstract Introduction: Early Orthodontic Treatment (EOT) has been extensively studied, but questions still remain regarding the prevalence of its need in the United States. Without information regarding the epidemiology of EOT need, it is difficult to make determinations as to its viability as a Medicaid service. The Index for Preventive and Interceptive Orthodontic Needs (IPION) developed by Coetzee is the only index specifically meant for children in the mixed dentition. The purpose of this study was to utilize the IPION to measure EOT need in two pediatric dental populations in Philadelphia. Methods: 87 children between the ages of 6 and 9 were screened using the IPION. Overall scores, demographic information, and prevalence of specific malocclusions were recorded and analyzed. Results: A substantial proportion of children fell into the definite treatment need category (60.92% ±5.2% when including restorations and caries in the score, 31.03%±5.0% when excluding restorations and caries from the score). Site of screenings, race and sex had no significant effects on prevalence of EOT need, while IPION rubric used (IPION6 versus IPION9) had marginally significant effects on the prevalence of EOT need. Conclusions: There is a significant proportion of children in Philadelphia pediatric dental populations who have unmet EOT needs. Patients, communities, Medicaid, orthodontists and residents could all benefit from treatment of these children if policy were changed to allow EOT to be covered by Medicaid in Pennsylvania.
Temple University--Theses
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Palmer, Michelle. "Variables affecting treatment outcomes in a 30-month post-graduate orthodontic residency." Thesis, NSUWorks, 2012. https://nsuworks.nova.edu/hpd_cdm_stuetd/51.
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A thesis submitted to the College of Dental Medicine of Nova Southeastern University of the degree of Master of Science in Dentistry.
Objectives: The purpose of this study was to evaluate clinical outcomes based on the American Board of Orthodontics Objective Grading System (ABO-OGS) in a 30-month postgraduate orthodontic residency and to determine what factors affected these treatment outcomes. Methods: Consecutively debonded cases from July 1, 2010 to June 30, 2011 treated by residents in the Orthodontics Department at Nova Southeastern University were graded using the ABO-OGS. The age and sex of the patient, the treatment time, the missed appointments and the number of providers were documented. Discrepancy indices were calculated for each patient. These variables were assessed and their associations with the obtained treatment outcome scores were evaluated. Results: The average OGS score of the debonded cases was 33.87. There was no significant correlation between total OGS score and the demographic or explanatory variables. There were significant correlations found between the discrepancy index (DI) and the treatment time, the number of providers, but not the OGS. Significant correlations were also identified between treatment time and the number of failed appointments and the number of providers. Extraction cases were shown to have a significantly longer treatment time. Out of the eight objective measurements of the OGS, occlusal contacts, marginal ridges, buccolingual inclination and alignment/rotations scored the highest points in our evaluation with an average of 7.81, 6.37, 5.04, and 5.01 respectively. Conclusions: This study indicated the Nova Southeastern University Orthodontic Department average OGS score is about 6 points higher than the ABO clinical exam passing score. The initial complexity of a case was not a pre-determined factor for the final treatment results. This study identified several aspects of treatment outcomes that need improvement including, occlusal contacts, marginal ridges, correcting buccolingual inclination and improving the alignment.
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Levin, Andrew, and James Chen. "PREDICTION OF CLASS III TREATMENT NEED AND SUCCESS." Scholarly Commons, 2020. https://scholarlycommons.pacific.edu/dugoni_etd/5.
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Objective: The purpose of the present study is to develop prognostic models for surgical need and treatment success for class III malocclusions. Material and Methods: This is a retrospective cohort study that evaluated treatment outcomes of consecutively treated patients at UCSF from Jan 1st 2007-Jan 1st 2012 and UoP from May 1st, 2014 – May 1st 2019. Receiver operator curves were used to develop prognostic models for surgical need and treatment success for class III malocclusions. Predictor variables were selected a priori (Class III-WITS, U1-PP, IMPA). The prognostic models were validated first using a UCSF validation cohort to show consistency with in one program, and then using consecutively treated patients at UoP from May 1st, 2014 – May 1st 2019 as a second validation group as an outside program. Results: Derivation model for surgical need of class III malocclusion showed high sensitivity (81.8%); high specificity (94.3%), high positive predictive value (81.8%), high negative predictive value (94.3%), and the model correctly classified 91.3% of the subjects. UCSF validation model for surgical need of class III malocclusion showed moderate sensitivity (63.6%), high specificity (91.4%), high positive predictive value (70.0%), high negative predictive value (88.9%), and the model correctly classified 84.8% of the subjects. UoP validation model for surgical need of class III malocclusion showed moderate sensitivity (46.7%), high specificity (97.4%), high positive predictive value (77.8%), high negative predictive value (90.4%), and the model correctly classified 89.1% of the subjects. Derivation model for treatment success of Class III malocclusions showed moderate sensitivity (46.7%); high specificity (85.2%), moderate positive predictive value (63.6%), high negative predictive value (74.2%), and the model correctly classified 71.4% of the subjects. UCSF validation model for treatment success of Class III malocclusions showed low sensitivity (35.0%), moderate specificity (69.6%), moderate positive predictive value (50.0%), moderate negative predictive value (55.2%), and the model correctly classified 53.5% of the subjects. UoP validation model for treatment success of Class III malocclusions showed low sensitivity (16.1%), high specificity (87.5%), moderate positive predictive value (41.7%), moderate negative predictive value (65.3%), and the model correctly classified 62.1% of the subjects. Conclusion: WITS, U1-PP and IMPA were significant predictors of orthognathic surgical need in the derivation group, but only WITS predicted surgical need in the validation groups of Class III Malocclusions. Regarding treatment success, in the derivation group, only U1-PP was significantly associated with treatment success, while no variables were significantly associated with treatment success in the validation groups. Overall, the prognostic models developed in this study are more robust regarding predictions of Class III surgical need, as opposed to treatment success as defined by the ABO Cast and Radiograph examination.
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Fors, Ronny. "Nickel allergy in a Swedish adolescent population and its relation to orthodontic treatment and lifestyle factors." Doctoral thesis, Umeå universitet, Odontologi, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-1639.
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Nickel stands out as the main cause of contact allergy in both children and adults, which has given rise to concern and the introduction of regulations by official bodies. Today´s youths are frequently exposed to body piercing and orthodontic treatment. Changes in youth lifestyle practices are also likely to influence nickel exposure and thus, the occurrence of nickel allergy. However, against patient and parental concern regarding nickel exposure to orthodontic appliances, often evoked by allergies following piercing, stand results from studies indicating that early orthodontic appliance treatment may reduce, rather than increase, prevalence of nickel allergy; a finding that has been suggested to result from tolerance induction by early exposure to nickel via the oral route. The objective of the present thesis was to investigate the association between nickel allergy and exposure to different orthodontic appliances and lifestyle, in particular piercing, as well as to study nickel release from orthodontic appliances into the oral cavity. Furthermore, one objective was to establish baseline prevalence data of nickel allergy in a Swedish adolescent population. Data was generated from a cross-sectional survey, in which about 6000 youths completed a questionnaire and almost 4500 of these were patch-tested for contact allergy. Information on exposure to orthodontic appliances was verified by dental records, whilst nickel content in saliva and dental biofilm was measured in a clinical study. Questionnaire data demonstrated a reduced risk of nickel allergy when orthodontic treatment preceded piercing (OR 0.5; 95 % CI 0.3-0.8) and similar results were found for data verified from dental records, however statistical significance was lost when adjusting for background factors (OR 0.6, 95 % CI 0.4-1.0). Exposure to full fixed appliances with NiTi-containing alloys, as well as a pooled ‘high nickel-releasing’ appliance group prior to piercing correlated with a significantly reduced risk of nickel allergy and a trend towards a reduced risk with exposure duration. Nickel could also be found in significantly higher concentrations from dental plaque samples, but not saliva samples, in orthodontic patients who were well into treatment compared to patients who had not been exposed to orthodontic appliances. The effect was not found to be due to differences in estimated dietary nickel intake between the two groups. Significantly more girls than boys (13.3 % versus 2.5 %) were found to be patch-test positive to nickel. Positive nickel tests were also most prevalent in occupational programmes and least prevalent in natural science programmes, indicating differences in lifestyle and exposure to nickel. Dropout from testing was handled using a missing-value analysis. This internal validation showed that our results overestimated the occurrence of nickel allergy to a minor degree. More girls than boys reported piercing, vegetarian/vegan diet, and smoking practices, whereas an interesting shift in tattooing prevalence was observed with a larger proportion of girls reporting this practice compared to boys. Sex, number of piercings, smoking and orthodontic appliance treatment prior to piercing were found to influence weighted risk estimates of nickel allergy. To conclude, although orthodontic patients are exposed to nickel intraorally, we found no increased risk of sensitising adolescents to nickel by the use of oral orthodontic appliances. On the contrary, early orthodontic treatment preceding piercing reduced the risk of nickel allergy by a factor of 1.5-2.0. This reduced risk appears to be associated with estimated nickel release of the appliance and duration of treatment, in all supporting a hypothesised induction of immunological tolerance via oral administration of nickel. Our study also showed a strong association between lifestyle and nickel allergy. Although there have been changes in lifestyle over time, as indicated by the strong shift in tattooing practices, no large change in nickel allergy prevalence was found compared with previous Swedish data. Our data will serve as a baseline for future studies of the effect of nickel exposure regulations, such as the Nickel Directive, and for studies of lifestyle changes and their effects on nickel allergy.
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Sawrie, Daniel C. "Cephalometric evaluation of bionator therapy in the early treatment of class II malocclusions." View the abstract Download the full-text PDF version, 2008. http://etd.utmem.edu/ABSTRACTS/2008-002-Sawrie-index.html.
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Thesis (M.S. )--University of Tennessee Health Science Center, 2008.Title from title page screen (viewed on July 25, 2008). Research advisor: Edward Harris, Ph.D. Document formatted into pages (xvi, 294 p. : ill.). Vita. Abstract. Includes bibliographical references (p. 169.182).
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Mirman, Jennifer Lauren. "AN ASSESSMENT OF CURRENT CLINICAL ORTHODONTICS: CLINICIAN KNOWLEDGE, IDENTIFICATION AND TREATMENT PLANNING OF RESTRICTED AIRWAY." Master's thesis, Temple University Libraries, 2019. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/580484.
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Oral BiologyM.S.
Objectives: The naso- and oropharyngeal airways are influenced by a myriad of factors: jaw shape and position, tongue shape and position, lymphoid tissue, sleep apnea, chronic mouth breathing, and swallowing patterns. It is unknown if the relationships of these factors are recognized and routinely assessed in clinical orthodontics. This cross-sectional study sought to determine the proportion of participating orthodontists whom: 1) Are knowledgeable about airway restriction and its etiology, 2) Learned about these topics in post-graduate orthodontic education, 3) Consider airway restrictions in orthodontic treatment planning. Methods: A survey was administered through an online survey management platform, and sent to the email listings of 2,084 active American Association of Orthodontists (AAO) members. Survey questions are evidence-based and developed from findings in current literature. The questionnaire results were analyzed by coding and cleaning data through SAS 9.3 software. Univariate and bivariate analyses were performed to assess responses. Results: The survey received responses from 117 orthodontists. Most received their orthodontic certification from a two-year program (71.82%). The majority were knowledgeable about tongue adaptations, swallowing mechanisms, mouth breathing, and sleep apnea. Respondents were less confident about the relationship airway patency has with lymphoid tissue and with jaw position. Only half (50.51%) were taught about restricted naso- and oropharyngeal airway in post-graduate orthodontic education. A low majority, 66.32%, reported that they refer for medical consultation to the appropriate clinician before they begin treatment if a patient presents with restricted airway. Conclusions: Although the majority of respondents are knowledgeable about factors that influence airway patency, the survey identified areas in which understanding of and education in certain topics (lymphoid tissue, jaw position) may be lacking. Further emphasis should be placed on these topics to improve patient care. Orthodontics nationwide would benefit from more thorough post graduate orthodontic residency curriculum and general guidelines for clinical management of patients that present with airway obstruction.
Temple University--Theses
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Fowler, Chad Eric. "Relationship between Facial Attractiveness and Occlusal Treatment Outcomes: A Retrospective Study." VCU Scholars Compass, 2007. http://scholarscompass.vcu.edu/etd/1320.
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The goal of this study was to determine if a relationship exists between pretreatment facial attractiveness and posttreatment occlusal outcome in orthodontic patients. A randomized sample of forty-seven patients (26 males, 21 females) was selected for inclusion in this study. Orthodontic evaluators rated pretreatment patient photographs (frontal smile, frontal, profile) using a 100 mm visual analog scale (VAS). Occlusal outomes were evaluated using percentage reduction in weighted Peer Assessment Rating (PAR) index scores and the American Board of Orthodontics objective grading system (ABO-OGS). Spearman correlation coefficients were calculated to assess the relationship between pretreatment VAS attractiveness ratings and posttreatment occlusal scores. There was a fair correlation between facial attractiveness and reduction in weighted PAR index scores for all patients (r=.41, p<.01) and for male patients (r=.48, p<.05). The results showed a good correlation between facial attractiveness and the ABO-OGS for females (r=-.55, p<.05).
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Starö, Rebecca, and Cornelia Svensson. "Rutiner kring munhygien vid behandling med fast apparatur : En enkätstudie bland tandvårdspersonal på ortodontikliniker." Thesis, Hälsohögskolan, Högskolan i Jönköping, HHJ. Oral hälsa, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-26942.
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Bakgrund: Ortodontisk behandling utförs vanligtvis på ungdomar och kan innebära en risk för den orala hälsan. Studier har visat att patienter med fast apparatur löper större risk att utveckla svullen gingiva och karies. Syfte: Syftet med studien är att undersöka tandvårdspersonalens rutiner kring munhygien hos patienter med fast apparatur på ortodontikliniker. Metod: Studien är en kvantitativ tvärsnittsstudie i form av en enkät med 11 frågor. Enkäten skickades till fyra ortodontikliniker i fyra olika län i södra Sverige. Enkäten innehöll frågor gällande munhygien-rutiner och tandhygienistprofessionen. Sammanlagt 59 personer tillfrågades delta i studien. Resultat: Enkäten besvarades av 38 personer. Resultatet visade att majoriteten av deltagarna in-struerade munhygieninstruktion vid insättning av fast apparatur och vid uppvisad dålig munhy-gien. Samtliga deltagare instruerade munhygien på patienten och större delen gav även samtal och uppföljning. Gällande tandhygienistprofessionen har majoriteten av klinikerna inte någon tandhygienist anställd. Av samtliga deltagare ansåg 29% (n=11) att det skulle vara bra att ha en tandhygienist anställd på ortodontikliniker och 45% (n=17) såg behov av kontakt. Slutsats: Det fanns inte några större skillnader mellan professionerna och klinikerna gällande munhygienru-tiner och hur de utförs. Nästan hälften av deltagarna såg behov av kontakt med tandhygienist vid insättning av fast apparatur och vid munhygieninstruktion.Background: Orthodontic treatment is usually performed on adolescents and increase risks for the oral health. Studies have shown that patients with fixed appliances more likely develop gingival enlargement and caries. Aim: The aim of this study was to investigate the dental pro-fessional’s routines including oral hygiene in patients with fixed appliances on orthodontic clin-ics. Method: The study was a quantitative cross-sectional study with questionnaire regarding 11 questions. The questionnaire was sent to four orthodontic clinics in four counties in southern Sweden and contained questions regarding oral hygiene routines and dental hygienists. Alto-gether 59 individuals were asked to participate. Results: The questionnaire was answered by 38 individuals. The result showed that the majority gave oral hygiene instructions at insertion of fixed appliances and when oral hygiene was poor. All participants practice oral hygiene in-structions on patients and almost everyone had conversations and follow-up visits. The majority of clinics didn´t have dental hygienists employed. Of all participants 29% (n=11) thought it would be good to have dental hygienists employed and 45% (n=17) saw need of contact. Conclusion: No major differences between professions and clinics were shown regarding oral hy-giene routines and performance. Almost half of the participants saw need of contact with dental hygienists.
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Trockel, Christopher. "Assessment of the role that second molars play in bite-opening during orthodontic treatment in adolescents : a retrospective, cephalometric study." Thesis, NSUWorks, 2013. https://nsuworks.nova.edu/hpd_cdm_stuetd/46.
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A thesis submitted to the College of Dental Medicine of Nova Southeastern University of the degree of Master of Science in Dentistry.
Abstract ASSESSMENT OF THE ROLE THAT SECOND MOLARS PLAY IN BITE-OPENING DURING ORTHODONTIC TREATMENT IN ADOLESCENTS: A RETROSPECTIVE, CEPHALOMETRIC STUDY DEGREE DATE: DECEMBER 6, 2013 Christopher B. Trockel, D.D.S. COLLEGE OF DENTAL MEDICINE NOVA SOUTHEASTERN UNIVERSITY Thesis Directed By: Shiva Khatami D.D.S., Ph.D, Committee Chair Mark Hall, D.D.S., Committee Member Abraham Lifshitz, Committee Member Objectives: This study aimed to investigate the role that second molars play in increasing the facial vertical dimension by comparing vertical changes experienced in growing patients, who had their second molars incorporated into the orthodontic appliance, with those that did not. The study investigated associations between the vertical changes experienced through treatment and the initial vertical classification of the patients (normo-, hypo-, and hyperdivergent). Background: Many studies have investigated the changes in the vertical dimensions that occur in orthodontic treatment. It has been shown that almost all orthodontic appliances produce extrusion whether desired or not. In theory, this extrusion may lead to an increase of the skeletal vertical dimension. Conventional wisdom says that second molars play a significant role in vertical control during treatment. Therefore, some practitioners advocate viii incorporating the second molars as soon as possible in treatment to help open the bite. It is also thought that it may be wise to not incorporate the second molars during treatment at all in cases with an open bite tendency. Methods: Eighty de-identified pre-treatment cephalometric radiographs (40 with second molars bonded and 40 without second molars bonded) from growing patients treated at the orthodontic clinic at Nova Southeastern University were analyzed and compared to their post-treatment analogs. Twelve linear and angular measurements were made (overbite, maxillary molar to palatal plane, mandibular molar to mandibular plane, upper anterior dentoalveolar height, lower anterior dentoalveolar height, upper anterior facial height, lower anterior facial height, total posterior facial height, lower posterior facial height, UAFH/LAFH ratio, mandibular plane angle, and Y-axis). Results: The results indicated that the vertical dimension was not significantly altered based solely on whether or not the second molars were incorporated into the orthodontic appliance. Changes experienced by both groups (bonded and non bonded) and all three subgroups (hypo-, normo-, and hyperdivergent) were consistent with what would be expected for growth alone. Conclusion: Bonding second molars in a growing population during orthodontic treatment does not significantly affect the vertical dimension, regardless of the patient's initial skeletal vertical classification.
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Zhang, Man. "Changes in children's oral health related quality of life following orthodontic treatment." Click to view the E-thesis via HKUTO, 2007. http://sunzi.lib.hku.hk/hkuto/record/B38938546.
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Mountain, Keith John. "Temporomandibular joint dysfunction syndrome : relationship of fixed appliance orthodontic treatment as a possible aetiological factor." University of Sydney, 1988. http://hdl.handle.net/2123/4724.
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Master of Dental SurgeryThis work was digitised and made available on open access by the University of Sydney, Faculty of Dentistry and Sydney eScholarship . It may only be used for the purposes of research and study. Where possible, the Faculty will try to notify the author of this work. If you have any inquiries or issues regarding this work being made available please contact the Sydney eScholarship Repository Coordinator - ses@library.usyd.edu.au
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Lancaster, Lydia Anne. "Longitudinal Effects of Surgical Orthodontics Treatment on Quality of Life in a United States Population." The Ohio State University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1553856528855052.
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Edwards, Daenya T. "The Effect of Media Advertising on Consumer Perception of Orthodontic Treatment Quality." VCU Scholars Compass, 2006. http://scholarscompass.vcu.edu/etd/853.
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A survey instrument was designed to evaluate factors influencing consumer selection of an orthodontist and consumer perception of different forms of media advertising (radio, television, newspaper, magazine, direct mail, and billboard) by orthodontic practices. The surveys were distributed by 8 orthodontic offices in and around the Richmond, Virginia area. Out of 676 surveys, 655 (97%) were returned. Respondents most often cited dentist and patient referrals as how they learned of the orthodontic practices they visited (50%- 57%). However, a caring attitude and good practitioner reputation were cited as the top reasons influencing selection of an orthodontist (53% and 49% respectively). Fourteen percent to 24% of respondents felt that advertising orthodontists would offer a lower quality of care than non-advertising orthodontists. Newspaper, magazine, and direct mail advertisements were viewed more favorably than radio, television and billboard advertisements. Chi-square analyses revealed few statistically significant differences in perception between different income and education groups.