Academic literature on the topic 'Dentist indication'

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Journal articles on the topic "Dentist indication"

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Qazi, Nadia, and Syed Nasir Shah. "Knowledge, Attitude and Practice of Dentists Regarding Cross Infection in Dental Teaching Hospitals of Peshawar." Journal of Gandhara Medical and Dental Science 2, no. 2 (2016): 3–8. http://dx.doi.org/10.37762/jgmds.2-2.49.

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OBJECTIVES:The objective of the current study was to assess knowledge, attitude and practices of dentist regarding cross infection in Khyber College of Dentistry (KCD) and Sardar Begum Dental College (SBDC) Peshawar.MATERIALS AND METHODS:This descriptive cross sectional study was conducted at two tertiary care hospitals having sample size 214 with 94 males and 121 females. A pilot study was conducted at Hayatabad Medical Complex to assess the reliability of questionnaire. Self administered anonymous questionnaire was administered to 214 dentists. The dentist in each health care facility was observed for their knowledge, attitude and practice regarding cross infection.RESULTS:Knowledge of dentist’s was optimum but they were lacking sufficient knowledge in areas of sterilization and cross infection due to waste material present in pipes of dental units. Significant numbers of them 28.8% were not agreed with the role of wearing rings in cross infection during dental procedure. Although lack of hand washing and impression was considered as a source of cross infection and 33.9% reported poor attitude regarding hand washing, 39.9% were not regarding the hygiene of nails in cross infection control. Similarly only 59% of them have shown positive attitude towards the vaccination of dental professionals. Although the knowledge and attitude was seen acceptable but their practices regarding the infection control were lacking in area of use of N95 respirator, taking off jewelry during dental surgeries, use of filtered water, use of anti-retraction valve, use of rubber dam for aerosols, use of separate box for sharp disposal and use of disinfectants in dental units..CONCLUSION:From current study it was concluded that dentists have good knowledge but poor practice regarding various aspect of infection control which provide an indication either lack of availability facilities or poor supervision and monitoring, due to lack of policy and implementation regarding cross infection control in dental units
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Karimi-sari, Hamidreza, and Mohammad Saeid Rezaee-zavareh. "Antiplatelet therapy and exodontia: far away from a definite conclusion." Asian Journal of Pharmaceutical and Clinical Research 9, no. 6 (2016): 1. http://dx.doi.org/10.22159/ajpcr.2016.v9i6.14065.

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Dear Editor;We read a review article about antiplatelet therapy and dental management in your journal (1). Kumar concluded that patients taking dual antiplatelet therapy has an increased risk for post-operative bleeding complications.The focus question of this article contains many other smeller questions. We recently answered one of these questions in our study; one tooth extraction is safe in patients taking aspirin and clopidogrel during one year after percutaneous coronary intervention (PCI) with stenting (2). But many questions remained without answer. Is two teeth extraction safe in these patients? What about more than two teeth extraction or in patients taking other antiplatelet drugs for other indications? What about other dental interventions? For answering each of these specific questions we need to design a prospective original study, with enough sample size, and comparing the results with a matched control group.Also there are many confounders for bleeding after exodontia (e.g. dentist's skill, type of antiplatelet drug and its manufacturing company, indication and duration of taking antiplatelet therapy, number and kind of extracted teeth, and dentist's skill) (2, 3). Controlling these confounders needs prospective studies focusing on specific group of patients. For example, patients taking unique dose and type of antiplatelet drug for a unique indication and duration, undergoing unique dental intervention by unique dentist. Then this result could be compared with a group of healthy subjects undergoing same dental intervention by the same dentist. So we do not have enough evidences to make a definite conclusion about what we should do in case of dental intervention for patients taking antiplatelet therapy.
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Carvalho, Joana Christina, Dominique Declerck, Wolfgang Jacquet, and Peter Bottenberg. "Dentist Related Factors Associated with Implementation of COVID-19 Protective Measures: A National Survey." International Journal of Environmental Research and Public Health 18, no. 16 (2021): 8381. http://dx.doi.org/10.3390/ijerph18168381.

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Little is known about the extent to which dentists have implemented COVID-19 infection control guidelines and the factors influencing this process in daily practice. This national online survey assessed the implementation of enhanced infection control guidelines in daily practice, and explored dentist related factors influencing their application, more specifically dentist infection status and their perceived risk of cross-infection in the dental setting. The survey was validated, pretested and carried out in 2020. A total of 1436 dentists participated, of whom 9.1% presumably had COVID-19 infection experience. At least 75% of dentists complied with the core part of the recommended protective measures protocol. For each patient treated during the pandemic, an additional cost of 10–30 EUR (86.7%) and an extra time of 10–30 min (70.7%) was estimated. A stepwise binary logistic regression analysis revealed that dentists assumed to have experienced COVID-19 reported a higher self-perceived risk of virus acquisition (β = 2.090; p = 0.011), lower concern of getting infected (β = 0.576; p = 0.027), and lower confidence in being able to prevent disease transmission in the dental setting (β = 0.535; p = 0.022). Some parts of the protective measures were more difficult to apply than others; however, there was no indication of increased disease acquisition in the dental setting.
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Khan, Mahnoor, Rhea Soltau, Juehwan Sea, and Amelia K. Sofjan. "2078. Patterns, Indications, and Appropriateness of Antibiotics Prescribed at a Private Dental Practice." Open Forum Infectious Diseases 6, Supplement_2 (2019): S700—S701. http://dx.doi.org/10.1093/ofid/ofz360.1758.

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Abstract Background Although dentists prescribe 10% of all outpatient antibiotics in the United States (US), prescribing patterns among dentists in the United States are largely unknown especially in private practice. We aimed to describe the patterns and indications of antibiotics prescribed at a United States private dental practice and evaluate prescription appropriateness. Methods This was a retrospective cohort study of all patients who received an antibiotic at a private dental practice in Baytown, TX, between 2017 and 2019. A thorough guideline and literature search was conducted to define the indication-specific appropriateness of antibiotics. The prescribing dentist and an antimicrobial stewardship pharmacist reviewed each patient chart to verify diagnosis and antibiotic indication. Each prescription was categorized as appropriate (evidence supports use), inappropriate (evidence does not support use), indeterminate (insufficient evidence to support or not support use), or not enough information (inadequate patient-specific data to determine appropriateness). Results Of 3,700 patient encounters, an antibiotic was prescribed for 230 (6.2%) encounters. Antibiotics prescribed were amoxicillin (52.2%), amoxicillin/clavulanate (27.8%), penicillin VK (7.8%), azithromycin (4.8%), clindamycin (3.5%), cephalexin (2.2%), and metronidazole (1.7%). Excluding antibiotics given as a single pre-operative dose (6% of antibiotics), the mean duration of antibiotics was 5 ± 0.6 days (mean ± SD). Antibiotic indications were symptomatic apical periodontitis or localized acute apical abscess (51.3%), symptomatic irreversible pulpitis (17.8%), prevention of implant failure (11.7%), pericoronitis (4.3%), acute apical abscess with systemic involvement (3.9%), and others (11%). Of the 230 antibiotic prescriptions, 27.8% were appropriate, 3.9% inappropriate, 66.1% indeterminate, and 2.2% not enough information. Conclusion Commonly prescribed antibiotics in this study were amoxicillin or amoxicillin/clavulanate for a mean duration of 5 days. The most common indication was symptomatic apical periodontitis or localized acute apical abscess. Two-thirds of antibiotics were prescribed without sufficient evidence to support or not support use. Disclosures All authors: No reported disclosures.
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Ashik Ahamed, Subhashree Rohinikumar, and Dhanraj Ganapathy. "Knowledge among Dentists about the usage of Opioid analgesics in Dental Practice." International Journal of Research in Pharmaceutical Sciences 11, SPL3 (2020): 811–16. http://dx.doi.org/10.26452/ijrps.v11ispl3.3027.

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The treatment of pain is very common in dental practice. Analgesics is the safest way to relieve pain. Conventional analgesics are known as opioids and nonopioids, although the old words "narcotics" and "non-narcotics" continue to be used interchangeably. Dependence and resistance are well recognized characteristics of daily use of opioid analgesics, but this does not automatically hinder use in palliative care.The dentist should have a clear knowledge in prescribing opioid drugs to the patients. To assess dentists regarding knowledge, attitude and opinion on prescribing opioid analgesics in dental practice. A close ended questionnaire comprising of 10 questions regarding knowledge, precautionary measure, indication, guidelines in prescribing opioid analgesics in dental practice will be distributed to 100 dental practitioners. Data was tabulated and analysed by computing the percentage response for each question. Majority of the practitioners (83%) were aware and some of them (17%) were unaware regarding the usage of opioid analgesics in dental practice. Most of the respondents in this study knew the background of opioid drugs, indication, contraindication and their usage in dental practice. However, dentists should be cautious in prescribing any form of drugs to the patient.
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Monsarrat, Paul, Antoine Galibourg, Karim Nasr, Norbert Telmon, and Delphine Maret. "Incidental findings in dental radiology are concerning for family doctors." Open Medicine 14, no. 1 (2019): 467–78. http://dx.doi.org/10.1515/med-2019-0050.

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AbstractCone Beam Computerized Tomography (CBCT) is an imaging technology increasingly used in dentistry. Depending on the size of the examination area, visualization of anatomical structures outside the indication area may reveal incidental findings (IF). The aims of this systematic review and meta-analysis were to 1) evaluate the frequency, location and different types of incidental findings (IF) revealed during CBCT examinations; 2) identify potential influencing factors such as gender or age; 3) highlight what the family doctor should know about CBCT and the benefits for medical care.70 retrospective studies were included. 60% of IF are in the naso-oropharyngeal airway and paranasal sinuses. Carotid calcifications were observed with a mean prevalence of 9% CI95% [2-21]). Meta-regression showed a significant association of this prevalence with age, irrespective of gender.Given the high frequency of IF, with varying severity, the whole medical community is fully involved, and its opinion should be sought to ensure the best possible management for the patients. Physicians may also require CBCT examinations that would have been previously prescribed by a dentist, that may serve to better orientate investigations toward another imaging technique. The family doctor is therefore the dentist’s main interlocutor and the main coordinator of the follow-up of IF.
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SOUSA, Fernanda Santos de Oliveira de, Ana Paula Pires dos SANTOS, Fernanda BARJA-FIDALGO, and Branca Heloisa de OLIVEIRA. "Evidence-based pediatric dental practice within the clinician's reach: the case of the esthetic effect of topical silver diamine fluoride for caries control in primary dentition." RGO - Revista Gaúcha de Odontologia 64, no. 4 (2016): 369–75. http://dx.doi.org/10.1590/1981-863720160003000013231.

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ABSTRACT Objective: The aim of this paper was to demonstrate how a general dental practitioner tried to answer, based on scientific evidence, to the question: "Does the darkening of caries lesions caused by silver diamine fluoride treatment contribute to reducing parents' acceptance of such treatment?". Methods: The dentist adopted the following approach: formulation of a specific question; bibliographic search using controlled vocabulary and free terms; selection of full-text articles for reading; reading and critical appraisal of selected articles; summary of the available evidence; translation of the evidence into clinical practice. The dentist identified 45 studies and selected 20 to be read in full, but only three could be used; two controlled trials from China and one from Brazil. Results: Results showed that the esthetic effect was neither a major issue nor a decisive factor for the indication of the proposed treatment. However, although there is robust scientific evidence on the effectiveness of silver diamine fluoride in arresting and preventing caries lesions, there is scarce information about its esthetic effect. Thus, the lack of studies assessing the impact of the darkening of caries lesions and the esthetic effect of the treatment on the quality of life of children and their parents must be emphasized. Conclusion: The dentist concluded that there is insufficient evidence about the esthetic effect of silver diamine fluoride applications on primary teeth and opted to inform it to his/her patients' caregivers and to share with them the decision whether to use it or not in each specific case.
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PIEROTE, Josué Junior Araújo, Maria Hellen Sâmia Fortes BRITO, Larissa Campos Rodrigues PINHEIRO, Lúcia de Fátima Almeida de Deus MOURA, Marina de Deus Moura de LIMA, and Marcoeli Silva de MOURA. "Knowledge and conduct of public health system dentist about atraumatic restorative treatment." Revista de Odontologia da UNESP 46, no. 2 (2017): 82–89. http://dx.doi.org/10.1590/1807-2577.06616.

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Abstract Objective To evaluate the knowledge and conduct of dentists of the Public Health System (Family Health Strategy – FHS) regarding Atraumatic Restorative Treatment (ART). Material and method A census survey was conducted and all FHS dentists from the urban area of the city of Teresina, Piauí, Brazil were visited in their workplaces and invited to participate in this study. Data collection was carried out between July and October, 2014 through self-administered questionnaires. For statistical analysis the chi-square test with a significance level of 5% and the linear association test were applied. Result One hundred and eighty-three professionals participated in the study (with a response rate of 89.7%), mostly women (71.0%), aged twenty to thirty-nine years (49.2%), with twenty or more years’ experience since graduation (45.9%), working only in the public service (70.5%), and with expertise in the clinical area (44.3%). Most of them believe in ART (82.7%) and 95.8% of them apply it (of those, 58.9% apply it only in public service). The professionals’ individual knowledge of ART was measured and most of them have correct information regarding the treatment. The knowledge level evaluation was significantly associated with age and time since graduation (p<0.05). Conclusion Most of the dentistsworking in the public health system of Teresina, Piauí, Brazil have a good knowledge of and show positive behavior towardentists ART, but improvement is needed regarding the technique and its correct indication.
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Altoukhi, Doua H., and Azza A. El-Housseiny. "Hall Technique for Carious Primary Molars: A Review of the Literature." Dentistry Journal 8, no. 1 (2020): 11. http://dx.doi.org/10.3390/dj8010011.

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The high frequency of caries in primary teeth and its inadequate treatment are major public health problems during childhood. Nowadays, the Hall technique is one of the methods used for biological sealing in carious lesions in primary molars. Thus, the bacteria will be sealed from oral environment and the caries will be inactive. The objective of this article was to provide an updated search on the Hall technique description, indication, contraindication, advantages, concerns, success and failure, cost-effectiveness, acceptability, and preference in pediatric dentistry, and to compare the Hall technique with traditional crown preparation and conventional treatment options for carious primary molars. A discussion of the recently published articles on the Hall technique reveals that the Hall technique is considered a promising restorative option with high acceptability and longevity; with low failure rate for managing carious primary molars compared to conventional treatment modalities used in primary care settings. Furthermore, the survival rate of stainless steel crowns (SSCs) is considered high, whether provided using Hall technique or traditional preparation by a pediatric dentist. Thus, the Hall technique can be an effective addition to the clinician’s range of treatment options for carious primary molars. However, it should be chosen in restricted cases.
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Randall, Ros C., Matthijs MA Vrijhoef, and Nairn HF Wilson. "Dentists’ Perceptions of Trends in Restorative Dentistry in the UK." Primary Dental Care os10, no. 2 (2003): 49–52. http://dx.doi.org/10.1308/135576103322500737.

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Purpose of study To obtain responses to a questionnaire on likely trends in the clinical practice of restorative dentistry from a national sample of general dental practitioners (GDPs) who were principals of group practices in the UK. Basic procedures A panel of nine experts had been convened previously to define areas of trends in restorative dentistry in the UK and to formulate these into statements. Twenty trends were identified and framed into a 22-item questionnaire based on the trend statements. The questionnaire was sent to a national sample of 2800 principal dentists in group practices. Names of principal dentists were taken from the Yellow Pages directories, a group practice being defined as at least one principal dentist and one other practitioner. Levels of agreement for questionnaire scores of ≥70% for all segments of a statement were taken as indicating a possible trend. Main findings Of the 2800 questionnaires sent out, 1448 were returned, a return rate of 52%. Of these, 1217 questionnaires were usable, an overall response rate of 44%. Good agreement was obtained for 14 statements (64%). Principal conclusion: The 14 trend statements that scored a level of good agreement were taken as indicating possible trends in dentistry in the UK as perceived by those GDPs who responded to the questionnaire. However, in view of the fact that the 1217 usable questionnaires received reflected the opinions of 10% of the principal dentists in group practice in the UK, this will not be representative of all principal dentists in practice. Nevertheless for the purposes of gaining some insight into trends in restorative dentistry, it could be considered to be of value.
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Dissertations / Theses on the topic "Dentist indication"

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Lamas, Rita Regina Souza. "Agentes para desinfecção de aparelhos acrílicos ortodônticos: o que os usuários utilizam e o que os dentistas recomendam?" Universidade Federal de Pelotas, 2012. http://repositorio.ufpel.edu.br/handle/ri/2237.

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Made available in DSpace on 2014-08-20T14:30:08Z (GMT). No. of bitstreams: 1 Dissertacao_rita_regina_souza_lamas.pdf: 2792167 bytes, checksum: 98b838b5683d2fd51f71535422c7380b (MD5) Previous issue date: 2012-12-14<br>Poor hygiene associated with the use of orthodontic appliances in children and adolescents may increase the occurrence of oral diseases associated to, such as caries and gingivitis, turning important the knowledge of the most effective, used and designated cleaning methods for these devices. The objectives of this study were to determine the frequency of use of removable orthodontic appliances, hygiene methods used by school children and prescribed by dentists of the city of Pelotas/RS, and evaluating variables associated with it. This study was conducted in the city of Pelotas in a sample of schoolchildren aged 13-19 years from 20 schools, 16 public and 4 private. Two questionnaires were conducted to determine some socio-demographic and behavioral characteristics associated with the use of braces and another to determine the cleaning methods indicated by dentists of the city. The questionnaire of children was performed in the schools and the dentists questionnaire was performed through telephone calls. Statistical analysis was descriptive and bivariate, through the Chi-square test, or Fisher Linear Trend, depending on the type of variable exhibitor, with a p-value <0.05 as statistically significant. The frequency of use in schools was 5.4%. Students (89.76%) and dentists (47.21%) reported brushing with toothpaste as the main method of cleaning. In conclusion, the method most widely used and recommended for acrylics hygiene appliances, prescribed by dentists and used by adolescents, was brushing with toothpaste<br>A higiene precária associada ao uso de aparelhos ortodônticos em crianças e adolescentes pode aumentar a ocorrência de enfermidades bucais como a cárie e doenças periodontais, tornando-se importante o conhecimento dos métodos mais efetivos, mais utilizados e indicados para higienização destes dispositivos. Os objetivos deste estudo foram: determinar a frequência de uso de aparelhos ortodônticos removíveis, os métodos de higiene utilizados por escolares e indicados por dentistas da cidade de Pelotas/RS, além de avaliar variáveis associadas com isso. Foi utilizada uma amostra de escolares de 13-19 anos, provenientes de 20 escolas, quatro privadas e 16 públicas. Foram realizados dois questionários para determinar algumas características sócio-demográficas e comportamentais associadas ao uso de aparelhos ortodônticos e outro para determinar os métodos de higiene indicados pelos cirurgiões-dentistas da cidade. O questionário dos estudantes foi realizado nas escolas e o dos dentistas através de ligações telefônicas. A análise estatística foi através de análise descritiva e através de associações com os testes: Qui-Quadrado (X2) de Pearson ou Tendência linear, conforme o tipo de variável expositora, com um valor p<0,05 como estatisticamente significativo. A frequência de uso nas escolas foi de 5,4%. Os estudantes (89,76%) e dentistas (47,21%) relataram, como método de limpeza, escovação com creme dental. Em conclusão, o método mais usado e mais recomendado para higiene de aparelhos acrílicos prescrito por dentistas e usado por adolescentes foi escovação com creme dental
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Sevilla, Hélène Soueidan Assem Le Guiffant de Kerleau Aymeric. "Limites de conservation des molaires et indications implantaires." [S.l.] : [s.n.], 2007. http://castore.univ-nantes.fr/castore/GetOAIRef?idDoc=14561.

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Dauzat, Antoine Clergeau Léon Philippe. "Indications et techniques de comblements alvéolaires post-extractionnels." [S.l.] : [s.n.], 2008. http://castore.univ-nantes.fr/castore/GetOAIRef?idDoc=49906.

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Tchéré, séka Iphigénie marie-laure. "Surveillance de la santé bucco-dentaire en Afrique : recommandations méthodologiques pour le recueil standard d’informations." Thesis, Lyon 1, 2009. http://www.theses.fr/2009LYO10278.

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Ce travail est une contribution aux travaux en cours de l'Organisation mondiale de la Santé pour la mise en place et la diffusion d’outils standards dans les pays africains, visant à une intégration efficiente des indicateurs de santé bucco-dentaire dans la base mondiale des statistiques sanitaires. Ces indicateurs dits "essentiels" axés sur les déterminants sociaux sont en phase avec les objectifs du millénaire et dépassent l'idée selon laquelle "les problèmes sociaux et de développement urgents dans les pays en développement peuvent être résolus de manière isolée, par des approches cloisonnées dans des secteurs spécifiques". L'Afrique ne saurait être en reste de ce nouvel enjeu du millénaire qui impose que des efforts soient réalisés dans tous les secteurs de développement. Les vingt-deux indicateurs recommandés par l'Organisation mondiale de la Santé pour la région africaine ouvrent le champ d'une redynamisation de l'activité bucco-dentaire au plan national et font le lit d'une approche communautaire opérationnelle et intégrée pour la surveillance et la lutte contre les maladies buccodentaires. Leur validation sur le terrain d'exercice, la recommandation de méthodologies de collecte associée en Côte d'Ivoire, via le développement d’un projet pilote, est l’objectif prioritaire de ce travail de recherche. Deux questionnaires ont été développés puis évalués et servent respectivement à la surveillance de la santé buccodentaire des enfants et des adolescents. Les analyses donnent des propriétés psychométriques relativement satisfaisantes et impliquent la prise en compte d'un certain nombre de recommandations pour accroître leur validité et leur faisabilité dans le contexte Ivoirien. Leur généralisation dans la région africaine exige des recherches complémentaires en vue de leur optimisation dans une démarche communautaire opérationnelle intégrée qui reclasse le district sanitaire au coeur du système de surveillance<br>This work is a contribution to the activities of the World Health Organization relative to the implementation and the distribution of standard tools in the African countries to reach an efficient integration of the essential oral health indicators in surveillance in African countries. These essentials indicators fit into the objectives of the new millennium and exceed the idea according to which " the social problems have to be developed in an isolated way. To be in phase with this new paradigm, African countries have to face these new approaches which require that efforts be realized in all development sectors. Twenty two indicators recommended by the World Health Organization for the African region give opportunities to improve oral health activities on the national level and develop an integrated community approach which is the more operational for surveillance and prevention of oral diseases. The collect of the indicators in Ivory Coast motivates this study, which results are recorded in this document. The findings are the result of many years of research and practice related to the implementation and development of oral health activities in Côte d'Ivoire. Two questionnaires were evaluated and measure respectively oral health indicators for general population, and for children and teenagers. Analyses conclude in relatively good psychometrics properties, but imply the taking account of many recommendations which aim to increase the validity and the feasibility of these questionnaires in the context of the Côte d'Ivoire. Their generalization in the African region requires future researches in a way of their optimization in an integrated operational community based-approach, and a redefinition of the role of local actors in sanitary district
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Alharbi, Hamad. "Degree of disk displacement as a prognostic indicator in arthrocentesis outcomes: clinical and MRI correlation." Thesis, 2015. https://hdl.handle.net/2144/16026.

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AIMS: Multiple studies have shown that arthrocentesis is an effective treatment for internal derangement of the temporomandibular joint. However, it is not known which patient groups will respond to this procedure. It is often difficult for surgeons to preoperatively the outcome of athrocentesis. This had led some researchers to analyze and evaluate specific variables which could possibly be used as prognostic factors to predict the outcome of arthrocentesis. None of those studies used the amount of disc displacement as a prognostic factor to assess the treatment outcome of arthrocentesis. Therefore, our study objective was to evaluate the amount of disc displacement as a prognostic factor for the outcome of arthrocentesis in patients with Internal derangement of the tempromandibular joint. MATERIALS AND METHODS: The study involved a retrospective review of the treatment records of 46 patients who underwent arthrocentesis of the TMJ by a single surgeon between 2010 and 2013. A prognostic factor evaluated for its effect on the treatment outcome of TMJ arthrocentesis in this study was the degree of disc displacement. For study purposes, patients were divided into two groups: 1) Success group, and, 2) Failure group. Patients were categorized as successful if they met the success criteria prescribed by the American Association of Oral and Maxillofacial Surgeons in 1995. MRI of TMJ was performed in two steps. Initially, oblique parasagittal sections were scanned with a 1.5 T MRI machine. The amount of disc displacement was analyzed from sagittal oblique views of the MRI scans in closed mouth positions by measuring the angle between the posterior band of the articular disc and the center of the condylar head. The disc is considered to be in its normal position when the thicker portion of its posterior band lies within ±10° on the 12 o'clock position. First, the condylar head was identified, and a circle was established to describe the outline of the anterior, posterior, and superior surfaces of the condylar head; this allowed separation of the condylar head from the neck region. Second, the center of the circle was identified and a vertical line was drawn from the center of the circle. The last step was to measure the degree of displacement from this vertical line to the posterior band of the disc. Findings were compared for patients in the two groups for the following variables: age (continuous), disc displacement (continuous), and gender (female or male). P-value were calculated for differences in continuous or categorical variables using a T-test or Pearson's chi-squared test, respectively. The mean MMO, pain and diet scores were also reported in the preoperative group and 12 months postoperative group by outcome status. Statistical significance was set at p < .05 based on a two-tailed test. SPSS was used for all statistical analyses (SPSS Inc, Chicago, IL, 1997). RESULTS: 46 patients with 46 joints were evaluated in the present study. Average age of patients was 31 years with arrange of 24 to 46 years. 35 cases (76.1%) were classified as successful and 11 cases (23.9%) were classified as unsuccessful based on the criteria described earlier. In the successful group, the mean MMO score was found to be greater at the 12 months postoperative interval when compared to the preoperative examination. In the unsuccessful group, the mean MMO score was also greater than preoperatively at the 12 months postoperative group but to a lesser extent than seen in the successful group. Pain level improved more in the successful group compared to the unsuccessful group. Diet scores showed improvement in chewing ability in the successful group but remain unchanged in the unsuccessful group There was a statistically significant difference between the two groups in the degree of anteriorly disc displacement. CONCLUSION: In summary, it has been shown that the degree of disc displacement, preoperative pain level, diet score, and MMO can be used as prognostic factors for the outcome of TMJ arthrocentesis. Future investigations should more carefully evaluate the validity of other variables. Identifying prognostic factors for the outcome on arthrocentesis will help with guiding surgeons in the planned evaluation of TMJ cases. More specifically, clinicians will be able to create tailored treatment modalities based upon prognostic factors.
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Books on the topic "Dentist indication"

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Seban, Alfred. Manuel pratique d'implantologie: Indications et principes thérapeutiques. Ellipses Édition Marketing S.A., 1999.

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Miron, Richard J., and Joseph Choukroun, eds. Platelet Rich Fibrin in Regenerative Dentistry: Biological Background and Clinical Indications. John Wiley & Sons, Ltd, 2017. http://dx.doi.org/10.1002/9781119406792.

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Miron, Richard J., and Joseph Choukroun. Platelet Rich Fibrin in Regenerative Dentistry: Biological Background and Clinical Indications. Wiley & Sons, Incorporated, John, 2017.

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Miron, Richard J., and Joseph Choukroun. Platelet Rich Fibrin in Regenerative Dentistry: Biological Background and Clinical Indications. Wiley & Sons, Incorporated, John, 2017.

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Platelet Rich Fibrin in Regenerative Dentistry: Biological Background and Clinical Indications. Wiley-Blackwell, 2017.

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Longridge, Nicholas, Pete Clarke, Raheel Aftab, and Tariq Ali. Oxford Assess and Progress: Clinical Dentistry. Edited by Katharine Boursicot and David Sales. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780198825173.001.0001.

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Oxford Assess and Progress: Clinical Dentistry features over 270 Single Best Answer questions. Written and peer-reviewed by clinicians working within each specialty and mapped to dental school curricula, this is an authoritative guide for dental students providing a wealth of revision. Organised by specialties, chapter introductions unlock difficult subjects with hints and tips. Each question is accompanied by detailed answers explaining the rationale behind right and wrong answers. Cross-references to the Oxford Handbook of Clinical Dentistry and further reading resources, expand your revision further. A four star rating system indicating question difficulty to monitor your progress as you learn. Key words also help highlight specific clues or words that can assist with recall. Oxford Assess and Progress: Clinical Dentistry is your prescription for exam succcess.
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Book chapters on the topic "Dentist indication"

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Beagle, Jay R. "Indications and Contraindications." In Surgical Essentials of Immediate Implant Dentistry. John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118783412.ch3.

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Gluckman, Howard. "Platelet Rich Fibrin as an Adjunct to Implant Dentistry." In Platelet Rich Fibrin in Regenerative Dentistry: Biological Background and Clinical Indications. John Wiley & Sons, Ltd, 2017. http://dx.doi.org/10.1002/9781119406792.ch10.

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Miron, Richard J., Giovanni Zucchelli, and Joseph Choukroun. "Uses of Platelet Rich Fibrin in Regenerative Dentistry: An Overview." In Platelet Rich Fibrin in Regenerative Dentistry: Biological Background and Clinical Indications. John Wiley & Sons, Ltd, 2017. http://dx.doi.org/10.1002/9781119406792.ch4.

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Jain, Anuj. "Principles and Techniques of Exodontia." In Oral and Maxillofacial Surgery for the Clinician. Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-15-1346-6_13.

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AbstractDental extraction is a routinely carried out procedure in any dental set up. Even after the tremendous progress in the fields of preventive and restorative dentistry, exodontia remains to be a vital procedure. The increase in the public awareness regarding retaining their natural teeth has made exodontia an even more challenging procedure as more extractions are being carried out in elderly patients. With the increasing average age, the difficulty and complexity of the extraction procedure increases.This chapter exhibits the general overview of the challenging procedure called exodontia highlighting its various aspects like indications, contraindications, complications, etc. with a special mention about the procedure to be carried out in different scenarios and various technological advances in exodontia.
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Choukroun, Joseph, and Richard J. Miron. "Platelet Rich Fibrin: A Second-Generation Platelet Concentrate." In Platelet Rich Fibrin in Regenerative Dentistry: Biological Background and Clinical Indications. John Wiley & Sons, Ltd, 2017. http://dx.doi.org/10.1002/9781119406792.ch1.

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Miron, Richard J., Michael A. Pikos, Yufeng Zhang, and Tobias Fretwurst. "Guided Bone Regeneration with Platelet Rich Fibrin." In Platelet Rich Fibrin in Regenerative Dentistry: Biological Background and Clinical Indications. John Wiley & Sons, Ltd, 2017. http://dx.doi.org/10.1002/9781119406792.ch11.

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Simonpieri, Alain. "Modern Approach to Full Arch Immediate Loading: The Simonpieri Technique with PRF and i-PRF." In Platelet Rich Fibrin in Regenerative Dentistry: Biological Background and Clinical Indications. John Wiley & Sons, Ltd, 2017. http://dx.doi.org/10.1002/9781119406792.ch12.

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Nacopoulos, Cleopatra. "Use of Platelet Rich Fibrin in Facial Aesthetics and Rejuvenation." In Platelet Rich Fibrin in Regenerative Dentistry: Biological Background and Clinical Indications. John Wiley & Sons, Ltd, 2017. http://dx.doi.org/10.1002/9781119406792.ch13.

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Miron, Richard J., and Joseph Choukroun. "Use of Platelet Rich Fibrin in Other Areas of Medicine." In Platelet Rich Fibrin in Regenerative Dentistry: Biological Background and Clinical Indications. John Wiley & Sons, Ltd, 2017. http://dx.doi.org/10.1002/9781119406792.ch14.

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Miron, Richard J., and Joseph Choukroun. "Future Research with Platelet Rich Fibrin." In Platelet Rich Fibrin in Regenerative Dentistry: Biological Background and Clinical Indications. John Wiley & Sons, Ltd, 2017. http://dx.doi.org/10.1002/9781119406792.ch15.

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Conference papers on the topic "Dentist indication"

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Arumugam, Udayasankar, Ming Gao, Ravi Krishnamurthy, Rick Wang, and Richard Kania. "Study of a Plastic Strain Limit Damage Criterion for Pipeline Mechanical Damage Using FEA and Full-Scale Denting Tests." In 2016 11th International Pipeline Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/ipc2016-64548.

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Pipeline constructed in rocky terrain is vulnerable to damages such as denting, gouging and other mechanical damages. In-line inspection (ILI) of these pipelines often reported several hundreds or even thousands of dents. Although most of these reported dents are well below 6% outside diameter (OD) depth limit as per ASME B31.8, few dents (sharp rock dents) with high strain could pose threat to integrity of the pipeline. Recently, strain-based models have been proposed to assess mechanical damage severity in pipelines. Attempts have also been made to characterize cracking susceptibility in rock dents using the critical strain based ductile failure damage indicator (DFDI) model. The objective of this study is to validate this model using full-scale denting tests conducted at the laboratory. Additionally, validation also extends to against the simplified DFDI model without finite element analysis (FEA). In this paper, the existing ASME strain limit and strain limit damage models are reviewed. The critical strain based strain damage model known as Ductile Failure Damage Indicator (DFDI) is then presented. The theoretical aspect of this model, including early work by Hancock and Mackenzie on strain limit (εf, reference failure strain) for ductile failure, is reviewed. The experimental aspect of material critical strain and its measurement using uni-axial tensile testing are then described. An elastic-plastic finite element analysis is employed to calculate DFDI, which is used to quantify the accumulated plastic strain damage and its susceptibility to cracking, and is validated using six full scale denting tests. Finally, the simplified strain limits for plain dent is proposed and validated.
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Oleinik, Olga I., and Olga Popova. "Automatized securing definition for laser therapy indications in cases of noncomplicated caries." In Advanced Laser Dentistry, edited by Gregory B. Altshuler, Richard J. Blankenau, and Harvey A. Wigdor. SPIE, 1995. http://dx.doi.org/10.1117/12.207032.

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Catros, S., M. Fenelon, A. Rui, et al. "Création d’un site internet Européen de formation au sevrage tabagique." In 66ème Congrès de la SFCO. EDP Sciences, 2020. http://dx.doi.org/10.1051/sfco/20206603002.

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Introduction : Actuellement 208 millions de personnes consomment du tabac en Europe dont 12 millions en France. 650 000 décès sont attribuables au tabac en Europe et environ 60 000 décès par an sont imputables à cette consommation en France, ce qui en fait la première cause de décès évitable. Tous les acteurs de santé devraient être mobilisés pour lutter contre ce fléau. Le chirurgien dentiste doit se sentir concerné car il s’agit d’un enjeu général de santé publique mais aussi spécifique de santé bucco-dentaire. En effet le tabac est l’étiologie principale de certaines maladies graves de la muqueuse buccale : carcinomes épidermoïdes, leucoplasies, carcinome verruqueux (1). Le tabac est aussi un cofacteur favorisant les maladies parodontales (2). Enfin la consommation de tabac perturbe la cicatrisation après les actes de Chirurgie Orale et c’est une contre indication relative aux interventions chirurgie implantaire. Malgré ce constat, les chirurgiens dentistes restent peu impliqués dans l’accompagnement du sevrage tabagique (3). Les raisons sont probablement liées à un manque de formation et de connaissances qui limitent la mise en oeuvre du sevrage tabagique auprès de leurs patients. Pour pallier ce manque, un projet européen a été mis en place grâce à un financement du programme ERASMUS + (4). L’objectif de ce projet est de former les professionnels de santé européens au sevrage tabagique grâce à plusieurs outils. Matériels et Méthodes : Le principal outil de formation sera un site internet diffusé en langue Anglaise, Française, Italienne, Portugaise, et Espagnole. Ce site permettra de fournir un outil d’e-learning afin de promouvoir l’implication des professionnels de santé et notamment des chirurgiens dentistes dans le sevrage tabagique. Par ailleurs, un livre téléchargeable reprenant le contenu du site internet sera également diffusé. Enfin, plusieurs actions de diffusion de l’information seront menées tout au long du projet au travers de communications lors de congrès scientifiques et d’articles dans des revues professionnelles. Résultats : Le site et le livre électronique sont accessibles gratuitement à partir du lien : http://smokingcessationtraining.com/ en/home/ en langue anglaise. La version française sera publiée en ligne dans le premier semestre 2018. Le site a été réalisé sous la coordination de Rui Albuquerque (Birmingham Dental Hospital UK) avec la collaboration de Ross Keat (Birmingham Dental Hospital UK), Jean-Christophe Fricain et Sylvain Catros (Université de Bordeaux, France), Marcio Diniz Freitas (Universidade de Santiago de Compostela Espagne), Luis Monteiro (Universitaério de Ciências da Sauéde Portugal), Giovanni Lodi (Universita di Milano, Italy). Conclusions : Ce projet devrait permettre d’augmenter le niveau de compétence des utilisateurs et un certificat sera délivré à ceux qui complèteront l’évaluation en ligne. Ce projet devrait permettre d’avoir un impact éducatif en formant les chirurgiens dentistes, un impact sur la santé des patients et un impact économique en réduisant les couts sociétaux induits par le tabagisme.
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Torres, Luis, Geoff Vignal, Kaitlyn Korol, Jeffrey Sutherland, and Stephan Tappert. "Detection of Crack-Related Features Within Dented Pipe Using Electromagnetic Acoustic Transduction (EMAT) Technology." In 2016 11th International Pipeline Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/ipc2016-64216.

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Mechanical damage has been identified as a significant integrity threat within the Oil &amp; Gas pipeline industry. In addition to deformation, associated secondary pipeline damage may also consist of coating removal, metal removal and cold working of the underlying metal that may result in cracking within the dented area. Detection of cracks within dented areas of the pipe using conventional Ultrasonic Technology (UT) and Magnetic Flux Leakage (MFL) In-line Inspection (ILI) technologies has been of limited success due to the variety of possible feature expressions, sensor design and arrangements, and the related complexity within the underlying physics for detection and characterization. Previous studies have shown the feasibility of Electro Magnetic Acoustic Transduction (EMAT) technology for detecting and characterizing crack related indications within dents on liquid pipelines. This study expands upon experimental investigations using pull through ILI tests on manufactured dents where machined linear indications (notches) were introduced into the dents. In this paper, the performance of EMAT technology for detection and characterization of crack related features in liquids pipelines under real operating conditions is presented. EMAT data were combined with high resolution caliper data, ultrasonic crack inspection data and dent strain assessment data, to demonstrate the EMAT capabilities to enhance pipeline integrity management of dents. Results of field non-destructive examinations are compared to EMAT predicted values to assess the performance of this technology. This study presents a supplementary method of detecting and mitigating coincidental crack related features with dents on liquids pipelines, further enhancing the safety and improving the integrity management of pipelines.
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Tiku, Sanjay, Arnav Rana, Binoy John, and Aaron Dinovitzer. "Dent Screening Criteria Based on Dent Restraint, Pipe Geometry and Operating Pressure." In 2020 13th International Pipeline Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/ipc2020-9703.

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Abstract A safety advisory (2010-01), issued by the National Energy Board (NEB) in June 2010, referenced two incidents which were a result of a fatigue crack failure that occurred within shallow dents [1]. The dents in both instances were less than 6% (of the OD). Currently, there is no consensus on how shallow dents or shallow dents with stress concentrators, as called by the ILI tool, are assessed and acted upon. BMT Canada Ltd. (BMT) was contracted by the Canadian Energy Pipeline Association (CEPA) to develop a definition for shallow dents, and two levels of screening method for the integrity assessment of shallow restrained dents and unrestrained dents. These two levels are known as CEPA Level 0 and CEPA Level 0.5 dent integrity assessment techniques that may be applied without finite element modelling or detailed calculations. The BMT dent assessment finite element (FE) modeling method was used to develop an extensive database of dents for different pipe geometries (OD/t), indenter shapes, pipe grades, and indentation depths. The results of the FE modelling were used to develop trends for the stress magnification factors (KM) across the range of pipes and dents modelled. These trends are used as the basis for the Level 0 and Level 0.5 dent screening and assessment approaches that can be used for both unrestrained dents and shallow restrained dents. The results show that for low OD/t pipe geometry and/or low spectrum severity indicator (SSI) [2] dent fatigue life may not pose an integrity threat. These dent screening approached have been adopted in the API Recommended Practice 1183 Dent Assessment and Management, that is currently under development.
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Torres, Luis A., Matthew J. Fowler, and Jordan G. Stenerson. "Assessment of In-Line Inspection Performance and Interpretation of Field Measurements for Characterization of Complex Dents." In 2016 11th International Pipeline Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/ipc2016-64136.

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Integrity management of dents on pipelines is currently performed through the interpretation of In-Line Inspection (ILI) data; this includes Caliper, Magnetic Flux Leakage (MFL), and Ultrasonic Testing (UT) tools. Based on the available ILI data, dent features that are recognized as threats from a mechanical damage perspective are excavated and remediated. Federal codes and regulations provide rules and allow inference on what types of dent features may be a result of mechanical damage; nonetheless, there are challenges associated with identifying dents resulting from mechanical damage. One of the difficulties when managing the mechanical damage threat is the lack of information on how MFL and UT ILI tool performance is affected by dented areas in the pipe. ILI vendors do not offer any technical specifications for characterizing and sizing metal loss features in dents. It is generally expected that metal loss tool performance will be affected in dented areas of the pipe, but it is not known to what degree. It is likely that degradation will vary based on feature shape, sensor design, and sensor placement. Because metal loss tool performance is unknown within the limits of the dented pipe, other methods for recognizing mechanical damage have been incorporated into the management strategies of mechanical damage. Some of these methods include strain based assessments and characterization of shape complexity. In order to build a more effective integrity management program for mechanical damage, it is of critical importance to understand how tool technology performance is affected by dented areas in the pipe and what steps can be taken to use ILI information more effectively. In this paper, the effectiveness of MFL and UT wall measurement tools in characterizing and sizing metal loss features within dents is studied by evaluating against field results from non-destructive examinations of mechanical damage indications. In addition, the effectiveness of using shape complexity indicators to identify mechanical damage is evaluated, introducing concepts such as dents in close proximity and multi-apex dents. Finally, the effectiveness of ILI tools in predicting dent association with girth welds is also explored by comparing ILI and field results.
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Alande, C., and C. Landric. "Autotransplantation de germes dentaires au centre hospitalier de Pau : une série de cas." In 66ème Congrès de la SFCO. EDP Sciences, 2020. http://dx.doi.org/10.1051/sfco/20206603008.

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Autotransplantation de germes dentaires au centre hospitalier de Pau : une série de cas Alande C1, Landric C2 1. Interne en Chirurgie Orale, UFR Odontologie, Service ORL et Stomatologie CH Pau 2. Spécialiste en Chirurgie Orale, Assistante hospitalière, CH Pau. INTRODUCTION : L’autotransplantation correspond au déplacement d’un organe fonctionnel (transplant) d’un site donneur vers un site receveur, sur un même patient. Dans le cadre de l’organe dentaire, le transplant est placé dans une alvéole osseuse intrabuccale naturelle ou préparée chirurgicalement. Les indications sont nombreuses : délabrement carieux, expulsion traumatique, défaut d’éruption, agénésie. C’est une technique chirurgicale peu utilisée, pourtant les métaanalyses les plus récentes font état d’un taux de succès compris entre 75 et 91% (1). Ce travail expose une série de 07 transplantations. OBSERVATION : Les 7 transplantations ont été réalisées au Centre Hospitalier de Pau entre aout 2017 et janvier 2018. Les patients étaient initialement adressés par leur dentiste ou leur othodontiste pour des avulsions. Les indications résultaient toutes d’un délabrement carieux de premières molaires maxillaires ou mandibulaires, ces dernières étant non restaurables. Les patients étaient âgés de 17 à 23 ans. Les transplants étaient tous des germes de 3ème molaire incluse situées au stade 7-8 de Nolla. Le même protocole chirurgical a été systématiquement utilisée pour chacun des patients, à savoir : avulsion de la dent délabrée, révision et rinçage alvéolaire, préparation du site receveur, avulsion du germe, temps extra-alvéolaire le plus court possible, positionnement dans le site receveur avec ajustement si nécessaire, mise en sous occlusion par améloplastie, contention. Un soin tout particulier était accordé à la préservation des cellules desmodontales du transplant. Les patients n’ont pas présenté de complication per ou postopératoire. Leur suivi post-opératoire est en cours et est réalisé de façon systématique à 1 semaine, 1 mois, 2 mois avec orthopantomogramme et 6 mois. Pour être considérées comme un succès, les transplantations devaient présenter les critères suivants : poursuite de l’édification radiculaire, absence de mobilité du transplant, absence de signes infectieux cliniques et radiologiques, visualisation radiologique d’un ligament alvéolo-dentaire sans signe d’ankylose. DISCUSSION : De plus en plus d’études tendent à montrer que la préservation des cellules desmodontales est un des facteurs majeurs pour la réussite du traitement (2). Avec l’avènement de la planification 3D (3), ce paramètre pourra être d’avantage contrôlé. Les taux de succès de cette thérapeutique, déjà élevés, pourraient être amenés à augmenter d’avantage. Les transplantations sont aujourd’hui une alternative de choix au traitement implantaire chez les jeunes patients.
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Semiga, Vlad, Sanjay Tiku, Aaron Dinovitzer, and Wendy Wagster. "Evaluation of Fatigue in Gas Pipelines." In 2016 11th International Pipeline Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/ipc2016-64486.

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There is a commonly held belief that internal operational pressure fluctuations of a gas pipeline is less likely to result in fatigue cracking than a liquid pipeline. A defensible engineering analysis process, demonstrating that this observation remains valid for all gas pipeline systems regardless of operation (i.e. transmission, bi-directional flow at storage facilities), existing features (i.e. dents or preexisting cracks), material properties (i.e. pipe vintage, grade) and pipeline geometry, needs to be developed. The work reported in this paper describes the work sponsored by the Interstate Natural Gas Association of America (INGAA) to support gas pipeline operators in completing Integrity Verification Programs (IVP) by defining which pipeline segments can reasonably be considered to be at risk of fatigue damage accumulation and which are not. This paper presents an overview of the work completed to develop a defensible approach to demonstrate the conditions under which pipeline pressure fluctuation induced fatigue is not a concern. The development of this approach, presented in this paper, considers the results of a survey of the range of cyclic severities experienced by gas pipeline operators, typical feature types and sizes that could exist in a pipeline system (i.e. mechanical damage, cracking) and the role of material properties on these assessments. The paper includes the development of directions as to the collection and analysis of SCADA pressure data to produce a pressure spectrum severity indicator (SSI) characterizing the fatigue damage potential of an operational history. This SSI is used along with fatigue susceptibility tables indicating the conditions for which fatigue would not be a concern for a pipeline segment. The susceptibility criterion relates a pipelines operation, in terms of SSI to the maximum feature size that can exist in the system before fatigue is considered a threat to pipeline integrity. The information presented in this paper would be of interest to pipeline operators, maintainers, consultants and regulators. The technical work presented in this paper was completed to support compliance with regulatory requirements and may also be used to influence the application of integrity management regulatory requirements on gas pipeline systems by providing information and processes to eliminate the need to consider fatigue as a damage accumulation process or integrity threat.
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Sayed, Ahmed, Ahmed Mahmoud, Eros Chaves, Richard Crout, Kevin Sivaneri, and Osama Mukdadi. "Assessment of Gingival Inflammation Using Ultrasound Imaging." In ASME 2012 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/imece2012-89627.

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Gingivitis is the most common gingival inflammation in the oral cavity, and the most prevalent periodontal disease affecting 90% of the population in all age groups. Recently, a few research groups have investigated the possibility of using ultrasound in dentistry, particularly in diagnosing bony destruction in the more severe form of periodontal disease called periodontitis. This work investigates the feasibility of using ultrasound imaging to quantitatively assess gingival tissue inflammation. Signal and image processing of ultrasound data have been performed to quantitatively assess gingival tissue. A number of gingival scans were conducted in vitro to render ultrasound images of high-spatial and contrast resolutions. For each sample the B-mode images were matched with almost the same slices in histology. Results show that ultrasound scans for tissues with gingivitis exhibited low intensity of reflections (hypo echoic) at the inflamed tissues, while healthy dense epithelium layers exhibited higher reflections (hyper echoic). Histological diagnosis revealed good agreement with the ultrasound results indicating the usefulness of such ultrasound imaging in diagnosing gingivitis. In addition, a new design for an intraoral linear array ultrasound probe is demonstrated and utilized in our clinic in vivo. Analysis of the echogenicity patterns of the resultant images demonstrates the potential of using such a new probe in gingival health assessment, which would be feasible and clinical relevant for patient evaluations clinically.
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Xu, Tianzong (David). "Understanding Quantitative Performance of Large Standoff Magnetometry in Detecting Live Gas Pipeline Anomalies With Stress Estimation." In 2018 12th International Pipeline Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/ipc2018-78655.

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Large standoff magnetometry (LSM) is an emerging non-intrusive, above-ground, passive geo-magnetization flux leakage measurement technology to detect pipeline features or anomalies associated with elevated stresses. Although many promising field trial results have been reported in the past, its overall performance still has not reached sufficient consistency and reliability. This paper presents PG&amp;E’s effort in gaining some fundamental understanding of the current LSM technology and its qualitative &amp; quantitative performance. Specifically location accuracy of girth weld, casing end, dent and landslide damage is analyzed with references to inline inspection (ILI) and excavation data. In addition, basic physics of LSM stress quantification is examined using references of a full-scale finite element stress analysis on selected plain dents. The outcomes indicate advanced global navigation satellite system (GNSS) tool plus capability of identifying girth weld are important to achieve good anomaly location accuracy especially as LSM tends to report more indications than other inspection technologies in current practice. The LSM stress estimation and its comparison to pipe’s specified minimum yield strength (SMYS) may be only good quantitatively within magneto-elastic regime where localized stress concentration zones (SCZs) are under elastic stress loading only and without presence of residual plastic stress.
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