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Dissertations / Theses on the topic 'Endodontics and Endodontology'

Author: Grafiati

Published: 4 June 2021

Last updated: 19 February 2022

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1

Vranas, Ronald Nicholas. "The effect of endodontic solutions on resorcinol-formalin paste." VCU Scholars Compass, 2002. https://scholarscompass.vcu.edu/etd/5618.

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This study determined if any of four endodontic solutions would have a softening effect on resorcinol-formalin paste and if there were any differences in the solvent action between these solutions. Resorcinol, formalin and zinc oxide were mixed and allowed to set for 30 days. The solutions tested were 0.9% sodium chloride, 5.25% NaOCl, chloroform and Endosolv R. Seven samples per solution were tested and an additional seven samples served as controls. Each sample was saturated with one of the solutions and the depth of penetration was tested at 1 min, 2 min, 5 min, 10 min and 20 min using a di

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2

Howard, Cameron. "Regulation of dental pulp stem cell migration and regenerative endodontics." Thesis, NSUWorks, 2010. https://nsuworks.nova.edu/hpd_cdm_stuetd/8.

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3

Limosani, Mark. "Clinical outcomes and practitioner's opinions on regenerative procedures in endodontics." Thesis, NSUWorks, 2011. https://nsuworks.nova.edu/hpd_cdm_stuetd/6.

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4

Kim-Park, Melanie A. "Working Length Determination in Palatal Roots of Maxillary Molars." VCU Scholars Compass, 2002. https://scholarscompass.vcu.edu/etd/5127.

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The aim of this study was to determine if a buccal curvature in the palatal roots of maxillary molars affected the clinician’s ability to accurately determine working length. Twenty-seven extracted, human maxillary molars were sorted by palatal root curvatures as J- and C-type and the angle of curvature was determined. Straight-line access was made and a #20 file was placed into the canal until the tip was visible at the apical foramen then withdrawn. The file, tooth and calibration wire were radiographed on one image using the RVG. Actual (file) and radiographic (tooth) lengths were determine

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5

Suffridge, Calvin Buford. "Cleaning Efficiency of Nickel Titanium GT and .04 Rotary Files when used in a Torque Controlled Rotary Handpiece." VCU Scholars Compass, 2002. https://scholarscompass.vcu.edu/etd/5533.

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This study determined if the cleaning efficiency of NiTi rotary files in an endodontic electric handpiece using a no torque control setting was superior to that obtained when using the torque control feature. Fifty extracted human anterior teeth with straight canals were divided into two groups of 20 and two control groups of 5. Canals were instrumented with GT and .04 Profile NiTi files until a size 35 advanced to working length. Samples were sectioned, the apical 6 mm of the canal was photographed (x20) and projected onto a 3 x 4 foot grid with squares measuring 0.5 inches each. Total debris

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6

Gebhardt, Matthew. "Evaluation of tissue engineering scaffolds for regenerative endodontic treatment." Thesis, NSUWorks, 2008. https://nsuworks.nova.edu/hpd_cdm_stuetd/10.

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Sedwick, Richard W. "Observations of Trends and Successes of Revascularization Therapy at Virginia Commonwealth University: A Retrospective Study." VCU Scholars Compass, 2018. https://scholarscompass.vcu.edu/etd/5368.

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The aim of this study was to determine the trends in protocol, success rates, and consistency in follow up of revascularization procedures in a controlled environment. Patients of the Virginia Commonwealth University School of Dentistry were identified who were offered revascularization therapy as a treatment option on immature permanent teeth from January 1, 2010 to May 31, 2017. A total of 77 patients and 78 teeth were evaluated for revascularization therapy. For patients accepting treatment, records were reviewed for outcome assessment and consistency of follow up. A total of 30 patients (3

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Gotlieb, Eric. "Research to develop stem cell and tissue engineering therapies for endodontic treatment." Thesis, NSUWorks, 2007. https://nsuworks.nova.edu/hpd_cdm_stuetd/11.

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Rigberg, Andrew. "Creation of improved endodontic materials and the development of new biocompatibility standards to screen endodontic materials." Thesis, NSUWorks, 2006. https://nsuworks.nova.edu/hpd_cdm_stuetd/13.

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"A thesis submitted to the College of Dental Medicine of Nova Southeastern University of the degree of Master of Science. Endodontics, College of Dental Medicine, Nova Southeastern University, July, 2006."

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10

Elseed, Mohammed. "Investigation of periodontal stem cell attachment to dentin and dental pulp stem cell migration." Thesis, NSUWorks, 2007. https://nsuworks.nova.edu/hpd_cdm_stuetd/12.

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11

Herrera, Douglas. "Creation of de novo dental pulp using scaffolds and growth factors." Thesis, NSUWorks, 2010. https://nsuworks.nova.edu/hpd_cdm_stuetd/9.

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12

Cielecki, Margaret. "Investigation of the effects of oral pathogens, antibiotics, and disinfectants on regenerative endodontic treatment." Thesis, NSUWorks, 2011. https://nsuworks.nova.edu/hpd_cdm_stuetd/7.

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13

Sealey, Sheldon M. "Treatment Decisions Involving Teeth with Intrapulpal Cracks: A Survey of Endodontists." VCU Scholars Compass, 2015. http://scholarscompass.vcu.edu/etd/3714.

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There is no universal protocol for diagnosing, treating and managing cracked teeth. The purpose of this survey was to investigate the use of traditional methods of crack detection and to explore how treatment decisions were made using an intrapulpal crack classification. The electronic survey was sent to 1115 active members of the American Association of Endodontists (AAE) and The Digital Office (TDO™) community. Comparisons were assessed using logistic or repeated-measures regression. The most often used diagnostic method was probing. When the crack involved one wall, 85% of respondents would

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Packer, Gardiner McKay. "The Use of Implants vs. Endodontics: Practitioner Attitudes in 2007." VCU Scholars Compass, 2008. http://scholarscompass.vcu.edu/etd/1048.

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The purpose of this study was to determine what factors influence dentists when deciding whether to place an implant or perform endodontic retreatment. Null hypothesis: Dentists today are no more likely to place an implant than to perform endodontic retreatment. A twelve-item questionnaire was mailed to 525 general dentists and specialists who are members of the Richmond Dental Society. Response rate was 61.9%. The questionnaire included items on demographics, practice profile and cases of failing endodontic therapy which participants were asked to consider and chose between endodontic retr

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15

Turner, Ellison. "Endodontic Education and Educators: Who is teaching our predoctoral students and what methods are being taught?" VCU Scholars Compass, 2010. http://scholarscompass.vcu.edu/etd/2141.

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A survey was conducted to assess the current state of predoctoral endodontic education in the United States. Fifty-one schools received surveys and 73% responded. Seventy-six percent were from public schools with most having a graduate endodontic program (84%). Preclinical training most often began in the spring of second year and clinical training started in the fall of third year (each 54%). All programs that responded stated that endodontists routinely instruct students in the clinic. Sodium hypochlorite 2.5% was the irrigation of choice. Calcium hydroxide was the most common intracanal med

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LeTellier, Paul Jr. "ENDODONTIC RESIDENTS’ UNDERSTANDING OF BIOSTATISTICS: A 2010 SURVEY OF ENDODONTIC RESIDENTS IN THE UNITED STATES." VCU Scholars Compass, 2010. http://scholarscompass.vcu.edu/etd/2128.

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Endodontic residents must keep current with clinical information to practice evidence- based dentistry. To do so, endodontic residents must access research papers and interpret results. This requires a knowledge of biostatistics. However, the biostatistical knowledge of endodontic residents is relatively unknown. The purpose of the study was to assess the biostatistical knowledge of endodontic residents using a survey instrument to prove or reject the hypothesis that there exists a lack of understanding of biostatistic principles among endodontic residents. A survey consisting of 29 questions

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Green, Megan E. "The Effect of Instrumentation Taper on Dentin Conservation." VCU Scholars Compass, 2018. https://scholarscompass.vcu.edu/etd/5344.

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Introduction: The aim of this in vitro study was two part. The first being to assess and compare the amount of dentin removed by an instrument with a taper of 0.04 versus an instrument with a taper of 0.06 using the Edge Evolve® file system at different increments within the canal system. Secondly, this study evaluated whether instrumentation with either taper resulted in a remaining dentin thickness (RDT) of less than 0.3mm. If this RDT was imposed upon, fracture resistance was compromised. Both pre and post instrumentation measurements were taken of samples instrumented with the 0.04 and 0.0

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Beavers, Charles M. "Restorative Characteristics of Intrapulpally Cracked Teeth." VCU Scholars Compass, 2015. http://scholarscompass.vcu.edu/etd/3713.

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Cracked teeth have long presented a diagnostic challenge. Previous investigators have considered possible predictive factors, many of which revolve around the tooth’s restorative characteristics. Few have investigated the restorative status of teeth with cracks extending into the pulp chamber. The purpose of this investigation was to determine the prevalence of the different types of restorations present in intrapulpally cracked teeth and determine any other restorative factors that may aid in predicting the presence or extent of an intrapulpal crack. Intrapulpally cracked molars requiring end

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Arasu, Eshwar. "Evaluation of Volumetric Change of Periapical Lesions After Apicoectomy as a Measure of Postsurgical Healing Utilizing Cone Beam Computed Tomography." VCU Scholars Compass, 2017. http://scholarscompass.vcu.edu/etd/4740.

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The aim of this study was to evaluate whether volumetric changes in persistent periapical lesions can be detected in follow-ups six months to five years after apicoectomy using cone-beam computed tomography. Patients with a previous treatment history of apicoectomy and for whom a pre-surgical CBCT scan was taken between November 2010 and December 2015 were invited to participate in the study. A post-surgical CBCT image of the treated tooth was obtained at the recall visit. Volumetric and linear measurements of periapical lesions on initial and postoperative CBCT images were performed using DiT

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Bhagchandani, Sanjay. "Use of Cone Beam Computed Tomography in the Determination of Mental Foramen Location in Relation to Mandibular 1st and 2nd Premolars." VCU Scholars Compass, 2010. http://scholarscompass.vcu.edu/etd/2165.

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The purpose of this study was to use existing Cone Beam Computer Tomography images to determine the vertical and horizontal location of the mental foramen in relation to the mandibular first and second premolars, as well as the distance in millimeters from the apex of each. The distance from the inferior border of the foramen to the inferior border of the mandible was also recorded. The average distance from the apices of the mandibular first and second premolars to the mental foramen was 7.43mm (SD= 1.97) and 5.30mm (SD=1.65) respectively. The foramen was located 11.44mm (SD=1.49) from the in

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Packer, McKay Barlow. "Comparison of treatment planning decisions when combining CBCT and digital radiography verses digital radiography alone." VCU Scholars Compass, 2016. http://scholarscompass.vcu.edu/etd/4140.

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Cone beam computed tomography (CBCT) is the recommended imaging modality of choice for evaluating previous endodontic treatment (1). The aim of this study was to compare treatment planning decisions made when evaluating previous endodontic treatment to determine if treatment planned and projected prognosis differs when digital radiography is used alone or in combination with CBCT. A retrospective chart review was conducted. Patients for whom a CBCT was taken were included in the study. Twenty-eight patients qualified. Patient’s periapical digital radiographs (Dexis©) were evaluated by 2 calib

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Krygowski, Sarah. "The prevalence, predictive factors, and classification of intrapulpal cracks in maxillary premolars requiring endodontic treatment." VCU Scholars Compass, 2015. http://scholarscompass.vcu.edu/etd/3869.

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Cracked teeth may be difficult to diagnose. Craze lines rarely become symptomatic or require treatment. Cracks in the enamel and dentin alone may or may not become symptomatic and require restorative treatment. However, cracks extending into the enamel, dentin, and pulp chamber provide an avenue for bacteria to establish infection and this commonly results in symptoms and the need for endodontic and restorative treatment. The published endodontic literature has limited information regarding the prevalence or predictive factors for cracks extending into the pulp chamber of teeth. The purpose of

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karashi, husain. "The Prevalence, Predictive Factors, and Classification of Intrapulpal Cracks in Maxillary Molars Requiring Endodontic Treatment." VCU Scholars Compass, 2017. http://scholarscompass.vcu.edu/etd/4755.

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Diagnosis and treatment of teeth with longitudinal fractures is challenging. Cracks are usually not visible radiographically; they require a thorough evaluation to aid in diagnosis. Patients may be asymptomatic, demanding the dentist rely on clinical findings to make a diagnosis. Early diagnosis of the presence and extent of a crack is essential for the successful management of a cracked tooth. There is limited information in the literature regarding the prevalence or predictive factors of cracks extending into the pulp chamber of teeth. The purpose of this study was to determine the prevalenc

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Garden, Laura T. "Potential Antimicrobial Methods for Provisionalizing Teeth After Endodontic Treatment." VCU Scholars Compass, 2018. https://scholarscompass.vcu.edu/etd/5334.

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POTENTIAL ANTIMICROBIAL METHODS FOR PROVISIONALIZING TEETH AFTER ENDODONTIC TREATMENT By Laura T. Garden, DDS A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Dentistry at Virginia Commonwealth University. Virginia Commonwealth University, 2018 Thesis Advisor: Garry Myers, DDS Department of Endodontics Objective:To evaluate the effectiveness of a Chlorhexidine soaked cotton pellet on bacterial leakage. Methods: Fifty-one extracted teeth, including six controls, were instrumented, obturated, and sealed with either a cotton pellet (CP), 2% Chlo

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Fessenden, Sean D. "Torsional Testing of Race, K3 and Profile Nickel Titanium Endodontic Files." VCU Scholars Compass, 2004. http://scholarscompass.vcu.edu/etd/1012.

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Rotary endodontic instruments have different cross sectional designs that may effect their resistance to torsional stress. The purpose of this study is to evaluate the static torsional properties of two nickel titanium files that have recently been introduced for use in endodontics and compare them to the same size Profile instruments. Ten new files of each brand and size were tested. The files tested were: RaCe 25 tip 0.02, 0.04, 0.06 taper, K3 and Profile 25 and 40 tip in 0.02, 0.04 and 0.06 taper. The diameter of each file was measured at 3mm from tip. The last three millimeters of th

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Sarnowski, Adam. "Management of the Open Apex Using a Bioceramic Apical Barrier: Success and Survival Rates at Virginia Commonwealth University." VCU Scholars Compass, 2019. https://scholarscompass.vcu.edu/etd/5765.

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Purpose: The aim of this study was to assess the outcome of treatment of teeth with open apices managed by the orthograde placement of a bioceramic apical barrier as well as to identify potential outcome factors for this type of treatment. Methods: Patient records were pooled from graduate resident cases completed at Virginia Commonwealth University between January 1, 2010 and May 31, 2018. A total of 515 patients were identified using relevant ADA codes and a key word search within the patient record database. A total of 104 patients (119 teeth) had an open apex that had NSRCT utilizing a bio

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Lee, Katherine JS. "Lowering the Number of False Positive Responses to Electric Pulp Tests by Qualifying Patient Response." VCU Scholars Compass, 2015. http://scholarscompass.vcu.edu/etd/3712.

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The electric pulp test (EPT) has been shown to be a valuable tool in assessing pulp vitality. One of its drawbacks, however, is its high number of false positives. The purpose of this study was to determine if qualifying the type of sensation elicited by the test could lower the percentage of false positive responses. A retrospective chart review of an eleven-month period was conducted, examining all patients with necrotic teeth tested with the EPT. Of 189 teeth, when the patient responded to EPT at first sensation 23.3% of teeth were incorrectly identified as vital. When the patient was asked

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Mellin, Todd Peter. "Interobserver Reliability in the Diagnosis of Pulpal and Periradicular Disease." VCU Scholars Compass, 2005. http://scholarscompass.vcu.edu/etd/722.

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The purpose of this study was evaluate the interobserver reliability of endodontists in the diagnosis the presence or absence of pulpal and/or periradicular disease. The study used 47 patients presenting to the VCU School of Dentistry for screening appointments as a test population under the rules and regulations of the VCU IRB. The patients were examined separately by two endodontists, using a thorough patient history, clinical exam, and radiographs. The answer to the question was then answered, does the patient have pulpal and/or periradicular disease, and compared. The data was analyzed

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Schroeder, Stephen N. "THE INCIDENCE OF ROOT DENTINAL MICRO-CRACKS CAUSED BY RECIPROCATING AND CONTINUOUS ROTARY INSTRUMENTATION." VCU Scholars Compass, 2016. http://scholarscompass.vcu.edu/etd/4587.

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The aim of this study was to compare the incidence of root canal dentinal micro-cracks after canal instrumentation using reciprocating files (WaveOne Gold® and Twisted Adaptive®) and continuous rotation files (Edge Evolve® and EndoSequence®) in an ex-vivo benchtop study. This project used a novel methodology of finding dentinal defects using the “K-cube”, which allows evaluators to visualize sectioned root surfaces before instrumentation and after instrumentation. Mesial roots from 40 human mandibular first molars were divided into 4 groups of 10 for each file type. Root section pictures were

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Alhaddad, Khalifa W. "Impact on Bacterial Micro-leakage in Exposed Root Canal Obturation Material in Teeth Irrigated with Different Solutions." VCU Scholars Compass, 2019. https://scholarscompass.vcu.edu/etd/5762.

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Purpose: Determine the timeframe of bacterial penetration that occurs to the apex when obturation material (gutta percha) is exposed to bacteria for a set period of time (45 days) and to determine if bacterial penetration of the obturated root is influenced by the type of irrigant used during the final rinse (17% EDTA vs 2% Chlorhexidine vs full strength 5.25% NaOCl). Methods: Thirty-six extracted teeth, including six controls, were instrumented and irrigated with 5.25% NaOCl followed by a final rinse of either: 17% EDTA, 2% Chlorhexidine, or 5.25% NaOCl, and then obturated. Each root was susp

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Holz, Magdalena S. "Antibiotics and Antimicrobial Resistance: An Evaluation of the Knowledge, Attitude and Perception Among Dental Students and Academic Deans and Department Chairs within U.S. Dental Schools." VCU Scholars Compass, 2019. https://scholarscompass.vcu.edu/etd/5764.

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Purpose: This study aimed to survey current 3rd and 4th year dental students, academic deans, and department chairs within U.S. dental schools to analyze the level of understanding; education; guidelines; and overall awareness regarding antibiotic use within dentistry and antimicrobial resistance. Methods: A 25-question survey intended for 3rd and 4th year dental students and a 20-question survey intended for academic deans and various department chairs of U.S dental schools were each developed utilizing REDCap. The survey invitations were sent via e-mail to the current academic dean of each U

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Gambrel, Madelyn Gay. "The Effect of Endodontic Solutions on Resorcinol-Formalin Paste in Teeth." VCU Scholars Compass, 2003. http://scholarscompass.vcu.edu/etd/797.

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This study determined if any of six endodontic solutions would have a softening effect on resorcinol-formalin paste in extracted teeth, and if there were any differences in the solvent action between these solutions. Forty-nine single-rooted extracted teeth were decoronated two mm coronal to the CEJ, and the roots sectioned apically to a standard length of 15 mm. Canals were prepared to a 12mm WL and a uniform size with a #7 Parapost drill. Teeth were then mounted in a cylinder ring with acrylic. The resorcinol-formalin mixture was placed into the canals and was allowed to set for 60 days in a

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Kyu, Pye. "Antibiotic Use by Members of the American Association of Endodontics: A National Survey for 2009- A Follow up from the Report in 1999." VCU Scholars Compass, 2009. http://scholarscompass.vcu.edu/etd/2006.

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The purpose of this study was to determine the changes in prescribing habits of active members of American Association of Endodontics (AAE) with regards to antibiotics in comparison to the findings reported by Yingling et al. in 1999. The invitations to take the online survey were sent via email to 2593 active members. A response rate of 37.75% was obtained. It was determined to be adequate for analysis and for comparison to the results obtained by Yingling et al. Comparisons between the percentages shown in this survey and the previous survey were tested using a z-test. An ANOVA model was us

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Vaughn, Boyd Aaron. "The Predictive Ability of Specific Questions Related to Symptoms in the Diagnosis of Endodontic Disease." VCU Scholars Compass, 2005. http://scholarscompass.vcu.edu/etd/1304.

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The purpose of this study was to test the predictive ability of specific questions in diagnosis of pulpal and periradicular disease in a dental school population. 210 patients were recruited to fill out a questionnaire, and undergo a clinical examination for pulpal and/or periradicular disease.The Questionnaire asked if the patient had in the last 6 months: 1. a toothache that kept them up at night 2. a toothache that required pain killers 3. facial swelling caused by a tooth 4. injury to any teeth 5. a broken tooth 6. a tooth darker in color than the surrounding teeth 7. a bump, pimple, or bo

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Ferguson, David B. "The Effect of Chlorhexidine Gluconate as an Endodontic Irrigant on the Apical Seal: Long-term Results." VCU Scholars Compass, 2003. http://scholarscompass.vcu.edu/etd/1408.

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The purpose of this study was to determine whether chlorhexidine gluconate (0.12%), used as an endodontic irrigating solution would affect the apical seal of three root canal cements. One hundred extracted human single-canal teeth were divided into 9 experimental groups of 10 teeth each, in addition to a positive and negative control group of 5 teeth each. The teeth were decoronated at the level of the cementoenamel junction, accessed, instrumented to a Master Apical File #50, irrigated with either sterile saline, 5.25% NaOCl or 0.12% chlorhexidine gluconate, and dried using paper points. O

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Tang, Mei. "Change in Working Length at Different Stages of Instrumentation as a Function of Canal Curvature." VCU Scholars Compass, 2018. https://scholarscompass.vcu.edu/etd/5338.

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The aim of this study was to determine the change in working length (∆WL) before and after coronal flaring and after complete rotary instrumentation as a function of canal curvature. One mesiobuccal or mesiolingual canal from each of 43 extracted molars had coronal standardization and access performed. Once the access was completed, canal preparation was accomplished using Gates Glidden drills for coronal flaring and EndoSequence files for rotary instrumentation. WLs were obtained at 3 time points: pre-instrumentation (unflared), mid-instrumentation (flared) and post-instrumentation (concluded

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Lai, Gordon San. "Comparison of Calcium Hydroxide Extrusion with Syringe vs Spiral Filler Delivery: A Pilot Study." Scholarly Commons, 2020. https://scholarlycommons.pacific.edu/dugoni_etd/13.

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Introduction: The aim of this study was to evaluate the frequency and amount of Ca(OH)2 extrusion in relation to the intracanal delivery technique, apical foramen size, and depth of placement. Methods: Standardized training blocks with j-shaped canals were used (n=64); half of the simulated canals were shaped to apical size #35(.06 taper) and the remaining 32 to #45(.06). The frequency and extent of Ca(OH)2 extrusion were measured relative to apical taper, the depth of insertion, and whether syringe or spiral filler was used. Blocks were immersed in pH-sensitive gel and observed for color chan

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Krause, Trisha Ann. "The Antimicrobial Effect of MTAD, Sodium Hypochlorite, Doxycycline, and Citric Acid on E. faecalis." VCU Scholars Compass, 2006. http://scholarscompass.vcu.edu/etd_retro/151.

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The purpose of this study was to compare the antimicrobial effect of MTAD, two of its components, doxycycline and citric acid, and NaOCl on E. faecalis in two in vitro models: the bovine tooth model and the agar diffusion model. In the tooth model, the lumens of thirty bovine dentin discs were standardized, autoclaved and infected with E. faecalis for 14 days. The infected dentin discs were treated with either MTAD, doxycycline 100mg/ml, 10% citric acid, 5.25% NaOCl or saline for 10 minutes. Dentinal shavings were collected using sterile 037 and 040 round burs. The number of bacteria in the sh

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Osmond, Steven. "Comparing Cyclic Fatigue of the new GT® Series XTM Files to the Original ProFile® GT® Rotary Instruments." VCU Scholars Compass, 2009. http://scholarscompass.vcu.edu/etd/1685.

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The purpose of this study was to test the number of rotations to fracture of the M-Wire GT® Series X(TM) rotary files compared to the original ProFile® GT® rotary files in a simulated curved canal. Eighty GT® Series X(TM) files of 25mm length were divided into eight groups of ten, one for each of the new GT® Series X(TM) files. Eighty original ProFile® GT® files of 25mm length were divided into eight groups of the same tip and taper sizes consistent with the GT® Series X(TM) file groups. Files were rotated at 300 rpm. While the angle may have slightly changed due to the flexure property of the

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Oertel, Ellen Rives. "Prevalence of Pulpal and/or Periradicular Disease in the VCU School of Dentistry Screening Patient Population." VCU Scholars Compass, 2005. http://scholarscompass.vcu.edu/etd/1487.

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The purpose of this study was to determine the prevalence and demographic predictors of pulpal and/or periradicular disease in an urban population. A total of 210 subjects were recruited from a population of patients that were screened for acceptance to the dental school clinics. The diagnosis of pulpal and/or periradicular disease was made using the following data: radiographic interpretation, patient's history of previous pain and chief complaint, and objective pulpal testing. Objective pulpal testing included percussion, palpation, electric pulp test, and cold. The unit of observation w

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Aminoshariae, Anita. "Placement of Mineral Trioxide Aggregate Using Two Different Techniques." VCU Scholars Compass, 2002. http://scholarscompass.vcu.edu/etd/1134.

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AbstractTHE PLACEMENT OF MINERAL TRIOXIDE AGGREGATE USING TWO DIFFERENT TECHNIQUESBy Anita Aminoshariae, D.D.S.A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science at Virginia Commonwealth UniversityVirginia Commonwealth University, 2003Major Director: Gary R. Hartwell, D.D.S., M.S.Chairman and Professor, Department of EndodonticsThe purpose of this study was to determine if the adaptation of Mineral Trioxide Aggregate (MTA) to the walls of the samples would differ when placed into simulated root canals of varying length using two different placemen

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Wayment, Nathan. "COMPARING CYCLIC FATIGUE OF THE NEW GT® SERIES X(TM) FILES TO THE ENDO SEQUENCE™ ROTARY INSTRUMENTS." VCU Scholars Compass, 2009. http://scholarscompass.vcu.edu/etd/1684.

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The purpose of this study was to examine the number of rotations to failure of two different rotary file systems, EndoSquence Brassler USA (Savannah, GA) and GT(TM) series X(TM). Files sizes 20,30,40 with 0.04, 0.06 tapers of GT series X and Endo Sequence files size and taper used were 20, 30, 40 with 0.04 and 0.06 taper. Like tip and tapers were compared between systems. All files tested were 25mm in length. Files were allocated into 12 groups of 10 files each, and mounted to a universal testing machine. Each file was rotated at 300 rpms until fractured occurred. The number of rotations t

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Reynolds, Jake. "COMPARATIVE ANALYSIS OF TORSIONAL STRENGTH BETWEEN PROFILE® GT® AND GT® SERIES X(TM) NICKEL TITANIUM ROTARY INSTRUMENTS." VCU Scholars Compass, 2009. http://scholarscompass.vcu.edu/etd/1683.

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The purpose of this study was to compare the resistance to fracture by the twisting of two nickel titanium (NiTi) rotary file systems. The Profile® GT® (GT) and the GT® Series X(TM) (GTX) files were tested to analyze the maximum torsional strength and the maximum angular deflection at the time of separation of the files. For each system, ten new files were tested at each of the following eight taper/size designations for a total of 160 files: 20/0.04, 20/0.06, 30/0.04, 30/0.06, 30/0.08, 40/0.04, 40/0.06, and 40/0.08. The American National Standards Institute / American Dental Association Speci

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Sturgill, Riley B. "Prevalence and Clinical Characteristics of Teeth Extracted with a Diagnosis of Cracked Tooth: A Retrospective Study." VCU Scholars Compass, 2017. http://scholarscompass.vcu.edu/etd/4820.

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The body of knowledge that exists regarding cracked teeth is limited. The purpose of this study was to determine the prevalence of cracks among extracted teeth. This retrospective longitudinal cohort study included patients of the Virginia Commonwealth University School of Dentistry that underwent extraction procedures over a 6 year period. The sample consisted of 20,408 patients and 40,870 teeth. Statistical analysis software was used to identify diagnoses of a crack, fracture, or split tooth prior to extraction of the tooth by analyzing the Electronic Health Record (EHR) (axiUm™, Version 6.0

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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

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Ghowsi, Ali, David Hatcher, Heeyeon Suh, Joorok Park, and Heesoo Oh. "Accuracy and reliability of a fully automated landmark identification system on Cone Beam Computed Tomography." Scholarly Commons, 2021. https://scholarlycommons.pacific.edu/dugoni_etd/17.

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ABSTRACT Introduction: Medical imaging continues to play an increasing role in health care and is an integral part of medicine and dentistry. Recent technological advancements have led to the development of fully automated landmark identification (ALI) systems capable of tracing Cone-Beam Computed Tomography (CBCT). The purpose of this study was to evaluate the accuracy and reliability of an ALI system as a tool for automatic landmark location compared to human judges. Methods: One hundred subjects’ CBCT volumes from multiple imaging centers were traced by two human judges who were calibrated

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Ankrum, Matthew Todd. "K3 Endo, Pro Taper, and Pro File Systems: Breakage and Distortion in Severely Curved Roots of Molars." VCU Scholars Compass, 2003. http://scholarscompass.vcu.edu/etd/842.

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K3 ENDO, PRO TAPER, AND PRO FILE SYSTEMS: BREAKAGE AND DISTORTION IN SEVERELY CURVED ROOTS OF MOLARS.By Matthew T. Ankrum, D.D.S.A Thesis submitted in partial fulfillment of the requirements for the degree of Master of Science at Virginia Commonwealth University.Virginia Commonwealth University, 2003Major Director: Gary R. Hartwell, D.D.S., M.S.Chairman and Professor, Department of EndodonticsIt was the aim of this study to investigate the incidence of file breakage and distortion when the Pro Taper, K3 Endo and ProFile systems were used to instrument canals in the severely curved roots of e

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Ardalan, Cyrous. "A Comparative Study of Intraradicular Enterococcus Faecalis Biofilm Removal with Three Root Canal Treatment Systems: A Scanning Electron Microscopy Evaluation." VCU Scholars Compass, 2017. http://scholarscompass.vcu.edu/etd/4741.

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The objective of this study was to evaluate the biofilm removal efficacy of three root canal treatment systems: ProUltra® PiezoFlow™, traditional needle irrigation, and the GentleWave® system in an ex-vivo benchtop study. Twenty-four extracted maxillary and mandibular molars were selected. Teeth were all instrumented to a master apical file size #25 with 4% taper. Teeth were then randomly divided into four experimental groups and two control groups. The root canals were inoculated with a culture of Enterococcus faecalis and incubated for five weeks to form a biofilm. Each group was then treate

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Polinsky, Adam S. "Evaluation and Comparison of Periapical Healing Using Periapical Films and Cone Beam Computed Tomography: Post-Treatment Follow Up." VCU Scholars Compass, 2019. https://scholarscompass.vcu.edu/etd/5767.

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Purpose: The purpose of this study was to assess the radiographic changes in periapical status and analysis of healing determined using periapical radiographs (PA) versus cone beam computed tomography (CBCT) pre-operatively and at 3-64 months following endodontic treatment. Methods: Pre/post treatment radiograph and CBCT scans of patients who had NSRCT, NSReTx, or SRCT from July 2011-December 2018 at VCU Graduate Endodontic clinic were included in this study. Volumetric and linear measurements of periapical lesions on initial and recall PA and CBCT images were performed using three calibrated

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Shimizu, Kevin. "Facial Tissue Changes with Microimplant Assisted Rapid Palatal Expanders." Scholarly Commons, 2019. https://scholarlycommons.pacific.edu/dugoni_etd/1.

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Introduction: Skeletal expansion has been a treatment modality in orthodontics and orthopedics to correct skeletal transverse discrepancies with maxillary constriction. The utilization of microimplants in conjunction with these palatal expanders offers a higher degree of pure skeletal expansion and minimizes the dental side effects. The purpose of this study is to evaluate the changes of the hard and soft tissues of the face after skeletal expansion for orthodontics. Methods: 36 patients who had received successful expansion with a microimplant assisted rapid palatal expander were compared t

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