Dentistry Commons^™

Wear Of Orthodontic Bite Turbos And Opposing Enamel, Kyle Feagin

All ETDs from UAB

Orthodontic bite turbos are used to separate the maxillary and mandibular arches when disocclusion is needed for facial placement of orthodontic brackets or extrusion of teeth. The bite turbo should have adequate wear resistance to maintain the disocclusion but also avoid abrasion of the opposing enamel. The objective of this study was to measure the wear and opposing enamel wear of three materials used as bite turbos. 8 specimens (10x8x4 mm) each of Transbond LR (3M), Transbond Plus (3M) and Triad gel (Dentsply) were prepared in silicone molds and light cured for 30 seconds using an Acteon Satelec Blue Ray …

A Study Of Enamel Thickness Of Permanent Maxillary Canines, Daniel Diaz Rubayo

All ETDs from UAB

Introduction: Tooth agenesis is defined as the lack of development of a tooth. Maxillary lateral incisors have been reported to be missing in 2.2% of the population in the United States of America. Two treatment options are available: opening the space to restore the missing tooth with a dental prosthesis; or close the space by moving the adjacent teeth into the space and substituting the missing lateral incisor with the maxillary canine. With a wider crown and a more convex labial surface than lateral incisors, canines require a significant amount of reduction in order to achieve an adequate occlusion and …

Non-Surgical Correction Of Anterior Open Bites Using Temporary Anchorage Devices, Kimberly Spencer Butts

All ETDs from UAB

Objective: The purpose of this study is to determine the skeletal, dental and soft tissue effects that occur as a result of maxillary posterior TAD intrusion; to compare treatment outcomes of growing patients to a growing matched control group; and to present a simplified TAD intrusion technique. Methods: This is a retrospective cohort study using lateral cephalometric radiographs of 16 (5 male, 11 female, average age 38y 4m) non-growing patients and 16 (5 male, 11 female, average age 13y 11m) growing patients with anterior open bite malocclusions treated with temporary anchorage devices (TADs) to intrude the maxillary posterior segments. Growing …

Bioactive Materials: Ion Release & Recharge, Wear, Gloss & Hydroxyapatite Formation, Mohammed Badahman

All ETDs from UAB

Introduction : Dental caries is one of the most prevalent chronic diseases 1. Unfortunately, there have been numerous failures with the treatment rendered, the materials used and how they are used. One significant cause for dental restoration failure is secondary caries and the need to replace the existing restoration. It has been reported that more than half of the restorations placed have been replaced because of recurrent caries. New materials and techniques have been developed to enhance adhesives in dentistry and improve the bonded interface however that interface still remains the weakest component of composite restorations. Marginal degradation and the …

Sheehan Syndrome, Riya Jain, Shashidhara Kc, Savitha Savitha

Digital Journal of Clinical Medicine

No abstract provided.

Ectopia Lentis, Pratheek Prabhu

Digital Journal of Clinical Medicine

No abstract provided.

Cerebro-Vascular Accident, Mehak Gera, Rajendra Prasad, Suresh Babu, Manthappa M

Digital Journal of Clinical Medicine

No abstract provided.

Pulmonary Thromboembolism In A Case Of Alopecia Areata, Rakshith M

Digital Journal of Clinical Medicine

No abstract provided.

Impact On Bacterial Micro-Leakage In Exposed Root Canal Obturation Material In Teeth Irrigated With Different Solutions, Khalifa W. Alhaddad

Theses and Dissertations

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 suspended between two chambers: the …

Comparison Of Patient Factors Influencing The Selection Of An Orthodontist, General Dentist, Or Direct-To-Consumer Aligners For Orthodontic Treatment, Jeffrey C. Olson

Theses and Dissertations

Purpose: To evaluate the factors that influence potential orthodontic patients choosing between an orthodontist, general dentist, and direct-to-consumer (DTC) aligners for their treatment, and to determine the demand for each provider type.

Methods: An electronic survey was administered to 250 individuals among the general population of adults in the United States. Questions were designed to determine the respondent’s level of interest in pursuing orthodontic treatment with each provider type, evaluate their current level of knowledge concerning provider options, and identify factors influencing their selection. Pearson’s chi-squared test and ANOVA were used to evaluate the factors influencing patients in …

Evaluation And Comparison Of Periapical Healing Using Periapical Films And Cone Beam Computed Tomography: Post-Treatment Follow Up, Adam S. Polinsky

Theses and Dissertations

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 examiners. Changes and differences in the estimated area from PA to CBCT were …

Frictional Properties Of Novel Bracket Systems: An In-Vitro Study, Stephen M. Haverkos

Theses and Dissertations

Orthodontic brackets undergo resistance during sliding that includes classical friction, binding, and notching. Current bracket systems are hampered by these challenging forces. As a result, the clinician usually needs to apply additional forces to overcome the resistance which increases the risk of root resorption and discomfort for the patient. This study evaluated frictional properties of a novel bracket that had polytetrafluoroethylene (Teflon™) coated rollers in its design. Five types of brackets (n = 10, each), including a passive self-ligating bracket, a traditional ligated bracket, a three-dimensionally printed direct metal laser sintering (DMLS) bracket with and without Teflon™ rollers, and computer …

Let’S Face It: The Effect Of Orthognathic Surgery On Facial Recognition Algorithm Analysis, Carolyn Bradford Dragon

Theses and Dissertations

Aim: To evaluate the ability of a publicly available facial recognition application program interface (API) to calculate similarity scores for pre- and post-surgical photographs of patients undergoing orthognathic surgeries. Our primary objective was to identify which surgical procedure(s) had the greatest effect(s) on similarity score.

Methods: Standard treatment progress photographs for 25 retrospectively identified, orthodontic-orthognathic patients were analyzed using the API to calculate similarity scores between the pre- and post-surgical photographs. Photographs from two pre-surgical timepoints were compared as controls. Both relaxed and smiling photographs were included in the study to assess for the added impact of facial pose on …

The Efficacy Of A Fluoride-Containing Orthodontic Primer In Preventing Demineralization, Alyssa G. Ricci

Theses and Dissertations

Purpose: To evaluate the efficacy of a fluoride-containing orthodontic primer in preventing demineralization adjacent to brackets and compare the quality of enamel on tooth surfaces that received interproximal reduction (IPR).

Methods: Patients at the VCU Orthodontic clinic who consented to orthodontic treatment involving extraction of at least 2 premolars were recruited to this pilot clinical study. Brackets were bonded to premolars using one of two primers, fluoride-containing experimental or control. IPR was also performed, and the experimental primer was applied to randomly selected teeth. Extracted teeth were analyzed visually for the presence of white spot lesions (WSLs). Micro-CT analyses were …

Aadej Comm 50 3 2019

AADEJ - The Communicator

The Communicator is the official journal of the American Association of Dental Editors and Journalists (AADEJ). It is published quarterly, distributed digitally via email to members, and posted on the Association's website, AADEJ.org. Each issue includes regular updates from the editorial team and AADEJ board, as well as feature articles on current issues in the field.

Oral Health Care: An Autoethnography Reflecting On Dentistry's Collective Neglect And Changes In Professional Education Resulting In The Dental Hygienist Being The Prevention-Focused Primary Oral Health Care Provider, Maureen Patricia Mcweeney Harrington

University of the Pacific Theses and Dissertations

Many factors influence poor oral health among disadvantaged populations including socioeconomic circumstances, knowledge of disease prevention strategies and ability to implement those strategies, public policies, insurance status, insurance policies, dental providers and other challenges to accessing dental care. Often these issues converge and result in early disadvantages to achieving good oral health (Horton & Barker, 2010). Addressing even some of the factors that contribute to poor oral health may provide ways to change the dental health status of historically underserved populations. The purpose of this research is to explore my role as a practitioner and researcher in the creation of …

Culture Of Dental Pulp Stem Cells On Nanoporous Alumina Substrates Modified By Carbon Nanotubes, Ameneh Alizadeh, Amir Razmjou, Mehrorang Ghaedi, Ramin Jannesar, Fahimeh Tabatabaei, Vahid Pezeshkpour, Lobat Tayebi

School of Dentistry Faculty Research and Publications

Purpose: Alumina substrates are one of the commonly used scaffolds applied in cell culture, but in order to prevent formation of biofilm on the alumina substrate, these substrates are modified with carbon nanotube. Methods: The alumina substrate was made by a two-step anodization method and was then modified with carbon nanotubes by simple chemical reaction. The substrates were characterized with FTIR, SEM, EDX, 3D laser scanning digital microscope, contact angle (CA) and surface free energy (SFE). To determine how this modification influences the reduction of biofilm, biofilm of two various bacteria, Escherichia coli (E.coli) and Staphylococcus aureus ( …

The Smile Attractiveness Of Patients Successfully Treated According To The Finishing Standards Of The American Board Of Orthodontics, Tayem Abou Saleh

All ETDs from UAB

Smiling is the most useful way people can use to express their emotions, therefore, it is critical to build our treatment plan not just around establishing a stable functional occlusion but also to achieve beautiful harmonious smile. It has been suggested that the smile may be made up of 3 components: Gingival component, soft tissue component, and dental component, and the ultimate smile beauty can be achieved by trying to find the balance in between these components. We collected 68 smiling photos for cases were taken to American board of orthodontics clinical exam and they were considered successfully treated, all …

Identification And Application Of Gingival Mesenchymal Stem Cells For Dental Tissue Regenration, Yousuf Al-Aboosi

All ETDs from UAB

Mesenchymal stem cells have been very attractive treatment modality in regenerative medicine, but not so much in regenerative dentistry. This can be attributed to the difficulty in obtaining dental origin stem cells without extracting a tooth or other invasive procedures. Autogenous gingival graft harvested from palatal tissue is used as the gold standard for treating single tooth recession. The healing of the gingival graft has been shown to be mostly depended on the recipient side more than the graft itself. This study is aiming to find if the palatal tissue has cells with mesenchymal characteristics that are helping in the …

External Root Resorption In The Orthodontic Patients, Frank Earl Litchfield

All ETDs from UAB

External Apical Root Resorption (EARR) is a side effect of orthodontic treatment that results in root shortening in about one-third of orthodontic patients. Great variability among patients exists in their susceptibility to this multifactorial condition, and both treatment and patient specific factors contribute to EARR. Root resorption values were found to be higher in Hispanics compared to Asians and Caucasians (1). However, the prevalence of EARR is not well documented in all populations. Since African Americans represent the largest minority group in the United States, establishing the prevalence and risk factors for EARR within this ethnicity is important. Objective: To …