Dentistry Commons^™

The Fluoride Recharging Capability Of Orthodontic Materials: An In-Vitro Study, Christine Farah

Theses and Dissertations

Enamel demineralization in the form of white spot lesions (WSLs) around fixed orthodontic appliances is a persistent problem in patients with poor oral hygiene.These lesions can form rapidly within 4 weeks of bracket placement.The purpose of this in-vitro study was to investigate the fluoride recharging capability ofa commercially available orthodontic primer used to minimize the development of WSLs in patients. The three groups tested were: OpalSeal (n=20, Ultradent, South Jordan, UT), ProSeal (n=20, Reliance, Itasca, IL) and Transbond XT (control, n=10, 3M Unitek, Monrovia, CA). The samples(5mmin diameter x 1mm in thickness) weresuspended individually in vials filled with 10mL of …

Ada News - 04/23/2012, American Dental Association, Publishing Division

ADA News

Established in 1970 as the official newspaper of the American Dental Association, the ADA News serves practicing dentists and others allied to the dental profession in the U.S. and internationally. It is the No. 1 source of news and information about the many benefits and services the ADA delivers to members daily as well as timely information on scientific, social, political and economic developments affecting dentistry and health care.

The Effect Of Esthetic Crown Lengthening On Perceptions Of A Patient’S Attractiveness, Friendliness, Trustworthiness, Intelligence, And Self-Confidence, Samuel Lyon Malkinson

Theses and Dissertations

BACKGROUND: Smile esthetics play a major role in the perception of a person’s attractiveness, as well as other social parameters. The study aim was to see if altering the gingival display of patients would affect perceptions of the aforementioned social parameters. METHODS: Smiling photographs were taken and then digitally altered so as to lengthen the teeth and reduce the amount of gingiva. These photographs were shown to a group of senior dental students, and a group of evaluators with no formal dental training. Groups were asked to rate each picture’s attractiveness, friendliness, trustworthiness, intelligence, and self-confidence. RESULTS: The digitally altered …

Accuracy Of Cone-Beam Computerized Tomography In Determining The Thickness Of The Palatal Masticatory Mucosa, Justin Hardison

Theses and Dissertations

BACKGROUND: The aim was to compare the thickness of the palatal masticatory mucosa as determined on a cone-beam computerized (CBCT) scan versus thickness determined via bone-sounding. METHODS: A total of twenty patients requiring palatal surgery participated. Thickness of the palatal tissue was measured at various points radiographically and clinically. The two techniques were compared to determine the agreement of the two measurement modalities. RESULTS: Analysis of variance determined that there was no significant difference between the two methods. A small bias of the radiographic measurement being larger was found to be statistically significant (0.09 ± 0.69mm; p <0.0001). Moreover, the tissue thickness was shown to increase as the distance from the gingival margin increased and the tissue over the molars was thinner than the tissue over the premolars. CONCLUSIONS: CBCT can be used to accurately determine the soft tissue thickness of the palatal masticatory mucosa with minimal bias.

Retentive Cement Strengths With Passive Fit Primary Anterior Esthetic Crowns, Charles Davis Jr.

Theses and Dissertations

Purpose: to assess the retentive strengths of passive fit esthetic anterior restorations using three commercially available cements. Methods: Three resin dies were fabricated from the intaglio surface of each restoration type. Each die was prepared following the current accepted guidelines on primary anterior tooth crown preparation. The three prepared teeth were replicated to produce 30 dies for each of the three restoration types. The prepared teeth were further separated into nine groups of 10 teeth each. Thirty EZ Pedo Crowns, 30 NuSmile Primary Crowns and 30 Unitek crowns were cemented using hand pressure employing the luting cement assigned to the …

Effect Of Local Anesthesia On Postoperative Pain With General Anesthesia, Belinda Campbell

Theses and Dissertations

Purpose: The aim of this study was to determine if the use of local anesthesia with general anesthesia results in less postoperative pain. The alternative hypothesis is that children will experience less postoperative discomfort when utilizing intraligamental local anesthetic during the intra-operative time period. Methods: Patients were recruited for this single blind, randomized, prospective cohort study with the following inclusion criteria: English speaking children age 3-6 years, ASA I/II requiring general anesthesia for dental treatment. Randomization was done to place patients in groups of no local anesthetic vs. local anesthetic administration. A Wong-Baker Faces Pain Scale was utilized to evaluate …

Ada News - 04/09/2012, American Dental Association, Publishing Division

ADA News

Established in 1970 as the official newspaper of the American Dental Association, the ADA News serves practicing dentists and others allied to the dental profession in the U.S. and internationally. It is the No. 1 source of news and information about the many benefits and services the ADA delivers to members daily as well as timely information on scientific, social, political and economic developments affecting dentistry and health care.

Multivitamin Therapy For Recurrent Aphthous Stomatitis, Rajesh V. Lalla, Linda E. Choquette, Richard S. Feinn, Harriet Zawistowski, Marie C. Latortue, Edward T. Kelly

UCHC Articles - Research

Background

Recurrent aphthous stomatitis (RAS) is a painful condition of unknown etiology, affecting more than 2.5 billion people worldwide. Vitamin deficiencies have been implicated as a possible cause.

Methods

The authors conducted a single-center, randomized, parallel-arm, double-masked, placebo-controlled study to examine the effect of daily multivitamin supplementation on the number and duration of RAS episodes. The authors randomly assigned 160 adults who had a validated history of at least three episodes of idiopathic minor RAS within the previous 12 months to one of two groups: the first group (n = 83) received a once-daily multivitamin containing 100 percent of the …

Contact Point, Arthur A. Dugoni School Of Dentistry

Contact Point

No abstract provided.

Loma Linda University Dentistry - Volume 23, Number 1, Loma Linda University School Of Dentistry

Articulator (Dentistry)

Contents:

12 | Class of '62 Cruises Canada
14 | Officer Ships Out
17 | Students Meet State
22 | Desert Dental Hygiene
25 | Interdisciplinary Treatment
29 | Perio Program Celebrates
43 | Dr. Lloyd Baum's Long Shadow

Oral Microbial Biofilm Stimulation Of Epithelial Cell Responses, Rebecca Peyyala, Sreenatha S. Kirakodu, Karen F. Novak, Jeffrey L. Ebersole

Center for Oral Health Research Faculty Publications

Oral bacterial biofilms trigger chronic inflammatory responses in the host that can result in the tissue destructive events of periodontitis. However, the characteristics of the capacity of specific host cell types to respond to these biofilms remain ill-defined. This report describes the use of a novel model of bacterial biofilms to stimulate oral epithelial cells and profile select cytokines and chemokines that contribute to the local inflammatory environment in the periodontium. Monoinfection biofilms were developed with Streptococcus sanguinis, Streptococcus oralis, Streptococcus gordonii, Actinomyces naeslundii, Fusobacterium nucleatum, and Porphyromonas gingivalis on rigid gas-permeable contact lenses. Biofilms, as well as planktonic cultures …

Bonding With Self-Etching Primers – Pumice Or Pre-Etch? An In Vitro Study, Ian J. Fitzgerald, Gerard T. Bradley, Jose A. Bosio, Arthur F. Hefti, David W. Berzins

School of Dentistry Faculty Research and Publications

The purpose of this study was to compare the shear bond strengths (SBSs) of orthodontic brackets bonded with self-etching primer (SEP) using different enamel surface preparations. A two-by-two factorial study design was used. Sixty human premolars were harvested, cleaned, and randomly assigned to four groups (n = 15 per group). Teeth were bathed in saliva for 48 hours to form a pellicle. Treatments were assigned as follows: group 1 was pumiced for 10 seconds and pre-etched for 5 seconds with 37 per cent phosphoric acid before bonding with SEP (Transbond Plus). Group 2 was pumiced for 10 seconds before …

Ada Code Of Ethics (April 2012), American Dental Association

Code of Ethics

The ADA Code of Ethics has three main components: The Principles of Ethics, the Code of Professional Conduct and the Advisory Opinions. Contents may also include: Amendment to ADA Principles of Ethics and Code of Professional Conduct and Insert for the ADA Principles of Ethics and Code of Professional Conduct. The most current issue is available on the ADA’s website.

Effect Of Two Different Implant Structures On Stresses Induced Within The Surrounding Bone Using Three Dimensional Finite Element Analysis, Fardos N. Rizk

Dentistry

objective: The purpose of this study is to compare the stresses induced within the bone surrounding the Trabecular Metal Dental Implant (Zimmer Dental Inc., Carlsbad, CA, USA) in comparison to the stresses induced within the bone surrounding its predicate Tapered Screw Vent Implant (Zimmer Dental Inc., Carlsbad, CA, USA) using three dimensional finite element analysis. materials and methds: The current finite element analysis simulated a clinical situation where an edentulous mandible was restored with an entirely implant supported cantilever bar overdenture retained by five implants placed parallel to each other in the interforaminal region opposed by a complete denture. Two …

Analysis Of Abstracts Presented At The Prosthodontic Research Section Of Iadr General Sessions 2004–2005: Demographics, Publication Rates, And Factors Contributing To Publication, Damian J. Lee, Judy Chia-Chun Yuan, Soni Prasad, Valentim A. R. Barao, Nodesh Shyamsunder, Cortino Sukotjo

School of Dentistry Faculty Research and Publications

Purpose: The purposes of this study were to describe the demographics of abstracts presented at the prosthodontics section of IADR General Sessions from 2004 to 2005, evaluate the publication rate of abstracts, and analyze the relationship between variables in abstracts and publication.

Materials and Methods: Prosthodontics research section abstracts from the IADR General Session in 2004 and 2005 were evaluated for: number of authors, presentation type, origin, affiliation, topic, study design, statistics, study outcome, and funding. The publication rate was calculated following a PubMed search. The journal of publication, year of publication, and the length of time before publication were …

A Comparison Of Torsional Stress Properties Of Three Different Nickel-Titanium Files With Similar Cross-Sectional Design, Reid Wycoff

Master's Theses (2009 -)

The purpose of this study was to compare the in vitro torsional stress characteristics of Twisted Files (SybronEndo, Orange, CA) with two milled files of similar cross section, EndoSequence (Brasseler USA, Savannah, GA) and ProFile Vortex (DENTSPLY Tulsa Dental, Tulsa, OK).

Files of size 25/.06 and 30/.06 from the three file types were compared (n=20/group). Torsional stress resistance was evaluated by measuring the torque in gram-centimeters (g-cm) and angle of rotation (degrees) required for instrument separation with use of a torsiometer instrument. The fractured files were examined using SEM to look at deformation and fracture surface characteristics. The data was …

Comparison Of The Efficacy Of Various Ibuprofen And Acetaminophen Regimens On The Treatment Of Post-Endodontic Pain, Erik Deyoung

Master's Theses (2009 -)

The purpose of this study was to determine the efficacy of taking ibuprofen and acetaminophen at the same time versus alternating the same medications in patients with a diagnosis of symptomatic irreversible pulpitis.

Materials and Methods: Ten patients who presented for root canal therapy with a diagnosis of symptomatic irreversible pulpitis were included in this study. The patients were randomly assigned to 2 groups. Following root canal therapy, the patients in group A were instructed to take ibuprofen 600 mg and acetaminophen 1000 mg every six hours. Patients in group B were instructed to take ibuprofen 600 mg, wait three …

The Effect Of Water Storage On Bending Properties Of Esthetic, Fiber-Reinforced Composite Orthodontic Wires, Ju-Han Chang

Master's Theses (2009 -)

Introduction: The translucent optical property of fiber-reinforced composite wires meets the esthetic demand of orthodontic patients; however, studies need to be conducted to determine if they also have the desired mechanical properties for active orthodontic treatment. The goal of this research was to study the effect of water storage on the mechanical properties of fiber-reinforced composite archwires and compare it to conventional nickel-titanium (NiTi) and stainless steel (SS), and beta-titanium (TMA) archwires. Materials and Methods: Align A, B, C and TorQ A, B from BioMers Products, 0.014", 0.016", 0.018", 0.019" x 0.025" Nitinol Classic (3M Unitek), 0.016" SS, and 0.019 …

Postoperative Pain After The Use Of A Dexamethasone Rinse As An Irrigant Prior To Obturation, Sushant Mahajan

Master's Theses (2009 -)

Purpose: This randomized, single-blind pilot study was to determine the effect of dexamethasone on post-operative pain when used as an intracanal rinse prior to obturation.

Materials and Methods: Ten adult volunteers were enrolled. They presented to the Marquette University School of Dentistry for endodontic treatment and experienced pain from irreversible pulpitis. The patients were randomly assigned to either the control group that received standard of care treatment or the experimental group that received the rinse with 4 mg/mL dexamethasone solution prior to obturation. Before and after treatment, the patients recorded their pain level on the numeric rating scale (NRS). Recordings …

Intra- And Inter-Examiner Reliability And Inter-Method Comparison In Physical Anthropometry And Photogrammetry, Nikolay Mollov

Master's Theses (2009 -)

Objective: Orthodontic treatment can often effect changes in the facial complex. In order to assess what those changes are, precise and reliable methods for measuring facial structures need to be used. While the techniques used for measuring have become increasingly more sophisticated they have also become more expensive and cumbersome for daily use. This study investigated the reliability of two methods, physical anthropometry and photogrammetry, that were inexpensive and relatively easy to set up.

Materials and Methods: Ten examiners measured a sample comprised of 20 dental students (10 male, 10 female) twice over three weeks. Eighteen measurements were acquired directly …

The Effect Of Extracorporeal Shock Wave (Esw) On Cementoblasts In Vitro, Joshua Barta

Master's Theses (2009 -)

Root resorption is an adverse consequence of orthodontic treatment, and currently no effective treatment method exists. Extracorporeal shock wave (ESW) has been applied to enhance angiogenesis, growth and healing of bone, but the effects of ESW on root resorption have not been studied. Cementoblasts are the cells responsible for forming and repairing cementum covering the dental root, and ESW may enhance this reparative process. The purpose of this study was to investigate the effects of ESW on cementoblasts to determine if ESW could potentially be used to treat root resorption. OCCM.30 cementoblasts were prepared in suspension at a density of …

Microaesthetics Of The Smile: Extraction Vs. Non-Extraction, Sanam Tauheed, Attiya Shaikh, Mubassar Fida

Section of Dental-Oral Maxillofacial Surgery

OBJECTIVE: To compare microaesthetics in pre- and post-orthodontic cases, treated with non-extraction and extraction treatment and assessed whether the achieved microaesthetic parameters are comparable to the proposed norms.

STUDY DESIGN: Quasi-experimental study.

PLACE AND DURATION OF STUDY: Orthodontic Clinic, the Aga Khan University Hospital, Karachi, from January 2005 to December 2009.

METHODOLOGY: Orthodontic records of 31 cases treated with non-extraction therapy and 26 cases treated with extraction of upper first premolars were selected. Patients were of Pakistani origin, aged between 12 to 30 years. Microaesthetics was assessed by measuring maxillary central incisor crown width-height ratio, connectors between the maxillary anterior …

Ada News - 03/19/2012, American Dental Association, Publishing Division

ADA News

Established in 1970 as the official newspaper of the American Dental Association, the ADA News serves practicing dentists and others allied to the dental profession in the U.S. and internationally. It is the No. 1 source of news and information about the many benefits and services the ADA delivers to members daily as well as timely information on scientific, social, political and economic developments affecting dentistry and health care.

Pathogenicity Of Treponema Denticola Wild-Type And Mutant Strain Tested By An Active Mode Of Periodontal Infection Using Microinjection, Jacques Izard, Hajime Sasaki, Ralph Kent

Department of Food Science and Technology: Faculty Publications

The available passive mode of periodontal infections in mice requires high efficiency of bacterial attachment and invasiveness and is not always suitable to test the pathogenicity of genetically engineered mutant strains. We developed an active mode of oral infection, using microinjection in the marginal gingiva of mice, to test the pathogenicity of a genetically engineered Treponema denticola mutant strain deficient in intermediate-like filaments, compared to the wild-type strain. This targeted mode of infection inoculates the bacterial strain to be tested directly at a lesion site (needle entry point) located at the future periodontal lesion site. The efficiency of T. …

Ada News - 03/05/2012, American Dental Association, Publishing Division

ADA News

Established in 1970 as the official newspaper of the American Dental Association, the ADA News serves practicing dentists and others allied to the dental profession in the U.S. and internationally. It is the No. 1 source of news and information about the many benefits and services the ADA delivers to members daily as well as timely information on scientific, social, political and economic developments affecting dentistry and health care.

An Update On Practice Management Instruction In U.S. Dental Schools, David G. Dunning, Wenyu Qu, Brian M. Lange

Journal Articles: College of Dentistry

Over the last twenty-seven years, the evaluation of practice man- agement in dental schools has been documented by three studies. In twenty-seven years the teaching of practice management has been influenced by changes in the definition of practice manage- ment, resources available to dental schools, technology, changes in accreditation standards and, more recently, the influence of corpora- tions marketing to dental students. In an effort to determine what resources dental schools are utilizing to teach practice management, fifty-seven schools were contacted, and fifty faculty members with teaching responsibilities were identi- fied. An on-line email survey was administered and results reported …

New Dentist News (March 2012), Ada Committee On The New Dentist

New Dentist News

New Dentist News offers timely information on scientific, social, educational, political and economic developments affecting new dentists. This collection is historical and items may not reflect current standards. For up-to-date information contact the ADA. The New Dentist News was alternately titled ADA Lifeline, 1997-June 2001.

J Am Coll Dent 2012 79 1

Journal of the American College of Dentists

The Journal of the American College of Dentists (JACD) publishes scholarly articles, editorials, essays, and reflections addressing the ethical, professional, and social dimensions of dentistry. The Journal serves as a forum for advancing ethics, professionalism, leadership, and excellence within the dental community. By fostering dialogue across disciplines and perspectives, JACD provides readers with insights that encourage ethical, professional practice, lifelong learning, and service to the public, reinforcing dentistry’s commitment to advancing oral healthcare and the common good.

Shining A New Light On Selective Polishing, Caren M. Barnes

College of Dentistry: Faculty Publications

The era of selective polishing is over. Polishing is an integral procedure provided by dental hygienists. Patients look forward to the resultant smooth, clean feeling, and dental hygienists must ensure that all patients are polished according to their individual needs—ensuring the safety of their teeth and restorations.

Comparison Of Steriplex™ Hc And Sodium Hypochlorite Cytotoxicity On Primary Human Gingival Fibroblasts, Jesse Harris

Theses and Dissertations

This study examined the cytotoxic effects of STERIPLEX™ HC (sBioMed, Orem, UT) and sodium hypochlorite (NaOCl) on human fibroblast cells in vitro. Fibroblasts exposed to various concentrations of NaOCl or STERIPLEX™ HC were visualized via light microscopy. Dilutions of either NaOCl or STERIPLEX™ HC that did not appear to disrupt the integrity of the cells were recorded for further analysis. Cells were then cultured and grown to confluence in five separate plates. A void was created down the middle of each plate. If the cells were viable, cellular confluence was seen. If nonviable, confluence of the cells did not occur. …