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Articles 61 - 69 of 69
Full-Text Articles in Orthodontics and Orthodontology
Importance Of Pumice Prophylaxis For Orthodontic Bonding With Self-Etch Primer: An In Vivo Study, Daniel J. Lill
Importance Of Pumice Prophylaxis For Orthodontic Bonding With Self-Etch Primer: An In Vivo Study, Daniel J. Lill
Theses and Dissertations
Self-etching primers (SEP) have recently simplified the orthodontic bonding process and questions have arisen regarding their reliability and efficiency. The goal of this study was to assess the importance of a pumice prophylaxis prior to bonding with SEP (Transbond Plus, 3M Unitek, Monrovia, CA) in reducing bond failures. Thirty orthodontic patients volunteered to participate in this split-mouth prospective clinical trial. A pumice prophylaxis experimental group and a non-pumice control group of teeth were randomly assigned in a contralateral quadrant pattern within each patient. A total of 508 teeth were bonded and monitored over 3 months for bond failures. There were …
Overbite Correction And Smile Esthetics, Sherif Nabil Elhady
Overbite Correction And Smile Esthetics, Sherif Nabil Elhady
Theses and Dissertations
The purpose of this prospective clinical study was to investigate differences in outcomes from two common treatment modalities used to reduce deep overbite: maxillary incisor intrusion using an intrusion arch and posterior tooth eruption using an anterior bite plate and to assess their influence on smile esthetics. Pre-treatment and post-overbite correction records were gathered from 40 patients with deep overbite malocclusions at the Virginia Commonwealth University orthodontic clinic. Intrusion arch patients displayed significant reductions in maxillary incisor display accompanying documented incisor intrusion. Bite plate patients showed significant lower incisor intrusion and increases in the mandibular plane angle. When compared to …
Bonding Properties Of Newly Erupted And Mature Human Premolars, Diana Marie-Skinner Almy
Bonding Properties Of Newly Erupted And Mature Human Premolars, Diana Marie-Skinner Almy
Theses and Dissertations
Following eruption of a tooth into the oral cavity, enamel is thought to continue to calcify. The continued calcification and maturation of enamel is described as "post-eruptive enamel maturation." It is believed that an observed decrease in enamel pore size and increase in the calcification of enamel matrix over time can be attributed to this process. In recent years, there has been a significant increase in the number of adult patients seeking orthodontic treatment. Since orthodontic attachments are bonded directly to the etched enamel using composite resin, post-eruptive enamel maturation may affect the bonding process. The purpose of this study …
Overbite Correction And Smile Esthetics, Shannon Michelle Lewis
Overbite Correction And Smile Esthetics, Shannon Michelle Lewis
Theses and Dissertations
Achievement of optimum smile esthetics during orthodontic treatment has recently been the focus of several published articles in the orthodontic literature. Authors speculate that overbite correction, specifically maxillary incisor intrusion, will lead to flattening of the smile arc and consequently reduce smile attractiveness. The purpose of this prospective clinical study was to investigate differences in outcomes from two common treatment modalities used to reduce deep overbite: maxillary incisor intrusion using an intrusion arch and posterior tooth eruption using an anterior bite plate. Pre-treatment and post-overbite correction records were gathered from 20 patients who presented with deep overbite malocclusions to the …
Factors Influencing Applicant Ranking Of Orthodontic Programs, Michael D. Payne
Factors Influencing Applicant Ranking Of Orthodontic Programs, Michael D. Payne
Theses and Dissertations
Orthodontic programs spend considerable amounts of time and energy to attract, recruit, and interview the best and brightest applicants. Applicants and programs submit ranked preferences, and resident positions are filled by a computerized matching system (Match). The specific aims of this study were to determine the relative importance of certain factors in applicants' Match ranking of orthodontic programs and to determine differences between orthodontic Program Directors perceptions and actual factors cited by applicants influencing their ranking of orthodontic programs.Surveys were mailed to 55 orthodontic Program Directors and 478 applicants participating in the 2002 orthodontic Match. Forty-nine Program Director (89%) and …
Appointment Keeping Behavior Of Medicaid Vs. Non-Medicaid Orthodontic Patients, Bryan P. Horsley
Appointment Keeping Behavior Of Medicaid Vs. Non-Medicaid Orthodontic Patients, Bryan P. Horsley
Theses and Dissertations
State Medicaid programs were established to care for the poor by eliminating financial barriers and increasing their ability to be treated within the mainstream of the heath care system. The number of children eligible for Medicaid services is increasing, yet the number of Medicaid providers remains low. Health care providers cite failed appointments as being a major problem with Medicaid patients and one of the largest deterrents to participating. The purpose of this study was to determine whether a difference in appointment keeping behavior exists between Medicaid and non-Medicaid orthodontic patients. During a twelve-month period, a tally of appointments was …
Orthodontic Faculty Recruitment And Retention: Goals And Perceptions, Sheldon L. Peck
Orthodontic Faculty Recruitment And Retention: Goals And Perceptions, Sheldon L. Peck
Theses and Dissertations
There is a shortage of faculty in academic dentistry and orthodontics in particular. The purpose of this study was to quantify real and perceived differences in income, workload, and satisfaction between full-time academic and private practice orthodontists. Surveys were returned by 119 (70%) faculty, 79 (36%) private practitioners, and 160 (59%) orthodontic residents. Average annual income for faculty was less than half that of private practitioners. Faculty also reported working significantly more hours per week and taking less vacation time. Though both faculty and practitioners perceived their own jobs to be more satisfying overall, faculty felt academics was more stressful, …
Measurement Of Forces And Moments In Three-Dimensional Archwires, Dwight Van Buelow
Measurement Of Forces And Moments In Three-Dimensional Archwires, Dwight Van Buelow
Theses and Dissertations
AbstractMEASUREMENT OF FORCES AND MOMENTS IN THREE-DIMENSIONAL ARCHWIRESBy Dwight V. Buelow, 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: Steven J. Lindauer, D.M.D., M.D.Sc.Chairman and Professor, Department of OrthodonticsOrthodontic tooth movement occurs in response to the application of controlled mechanical force systems. The purpose of this study was to improve understanding of those force systems by evaluating differences between the resultants of two-dimensional and three-dimensional orthodontic appliance activations. An in-vitro model was constructed and three force-moment gauges were used to measure the forces and …
Lip Profile Preferences In Varying Sagittal Mandibular Positions, Grant Gordon Coleman
Lip Profile Preferences In Varying Sagittal Mandibular Positions, Grant Gordon Coleman
Theses and Dissertations
The purpose of this study was to determine the influence of sagittal mandibular position on preferred lip position in profile. Five androgynous silhouette profiles differing only in the degree of mandibular retro- or prognathism (-25º, -18º, -11º, -4º, & +3º facial contour angles) were created. Using a computer animation program, evaluators moved the lips independently into the position deemed to be the most esthetic for each profile. Evaluators included adolescent orthodontic patients, parents of patients, and orthodontists. In general, no differences in preferred lip position were found between the 11º & -4º profiles or between the 18º & +3º profiles, …