Orthodontic Treatment Planning Using Direct Visual Approximation Of Arch Length Discrepancy And Cephalometric Analyses,
2018
Marquette University
Orthodontic Treatment Planning Using Direct Visual Approximation Of Arch Length Discrepancy And Cephalometric Analyses, Kathleen Rouse Vaught
Master's Theses (2009 -)
Introduction: Space analysis and radiographic analyses are crucial elements in developing an orthodontic treatment plan. It is imperative that the orthodontist makes accurate measurements in order to come up with the most effective treatment options for each patient. Some practitioners refrain from direct measurements to determine arch length discrepancies and instead determine the amount of crowding by using direct visual approximation. In addition, more orthodontists do not routinely trace all cephalograms taken. If more and more orthodontists are using direct visual approximation to determine angular cephalometric measurements, it is important to assess the accuracy and reliability of these measurements. This …
Comparison Of Immediate Vs. Delayed Recall Of Orthodontic Information Following An Electronic Reminder,
2018
Marquette University
Comparison Of Immediate Vs. Delayed Recall Of Orthodontic Information Following An Electronic Reminder, Michael Lenz
Master's Theses (2009 -)
Patients and parents in dentistry often do not remember important information disclosed during the informed consent process, so improvement in the delivery of information is needed. This study explored the effect of an emailed narrated instructional PowerPoint on the immediate vs. delayed recall and comprehension of informed consent information in orthodontics. Thirty-two subjects were recruited from a university and private practice orthodontic clinic. At the initial visit, subjects were alternately assigned to one of two groups and were presented with a mock orthodontic treatment plan and informed consent presentation for a pretend patient. Immediately following the presentation, the subjects’ verbal …
Orthodontic Open-Coil Spring Deactivation Forces Differ With Varying Activation Levels,
2018
Marquette University
Orthodontic Open-Coil Spring Deactivation Forces Differ With Varying Activation Levels, Ryan Lubinsky
Master's Theses (2009 -)
Coil springs are used in orthodontics to deliver forces to move teeth. However, the optimal amount of activation to produce predictable, continuous deactivation forces, for the purpose of orthodontic tooth movement, is unclear. The purpose of this study was to evaluate the deactivation force characteristics of nickel-titanium open-coil springs after varying levels of activation. Methods: Four open-coil spring products were evaluated: Dentsply GAC 100 gram and 150 gram, Orthoclassic Orthodontics Medium 150 gram, and American Orthodontics nickel-titanium springs. Open-coil springs were compressed (activation) with a universal testing machine to 20, 40, 60, or 80% of original length (15 mm; n=15/product/activation …
Orthodontic Bond Strength Comparison Between Two Filled Resin Sealants,
2018
Marquette University
Orthodontic Bond Strength Comparison Between Two Filled Resin Sealants, James Kolstad
Master's Theses (2009 -)
Introduction: Sealants are used in orthodontics to help prevent demineralization during treatment. The objective of this study was to determine if there is a difference in the shear bond strength (SBS) between two different resin sealants bonded to teeth. Materials and Methods: Extracted human premolars (n=20/group) were randomly divided and prepared by acid etching, followed by application of primer or sealant. Group 1, the control group, used Transbond XT Primer (3M Unitek). Groups 2 and 3 were prepared with the sealants L.E.D. Pro Seal (Reliance Orthodontic Products) and Opal Seal (Opal Orthodontics) respectively. Transbond XT Adhesive was applied to a …
Application Of Mechanical Vibration To Enhance The Stability After Orthodontic Treatment - A Micro - Ct Study,
2018
Marquette University
Application Of Mechanical Vibration To Enhance The Stability After Orthodontic Treatment - A Micro - Ct Study, Nicolas Branshaw
Master's Theses (2009 -)
Introduction: Mechanical vibration (MV) possesses anti-resorptive properties that can possibly enhance the stability of the dentition during retention, lessening the potential for relapse of teeth to their initial positions. In this project, we established a mouse model and investigated the effects of MV on bone modeling during orthodontic retention. Materials and Methods: Thirty-two 14-week-old inbred strain C57BL/6 male mice were randomly assigned into four groups: 1) Control (N=6); 2) Mechanical Vibration (MV) (N =6); 3) Orthodontic Retention (OR) (N=9); and 4) Orthodontic Retention and Mechanical Vibration (ORMV) (N=11). All mice in OR and ORMV groups received approximately 10g of orthodontic …
Effect Of Folate On Endoplasmic Reticulum Stress Caused By Hypoxia,
2018
University of the Pacific
Effect Of Folate On Endoplasmic Reticulum Stress Caused By Hypoxia, Paul Kim, Shub Dhillon, Mahsa Mortazavi, Marie M. Tolarova, Mirek Tolar
Excellence Day
Endoplasmic reticulum (ER) stress is involved in the pathogenesis of congenital cardiac defects, intrauterine growth restriction, craniofacial anomalies, and many common diseases. The purpose of this study was to test if folic acid (FA) can mitigate ER stress or improve recovery of cells from ER stress.
Changes In Airway Volume In Adult Patients Following Orthodontic Treatment With Premolar Extractions Versus Non-Extraction,
2018
University of the Pacific
Changes In Airway Volume In Adult Patients Following Orthodontic Treatment With Premolar Extractions Versus Non-Extraction, Sunny Jisun Lee, Allison Kawata, Hayoung Michael Shin, David Chambers, Joorok Park, Heesoo Oh
Excellence Day
Recent concerns about the prevalence of obstructive sleep apnea (OSA) and its negative sequelae have led to investigations of how manipulation of the dentofacial complex may affect airway problems. CBCT can be used to measure airway dimensions of patients. Extraction of premolars is indicated as part of orthodontic treatment for patients who have severe crowding or protrusion of incisors. Some have suggested that the reduction in arch circumference after premolar extraction would lead to decreased airway volume, which may predispose a patient for sleep disordered breathing (SDB). The purpose of this study was to determine whether there is a significant …
Changes In Cephalometric Measurements In Adult Patients Following Orthodontic Treatment With Premolar Extractions Versus Non-Extraction,
2018
University of the Pacific
Changes In Cephalometric Measurements In Adult Patients Following Orthodontic Treatment With Premolar Extractions Versus Non-Extraction, Byron Chou, David Dang, Adrienne Joy, David Chambers, Joorok Park, Heesoo Oh
Excellence Day
Extraction of premolars is indicated as part of orthodontic treatment for patients who have severe crowding or protrusion of incisors. CBCT can be used to locate cephalometric landmarks in 3D. The purpose of this study was to determine whether there are differences in sagittal, transverse, and vertical skeletal and dental dimensions for adult patients who were treated with premolar extractions in conjunction with orthodontic treatment compared to those who received orthodontic treatment without extractions.
Condylar Degeneration In Patients With Dental Open Bite Versus Skeletal Open Bite Utilizing Cbct,
2018
University of the Pacific
Condylar Degeneration In Patients With Dental Open Bite Versus Skeletal Open Bite Utilizing Cbct, Alex Rauchle, Alston Trinh, Linda Phi, Brad Albertson, Joorok Park, Heesoo Oh
Excellence Day
Idiopathic condylar resorption (ICR) is a condition in which either one or both condyles undergo degeneration. Bilateral TMJ involvement presents as a clockwise rotation of the mandible in the posterior-inferior direction, resulting in an anterior open bite. The purpose of the study was to assess TMJ condylar degeneration in dental open bites compared to skeletal open bites.
Two-Phase Management In A Developing Class Iii Malocclusion With The Aid Of Rapid Maxillary Expander And Facemask,
2018
Department of Orthodontics, Changhua Christian Hospital, Taiwan
Two-Phase Management In A Developing Class Iii Malocclusion With The Aid Of Rapid Maxillary Expander And Facemask, Chih-Hsiang Chan, Chin-Yun Pan, Jung-Hsuan Cheng
Taiwanese Journal of Orthodontics
A 7-year 10-month-old boy with skeletal Class III malocclusion was treated in two phases. In phase one, rapid maxillary expansion (RME) and facemask was applied for early intervention in a cervical vertebral maturation (CVM) stage of CS2. After RME and facemask treatment, decompensation of maxillary and mandibular incisors was noted, as well as an improved skeletal Class III jaw relationship with reduction of the A point-nasion-B point (ANB) angle. Later in phase two, a full mouth fixed edgewise appliance was begun to correct the details of malocclusion. The total treatment duration was 5 years and 5 months (stage 1, 9 …
Skeletal, Dentoalveolar, And Periodontal Changes Of Skeletally Matured Patients With Maxillary Deficiency Treated With Microimplant‐Assisted Rapid Palatal Expansion Appliances: A Pilot Study,
2018
West Virginia University
Skeletal, Dentoalveolar, And Periodontal Changes Of Skeletally Matured Patients With Maxillary Deficiency Treated With Microimplant‐Assisted Rapid Palatal Expansion Appliances: A Pilot Study, Peter Ngan, Uyen Kelly Nguyen, Tung Nguyen, Timothy Tremont, Chris Martin
Faculty & Staff Scholarship
Introduction: Microimplant‐assisted rapid palatal expansion (MARPE) has recently been offered to adult patients for correcting maxillary transverse deficiency. However, there is limited information in the literature on the success of this appliance and its skeletal and dental effects on skeletally matured patients. The purpose of this study was to investigate the immediate skeletal, dentoalveolar, and periodontal response to MARPE appliance using cone‐beam computed tomography in a skeletally matured patient as assessed by the cervical vertebral maturation method. Materials and Methods: Eight consecutively treated patients (2 females, 6 males; mean age of 21.9 ± 1.5 years) treated with a maxillary skeletal …
Maxillary Expansion: From Past To Present,
2018
Department of Orthodontics, Dental Clinics, Kaohsiung Medical University Hospital, Kaohsiung Taiwan
Maxillary Expansion: From Past To Present, Shih-Chieh Chen, Hong-Po Chang, Yu-Chuan Tseng
Taiwanese Journal of Orthodontics
Maxillary expansion is a common treatment option for upper crowded dentition and posterior lingual crossbite in children and adolescents. As the midpalatal suture is not yet completely interlocked at these ages, the midpalatal suture can be opened via maxillary expansion to increase the length and width of the upper arch. This solves the problems of posterior crossbite and upper crowded dentition. Since the midpalatal suture is stiff in adults, many clinicians believe that adults require surgical intervention to achieve maxillary expansion. However, recent reports indicated that several cases have been treated successfully with the aid of TADs for maxillary expansion. …
Correction Of Bimaxillary Protrusion By Extraction Of Incisors And Canine Substitution,
2018
Department of Orthodontics, Chi Mei Medical Center, Tainan City, Taiwan
Correction Of Bimaxillary Protrusion By Extraction Of Incisors And Canine Substitution, Chung-Li Wang, Chun-Liang Kuo, I-Hua Liu, Chun-Hsiu Yang
Taiwanese Journal of Orthodontics
The maxillary six anterior teeth play important roles in esthetics and oral function. Treatments for missing maxillary lateral incisors either by space closure or space preservation need multiple clinical considerations. This case report presents an orthodontic treatment of a 33-year-old female patient who had a convex profile with lip incompetence, missing lower molars and poor prognosis of bilateral maxillary lateral incisors. The atypical extraction in treatment plan consisted of removing lateral incisors instead of premolars to retract the anterior teeth. The improvement of facial profile and lip posture was achieved and the anterior teeth esthetics was further rehabilitated with prosthesis. …
Management Of Tipped And Impacted Mandibular Second Molars,
2018
Orthodontic Department, Chung Shan Medical University Hospital, Taichung, Taiwan; School of Dentistry, College of Oral Medicine, Chung Shan Medical University, Taichung, Taiwan
Management Of Tipped And Impacted Mandibular Second Molars, Jung-Chun Yeh, Chien-Wei Chao, Yu-Tin Wu, Chih-Chen Chou, Chia-Tze Kao
Taiwanese Journal of Orthodontics
Congenitally missing of maxillary lateral incisor is one of the most common agenesis anomalies. The purpose of this review was to present the orthodontic treatment of choice for a malocclusion with missing maxillary lateral incisors. Treatment plans consi
Cephalometric Analysis Of Growth And Treatment With The Structural Technique: A Review Of Its Background And Clinical Application,
2018
Clinical Professor (Emeritus), Orofacial Sciences, Division of Orthodontics, University of California, San Franciso, USA
Cephalometric Analysis Of Growth And Treatment With The Structural Technique: A Review Of Its Background And Clinical Application, Ib Leth Nielsen
Taiwanese Journal of Orthodontics
The aim of this review is to provide the fundamental basis and scientific evidence for the so-called “structural technique.” In this article we will discuss the benefits and challenges of this technique as well as present and compare it to the so-called “best fit” technique. Furthermore, we will introduce the three parts of the analysis, most commonly used for evaluation of growth and treatment changes. The “structural technique” developed by Professor Arne Björk and his associate Dr. Vibeke Skieller is the result of their longitudinal studies using metallic implants as biological markers. These studies showed that most of the information …
Do We Really Know Where The Molar Teeth Are On The Lateral Headfilm? A Recommendation For A More Precise Way To Locate The Molars On The Lateral Headfilm,
2018
Clinical Professor (Emeritus), Orofacial Sciences, Division of Orthodontics, University of California, San Franciso, USA
Do We Really Know Where The Molar Teeth Are On The Lateral Headfilm? A Recommendation For A More Precise Way To Locate The Molars On The Lateral Headfilm, Ib Leth Nielsen, Chung-Chen Jane Yao
Taiwanese Journal of Orthodontics
Objective: The aim of this study demonstrates an improved method for determining the exact molar positions on the lateral headfilm. Previously this position was located by visual inspection of the headfilm. We are testing the precision of visual determination compared to using occlusogram measurements. Materials and Methods: In a sample of 34 subjects treated for Class II malocclusion, we examined the pre and post treatment headfilms and compared molar positions determined by visualization with occlusogram measurements. Results: Our data showed that in 15% of the cases there were no differences between the two methods, in 50% the differences were 1 …
Application Of Combined Maxillary Skeletal Expander And Facemask Treatment With An Alternating Rapid Maxillary Expansion And Constriction Protocol In A Female Adolescent With A Class Iii Skeletal Relationship,
2018
Division of Orthodontics and Dentofacial Orthopedics, Department of Dentistry, National Taiwan University Hospital; Department of Orthodontics, Taipei Mackay Memorial Hospital
Application Of Combined Maxillary Skeletal Expander And Facemask Treatment With An Alternating Rapid Maxillary Expansion And Constriction Protocol In A Female Adolescent With A Class Iii Skeletal Relationship, Li-Fang Hsu, Kai-Wen Yu, Chung-Ji Liu, Jenny Zwei-Chieng Chang
Taiwanese Journal of Orthodontics
A 13-year-old female patient presented with a chief complaint of anterior crossbite and chin prognathism. She had a skeletal Class III relationship with a brachyfacial vertical pattern. Anterior crossbite exhibited maximum intercuspation–centric relation shift, leading to an edge to-edge incisal position. On the basis of this patient’s chronological age, it was too late to perform conventional early treatment of Class III cases, which includes rapid palatal expansion combined with facemask or chincap therapy. After discussing treatment options with the patient and her parents, we decided to try combined maxillary skeletal expander and facemask treatment with an alternating rapid maxillary expansion …
Correction Of 2 Impacted Dilacerated Maxillary Central Incisors With Collaborative Surgical And Orthodontic Treatment,
2018
Department of Orthodontics, Dental Clinics, Kaohsiung medical university Hospital, Taiwan
Correction Of 2 Impacted Dilacerated Maxillary Central Incisors With Collaborative Surgical And Orthodontic Treatment, Yi-Hsin Chang, Jung-Hsuan Cheng
Taiwanese Journal of Orthodontics
Impaction in maxillary central incisor is not as common in comparison with maxillary canine, whereas it causes more occlusal and esthetic impact due to its visible location. This case reported a combined surgical and orthodontic treatment on two horizontally impacted maxillary central incisors with dilacerated roots. The treatment included 2 stages. In the first stage, the dental space was regained and surgical exposure with closed eruption technique was applied. In the second stage, excisional gingivectomy combined with orthodontic traction were used to reposition both teeth into alignment. During orthodontic treatment, transpalatal arch (TPA) was applied for intraoral anchorage. The maxillary …
Curve Of Spee: Development And Orthodontic Leveling,
2018
School of Dentistry, College of Dental Medicine, Kaohsiung Medical University; Department of Orthodontics, Dental Clinics, Kaohsiung Medical University Memorial Hospital
Curve Of Spee: Development And Orthodontic Leveling, Yu-Hsin Lee, Yu-Chuan Tseng
Taiwanese Journal of Orthodontics
Curve of Spee (CoS) is characterized as human occlusal curvature viewed in the sagittal plane. This naturally occurring phenomenon has clinical importance in orthodontics and prosthodontic dentistry. The purpose of this article is to examine the formation of the CoS regarding of when, how, or why the CoS develops. The mechanism of orthodontic leveling the CoS will be discussed.
Effect Of Home Bleaching Agents On The Surface Corrosion Of Stainless Steel Orthodontic Brackets,
2018
Department of Orthodontics, Changhua Christian Hospital, Changhua, Taiwan; School of Dentistry, Chung Shan Medical University, Taichung, Taiwan
Effect Of Home Bleaching Agents On The Surface Corrosion Of Stainless Steel Orthodontic Brackets, Tzu-Hsin Lee, Chih-Yuan Wang, Po-Yu Yang
Taiwanese Journal of Orthodontics
Introduction: This in vitro study evaluates the home bleaching treatment effect on the surface corrosion of stainless steel orthodontic brackets. Materials and Methods: Three types of brackets, 3M Unitek (U), Dentaurum (D) and Tomy (T), were immersed in either one of six bleaching treatments at 37 ℃ for 28 days. After immersion, the amounts of iron, chromium, and nickel ions released from the brackets were detected using inductively coupled plasma mass spectrometry (ICP-MS). A scanning electron microscope and an atomic force microscope were used to analyze the surface morphology and roughness, respectively. Two-way ANOVA and Tukey’s post-hoc, α = 0.05, …
