Cephalometric And Dental Changes Observed In Deep Overbite Correction Using Clear Aligners, Valerie Hernandez-Blouin

Orthodontics and Endodontics Theses

Introduction: The objective of this study was to investigate the cephalometric and dental changes observed in nongrowing, deep overbite patients of varying mandibular planes treated with Invisalign® (Align Technology, San Jose, CA). Methods: This retrospective study included 51 patients (27 females and 24 males, aged 33.01 ± 14.74; initial overbite of 4.6 ± 0.83 mm; average treatment period of 1.89 ± 0.85 years; average refinements of 2 ± 1.51). The sample was consecutively treated at the University of the Pacific Resident Orthodontic Clinic and one private practice from 2014-2023. The sample was further divided into 2 groups: patients with an …

Assessing Treatment Effects Of Invisalign First Compared To Maxillary Expanders And Fixed Appliances In Mixed Dentition Patients, Parisa Moravedje Torbaty

Orthodontics and Endodontics Theses

Objectives: This retrospective cohort study compared vertical and transverse changes in mixed dentition patients treated with Invisalign First System (IFS) to those treated with rapid maxillary expansion and fixed appliances (RME), as well as control groups. We also assessed the efficiency of dental arch expansion with IFS. Methods: The study included 80 mixed dentition patients, with 40 in each group (IFS and RME) and 40 controls from the AAOF Legacy Collection. We analyzed skeletal and dental vertical dimension changes from lateral cephalometric radiographs and arch width changes on study casts between pre-treatment (T1) and post-treatment (T2). Results: Age at T1, …

Class Ii Malocclusion Correction With Invisalign: A Retrospective Study, Stacey Moon

Orthodontics and Endodontics Theses

Objectives: This study aimed to examine the treatment outcome of correcting class II malocclusion with maxillary molar distalization using clear aligners in both growing and nongrowing patients. Material and Methods: Total of 42 patients (31 growing and 11 non-growing) who underwent non-extraction clear aligner therapy with maxillary molar distalization were selected and compared to 20 subjects who did not undergo orthodontic treatment were selected from American Association of Orthodontists Foundation (AAOF) legacy collection. Thirteen cephalometric measurements and molar relationships on the digital casts at pre-treatment (T1), end -of-active-treatment (T2) for the treatment group (growing and non-growing) and control group were …

3-D Automated Landmark Identification On Cone-Beam Computed Tomography Using In Vivo: Accuracy And Reliability, Young-Eun Stephanie Jung

Orthodontics and Endodontics Theses

Objectives: The aim of this study was to assess the accuracy and reliability of a fully automated landmark identification (ALI) system in automatically locating landmarks, in comparison to assessments made by human judges. Materials and Methods: We collected a total of 76 cone-beam computed tomography (CBCT) images. Following a calibration process, two human judges utilized In Vivo7 Software (Anatomage, San Jose, California) to locate 31 landmarks in the x, y, and z coordinate planes on the CBCT images. A ground truth dataset was created by averaging the landmark coordinates identified by the two human judges for each landmark. The accuracy …

Clinicians’ Judgment To Recommend Phase I Mixed Dentition Treatment, Yidi Liu

Orthodontics and Endodontics Theses

The timing and necessity of Phase I mixed dentition treatment in orthodontics have long been subjects of debate. This study aims to explore the level of agreement among clinicians in recommending Phase I treatment, the rationales behind such decisions, and the implications for Phase II treatment. MATERIALS and METHODS: A series of three surveys were administered to faculty members at the University of the Pacific, focusing on various aspects of Phase I and Phase II treatments. RESULTS: The study found a mild level of agreement among clinicians in recommending Phase I treatment, with transverse issues being the most cited reason. …

Nasoalveolar Molding In Unilateral Cleft Lip And Palate: A Three-Dimensional Analysis, Yoon Weon Christina Suh

Orthodontics and Endodontics Theses

Objectives: This study aimed to three-dimensionally analyze the effects of pre-surgical nasoalveolar molding in unilateral cleft lip and palate patients. Methods: The sample was collected from three centers and consisted of 132 digital dental casts of patients pre- and post- NAM. Landmarks and measurements were identified on each cast and the changes from pre- to post-NAM were recorded and analyzed. Results: Post-NAM, we observed a mean decrease of 5.18mm in 3D cleft width, 1.78mm decrease in sagittal cleft gap, 1.34mm decrease in the anterior arch width, 2.27mm increase in the posterior arch width, a greater inward rotation of the greater …

Utilization Of Intraoral Scanners For Fabrication Of Obturators For Patients Born With Cleft Lip/ Palate (Clp), Swara Fadnis

Theses and Dissertations

Objective: The goal of this cross-sectional study was to assess the knowledge and attitude of providers regarding incorporating a digital scanner for impression taking in children born with cleft lip and/or palate (CLP). Methods: A survey was sent out to members of the American Association of Pediatric Dentistry (AAPD). The survey included questions regarding the providers’ perception of incorporating digital intraoral scanners for impressions for fabrication of obturators. The survey also included questions about the providers’ reservations in using this technology in practice, what their experience has been with the incorporation of this technology into practice, and what is …

A Six-Month Comparison Of Orthodontic Pain Associated With Fixed Edgewise Appliances And Clear Aligners, Victor Chan

Theses and Dissertations

Title: A Six-Month Comparison of Orthodontic Pain Associated with Clear Aligners and Fixed Edgewise Appliances

Objective: To document and compare pain perception, intensity, and analgesic use over a sixmonth period between patients treated with fixed appliances (FA) and clear aligners (CA).

Methods: A prospective, parallel, two-arm, multi-center, longitudinal cohort study was conducted with 87 adults treated with CA (n=59) or FA (n=28). Subjects were selected according to inclusion and exclusion criteria. A seven-item, digital survey was sent at three timepoints (preappointment, 2-days post-appointment, and 7-days post-appointment) at each adjustment over a six-month period. The variables measured included pain experience, pain …

The Relationship Between The Expression Of Stromal Cell Derived Factor-1 (Sdf-1) And Regional Acceleratory Phenomenon (Rap) In Orthodontic Tooth Movement After Tooth Extraction In Rats Model, Duangtawan Rintanalert

Chulalongkorn University Theses and Dissertations (Chula ETD)

The stromal cell-derived factor 1 (SDF-1)/chemokine receptor type 4 (CXCR4) axis plays a key role in alveolar bone metabolism during orthodontic tooth movement (OTM). Herein, the effects of the SDF-1/CXCR4 axis on the regional acceleratory phenomenon (RAP) in OTM velocity and on changes in the surrounding periodontium after adjacent tooth extraction in rats were investigated. Six-week-old male Wistar/ST rats underwent left maxillary first molar (M1) extraction and mesial OTM of the left maxillary second molar (M2) with a 10-g force closed-coil spring. Phosphate-buffered saline, immunoglobulin G (IgG) isotype control antibody, or anti-SDF-1 neutralizing monoclonal antibody were injected at the M1 …

Dental And Oral Manifestations Of Rheumatoid Arthritis: Is It Related To General Disease Activity?, Omnia A. Abubakr, Ali M Youssef, Mohamed A Mohamed, Mohamed A Hamdy

Journal of Medicine in Scientific Research

Background: RA is a chronic immune-mediated systemic disorder; its pathogenesis is complex. Genetic, environmental, hormonal, and lifestyle are the main risk factors. The correlation between oral health and RA is rising. Oral manifestations in RA include temporomandibular joint disorder, secondary Sjögren’s syndrome, xerostomia, and periodontal disease. Previous studies suggest a bidirectional relationship between RA and periodontal diseases. This study aims to detect oral mucosal and dental disease in RA patients and its relation to demographic features, disease activity, and extra-articular manifestation. Patients and Methods: This cross-sectional study included 150 patients with RA allocated into two groups, 75 patients in each …

Assessment Of The Effect Of Chin Augmentation With Hyaluronic Acid Filler On Facial Soft Tissues Using Lateral Cephalometric Radiograph, Noha Ibrahim Abdelrahman Professor, Islam Hassan Prof.

Dentistry

Aim: To assess the effect of chin augmentation using Hyaluronic acid filler on facial soft tissues using lateral cephalometric radiographs. Material and methods: Prospective case series. 10 adult female patients with mild chin deficiencies. Patients underwent chin augmentation using Restylane Defyne hyaluronic acid dermal filler. Each patient received 2ml Filler injected in the chin area. Lateral cephalometric radiographs were taken at three-time intervals for each patient. The first radiograph taken before augmentation procedure, second radiograph two weeks after filler injection and the third and final radiograph taken six months after the augmentation procedure. Two readings were used to assess the …

Evaluation Of The Effect Of Platelet-Rich Plasma Versus Platelet-Rich Fibrin On The Rate Of Tooth Movement Duringa Lignment Of Mandibular Anterior Crowding, Noha Ibrahim Abdelrahman Professor

Dentistry

Aim: To evaluate the efficiency of Platelet Rich Plasma vs. Platelet Rich Fibrin on overall leveling and alignment time of mandibular anterior crowding. Subjects and methods: Thirty-six females (18-25 years) with mandibular anterior crowding were randomly allocated into PRP, PRF, or control groups. The first molars on the right and left sides of the mandible were banded or bonded with Roth prescription tube. Mandibular teeth Second premolar to the second premolar were bonded using 0.022-inch pre-adjusted edgewise mini diamond brackets with Roth prescription. Immediately after bonding of the brackets, the initial wire used, the wire sequence was 0.014 Cu-Ni followed …

Effect Of Low-Level Laser On Miniscrew Displacement During Canine Retraction: A Randomized Controlled Clinical Trial, Aly Osman, Nadia El Harouni, Mohamed Shokry

International Arab Journal of Dentistry

Background: Anchorage is an important consideration for successful orthodontic treatment. Skeletal anchorage by miniscrews provided better anchorage control then the ordinary extra-oral and intra-oral appliances. However, the stability of the miniscrews is still questionable since they might move under orthodontic loading.

Objectives: The aim of this study was to evaluate the effect of Low Level Laser on the miniscrew displacement when subjected to orthodontic force during canine retraction using CBCT.

Methods: Twelve patients who required bilateral extraction of upper first premolar and absolute anchorage were recruited from the outpatient clinics of the Department of Orthodontics, Faculty of …

Assessment Of Mandibular Cortical Bone Thickness For Miniscrew Placement In Relation To The Vertical Facial Patterns Using Cbct: A Cross-Sectional Study, Rima Daoui, Aly Osman

International Arab Journal of Dentistry

Introduction: The need of more anchorage in the orthodontic daily practice has introduced the use of temporary anchorage devices (TADs). Cortical bone thickness has been one of the major factors on the success rate of the stability of TADs. Different vertical dimension patterns can be found among orthodontic patients with potentially variable cortical bone thickness.

Aim of the study: to assess the cortical bone thickness in the posterior region of the mandible in relation to different vertical facial patterns using Cone-beam computed tomography (CBCT) and to evaluate the progressive change in the thickness of cortical bone from 4,6 …

Is Cutaneous Profile Perception An Indicator Of Skeletal Class Iii Malformation Treatment Plan? A Cross-Sectional Study, Ibrahim Hatoum, Rania Nassar

International Arab Journal of Dentistry

Background: The treatment choice in adults with skeletal class III malocclusion represents a challenging task for orthodontists, especially in borderline cases. With the growth spurt being surpassed, the clinician is left between two treatment options: orthodontic camouflage or orthognathic surgery. Around the years, many studies tried to uncover a guide model which enables practitioners to distinguish between skeletal class III that can be appropriately treated by orthodontics alone and those needing surgical intervention.

Aim: The aim of this study is to demonstrate the importance of cutaneous profile perception as a subjective decisive parameter in the treatment of borderline …

Space Maintenance In The Primary And Mixed Dentitions, Giovana Anovazzi Medeiros Dds, Msc, Phd, Chia-En Tsai Dds, James R. Boynton Dds, Ms

The Journal of the Michigan Dental Association

Primary teeth serve many critical functions in the growing child: they allow for proper chewing function for appropriate diet and nutrition, help in speech production and development, promote self-esteem, and importantly preserve space for eruption of the succedaneous permanent dentition. Premature loss of a primary molar can cause a loss of arch perimeter and negatively impact the normal eruption path of premolars. Space maintenance is an approach to minimize or prevent untoward consequences after unavoidable loss of a primary molar. Several types of space maintainers can be used to preserve arch length, including fixed unilateral space maintainers, such as the …

Comparison Of Skeletal Class Iii Malocclusion Facial-Shape Subtypes Between Caucasian, African American, And Hispanic Populations, Rachel Katherine Huffman

Graduate Theses, Dissertations, and Problem Reports (ETD)

Abstract

Comparison of Skeletal Class III Malocclusion Facial-Shape Subtypes Between

Caucasian, African American, and Hispanic Populations

Rachel K. Huffman, DMD

Introduction: The development of a skeletal Class III malocclusion (Cl III) is complex as it can arise from the overgrowth of the mandible, undergrowth of the maxilla, or a combination of the two. To understand the heterogeneity of this trait clinically, studies have been conducted using facial shape analysis (e.g., Geometric morphometrics (GeoMorph)) of Caucasian and Asian populations to learn more about the principal shapes. Little is known, however, about the predominant principal shape components of Cl III within African …

The Effects Of E-Cigarette Aerosol On The Force Degradation Of Elastomeric Chain: An In Vitro Pilot Study, Nicholas David Palmer

Graduate Theses, Dissertations, and Problem Reports (ETD)

Background and Objectives

An ideal orthodontic force system should exert continuous light force. An orthodontist has the option to utilize different systems for closing orthodontic extraction space. A commonly used method when closing extraction space is to utilize orthodontic elastomeric chain. Energy Chain® (Rocky Mountain Orthodontics, Franklin, IN) allows for less deformation of shape following the initial stretch, more consistent force, and less force degradation over time. The mouth is a harsh environment that experiences daily changes in pH and temperature. These changes cause elastomeric chain to experience increased force degradation. The creation of the JUUL® (JUUL Labs, San Francisco, …

A Comparison Of The Failure Rate Of Two Orthodontic Light-Curable Adhesives: A Chart Review, Ian Montgomery Weaver

Graduate Theses, Dissertations, and Problem Reports (ETD)

A Comparison of the Failure Rate of Two Orthodontic Light-Curable Adhesives: A Chart Review

Ian Montgomery Weaver, D.D.S.

Background and Objectives: The overhead costs of running a private orthodontic practice are infamously high, thus there is a notable benefit to finding the most cost effective methods of treating patients while still maintaining high quality care. A relatively new light-cure orthodontic adhesive BracePaste®^® (American Orthodontics™, Sheboygan, WI), introduced to the market in 2017, can fluoresce under UV light to assist in identifying the difference between the enamel of the tooth and the adhesive material itself, an ability which can aid …

The Expression Of Incretin Hormones And Their Receptors In The Submandibular Glands Of Offspring From High Fat Diet-Fed Mother Rats, Pornchanok Sangsuriyothai

Chulalongkorn University Theses and Dissertations (Chula ETD)

Incretins, i.e., glucagon-like peptide-1 (GLP-1) and glucose-dependent insulinotropic polypeptide (GIP) promote insulin secretion to reduce postprandial blood sugar. Previous studies found incretins in the salivary glands in rat. However, the role of GLP-1 and GIP in the submandibular gland (SMG) is unclear. This study investigates the effects of a high-fat diet (HFD) on the expression of GLP-1 and GIP throughout the development of rat SMG. Pregnant 11-week-old rats were divided into standard diet and HFD groups (n = 5 each). The newborns were divided into four subgroups (n = 6): standard diet males, HFD males, standard diet females, and HFD …