Orthodontics and Orthodontology Commons^™

Comparison Of Ultrasonography And Cone Beam Computed Tomography In The Differential Diagnosis Of Periapical Lesions: A Prospective Radiopathological Study, Gozde Serindere, Ceren Aktuna Belgin, Mert Bulte, Didar Gursoy, Fariz Salimov

Journal of Dentistry Indonesia

Objective: The aim of this study is to evaluate the correlation between ultrasonography (USG) and cone beam computed tomography (CBCT) and the accuracy between histopathological diagnosis and preliminary diagnosis in the diagnosis of periapical lesion. Methods: 20 patients with periapical lesion in the jaw, were included in the study. The presence of expansion or perforation and dimensions of the lesion were performed with CBCT. In the examination of the lesion with USG, shape, echogenicity, vascularization of the lesion and the presence of buccal expansion and perforation, were determined. Subsequently, a biopsy was taken from the lesion for histopathological examination and …

Multidisciplinary Retreatment Of Skeletal Class Ii Malocclusion With Obstructive Sleep Apnea And Multiple Prosthesis, Si-Rong Chen, Cheng-Hui Lin, Ellen Wen-Ching Ko

Taiwanese Journal of Orthodontics

Obstructive sleep apnea (OSA) is a common sleep disorder syndrome, especially in the middle-aged, obese men population. Patients suffer from an interrupted sleep at night, which could be life-threatening. Treatment alternatives include continuous positive airway pressure, mandible advanced device, nasal surgery and maxillo-mandibular advancement surgery. This article presented a patient who came with chief complaints of lower jaw retrusion, poor sleep quality, unsatisfactory occlusion and old prosthesis. The patient had declined the surgical-orthodontics in 12 years ago, and went for another camouflage orthodontic treatment with extraction of teeth and multiple prosthesis. He presented with skeletal Class II with retrognathic mandible …

Camouflage Treatment Of Skeletal Anterior Open Bite With Tongue Training, Cheng-Han Sie, Wen-Ken Tai, Chih-Chen Chou, Po-Yu Yang, Jung-Chun Yeh, Chun-Te Ho, Chia-Tze Kao

Taiwanese Journal of Orthodontics

The aim of this case report was to present an adult patient who suffered from poor occlusal function and poor aesthetic appearance due to skeletal anterior open bite. After orthodontic treatment, she was satisfied with improvements of mastication and esthetics. A case of 20-year-old female with skeletal Class II jaw relationship, mandible retrognathism and anterior open bite without signs and symptoms of temporomandibular disorder. Intraoral examination showed premature contact over bilateral posterior teeth and the forward resting position of tongue. Our treatment plan was orthodontic camouflage with extraction of all first premolars and tongue training. As forward resting position of …

Quality Of Life Changes In Taiwanese Patients With Dentofacial Deformities Undergoing Orthognathic Surgery, Jing Hao Ng, I-Chen Lee, Becky Chiang-Lin Liu, Ellen Wen-Ching Ko

Taiwanese Journal of Orthodontics

Objectives: The evaluation of orthognathic surgery (OgS) is shifting towards a coherent approach for patient care that balances objective clinician-defined measures with patient-centred outcome assessments, including health-related quality of life (QoL). This aim of this study adds to the pool of literature in East Asian subjects by studying the longitudinal QoL changes in Taiwanese patients with dentofacial deformities (DFD) undergoing OgS, using two standardized questionnaires at three different treatment stages. Materials and Methods: This prospective cohort study comprised 113 consecutive Taiwanese OgS patients who underwent surgical-orthodontic treatment between 2015 and 2018. The subjects completed SF-36 and OHIP-14 standardized questionnaires with …

Comparison Of Bone Thickness In Infrazygomatic Crest Area At Various Miniscrew Insertion Angles: A Cone-Beam Computed Tomographic Study, Rajju Dangal, Rabindra Man Shrestha, Jyoti Dhakal, Sujita Shrestha, Alka Gupta, Shreya Shah

Taiwanese Journal of Orthodontics

Introduction: The infrazygomatic crest (IZC) is an alternative site for miniscrew anchorage. It is important to analyze the anatomy of the region during preoperative planning to minimize the risk of unwanted tooth movement and injury to the vital structures. The literatures on the clinical application of miniscrew in IZC is scarce. Objective: To determine bone thickness, height and angle of insertion of miniscrew in the IZC region. Materials and methods: This cross-sectional observational comparative study included 44 patients above18 years. IZC bone thickness and height of miniscrew insertion were measured on cone-beam computed tomographic (CBCT) records. Student t-test was done …

Cephalometric Analysis: History And Clinical Application, Ib Leth Nielsen

Taiwanese Journal of Orthodontics

When roentgen cephalometry was first introduced to the orthodontic profession in 1931 by Broadbent in the USA and Hofrath in Germany it was a major milestone in terms of new diagnostic tools available to orthodontists. Until that time only clinical observation and study casts of the patients had been available to the clinician but now a more in depth understanding of the facial makeup became possible. This meant that each patient’s malocclusion could now be related to their facial skeletal and dental morphology. The dentoalveolar components could now be studied in detail and better treatment plans could be developed that …

Aerosols In Orthodontics: Characterization Of Particle Size And Travel Distance, Donte Jochum-Nesbitt

Theses & Dissertations

Introduction: Aerosol production is a key contributor to occupational risk and disease transmission in the dental clinic. These aerosols can host harmful pathogens, such as SARS-CoV-2. Considering the 2020 pandemic, researchers endeavored to bolster the existing body of literature related to disease transmission via aerosols and droplets to provide better recommendations for infection control. This investigation aims to support that mission by characterizing the risk to orthodontic professionals and patients based on aerosolized particle size and travel distance. Methods: The experimental protocol used in this study was validated through a smaller scale pilot study in 2021. High- and Low-risk orthodontic …

Factors Influencing The Decision To Initiate Orthodontic Treatment And The Choice Of Appliance Type In A Lebanese Sample During The Covid-19 Pandemic And The Economic Crisis. A Cross-Sectional Study., Liliane Alameh, Elie Khoury, Elie Amm

International Arab Journal of Dentistry

Background: The spread of Coronavirus Disease 2019 (COVID-19) has led to a major public health issue. This study aimed to assess the factors that influence the Lebanese people in undergoing an orthodontic treatment after the outbreak of COVID-19, as well as the factors that influence their choice of orthodontic appliance type. Methods: 489 Lebanese participants (199 men and 290 women) were invited to fill a questionnaire developed on Google Forms. Eligible participants were simply Lebanese people including those who immigrated during the crisis. Dentists, dental students and foreigners were excluded from the study. The link for the questionnaire was sent …

External Apical Root Resorption Of Maxillary Incisors Following Orthodontic Treatment In Patients With Short Root Anomaly: A Cbct Study, Eric Le, Jonas Bianchi, Heesoo Oh

Orthodontics and Endodontics Theses

Introduction: The purpose of this study was to evaluate the amount of external apical root resorption (EARR) secondary to orthodontic treatment in patients with Short Root Anomaly (SRA) using Cone Beam Computed Tomography (CBCT) at the University of the Pacific Orthodontic Clinic. Material and Methods: In this retrospective study, CBCTs of forty-eight SRA patients who underwent orthodontic treatment were selected from the graduate orthodontic clinic. CBCTs before and after treatment were analyzed to measure root length changes on the upper central and lateral incisors. Results: Differences between the two methods of assessing SRA severity occurred between categorizing mild and moderate …

Three-Dimensional Analysis Of Skeletal Changes And Stability In Fixed Orthodontics Vs. Invisalign Therapy In Patients Undergoing Surgery First Approach, Mojan Mirnia, Hyeon-Shik Hwang, Jonas Bianchi

Orthodontics and Endodontics Theses

Introduction: The objective of this retrospective longitudinal study was to assess and compare the surgical changes and stability of the maxilla, mandible, and mandibular condyle, in patients who have undergone surgery first approach (SFA) followed by conventional braces or Invisalign (Inv) treatment. Methods: Thirty patients had a cone beam computed tomography (CBCT) exam taken at three timepoints: T1 (presurgery), T2 (immediately after surgery), and T3 at the completion of orthodontics treatment. After the cranial base registration, twenty-seven landmarks were located on each time point using axial, sagittal, and coronal cross-sectional views in the ITK-SNAP software. In addition, seventeen skeletal angular …

Efficacy Of Caries Detection And Characterization Using Near-Infrared Imaging Technology In The Itero Element 5d Intraoral Scanner In Comparison To Clinical-Reference Standard Bitewing Radiographs In A Pediatric Population, Kyle Cuenin, James Chen

Orthodontics and Endodontics Theses

Introduction: Near infrared imaging (NIRI) uses non-ionizing radiation in the near-infrared spectrum to differentially scatter light off tooth surfaces. This generates images that allow for interproximal caries detection, which have been proposed as an alternative to radiographic detection. The new iTero Element 5D intraoral scanner (Align Technology) has integrated NIRI capture and viewing technology but has not been specifically studied in a pediatric population. Therefore, the goal of this study was to assess clinicians’ abilities to detect and characterize caries in pediatric patients using this instrument. Methods: Bitewing (BW) radiographs and a NIRIenabled intraoral scan were captured on 17 pediatric …

Searching For Association Of Gsk3Β Rs13314595, Msx1 Rs3821949, Tgfβ3 Rs3917201, And Bmp4 Rs17563 With Non-Syndromic Cleft Lip And Palate, Gabrielle Wainwright, Marie M. Tolarová Md, Phd, Drsc, Mirek Tolar

Orthodontics and Endodontics Theses

Introduction: Non-syndromic cleft lip with or without cleft palate (NCL±P) is characterized by a multifactorial etiology with both genetic and environmental factors playing a role in its embryonic development. Recent genetic studies have identified susceptibility loci and genetic variations in several genes that were associated with the risk of developing NCL±P. The purpose of this study was to investigate the association of MSX1, BMP4, TGFβ3, and GSK3β gene variants with NCL±P in a casecontrol data set from Karaikal, India. Methods: The case sample consisted of 331 individuals who were diagnosed with CL (bi/unilateral cleft lip), CLP (bi/unilateral cleft lip and …

The Outcome And Stability Of Anterior Open Bite Treatment With Clear Aligners In Adults, Heeyeon Suh, Kimberly Mahood, Heesoo Oh

Orthodontics and Endodontics Theses

Objectives: This study aimed to examine the outcome and stability of the anterior open bite treatment with clear aligners. Methods: Fifty-two adult anterior open bite patients who underwent nonextraction clear aligner treatment were enrolled. All cases were retained with upper and lower fixed and vacuum-formed retainers. Eleven cephalometric measurements at pretreatment (T1), end-of-active-treatment (T2), and at least 1-year post-treatment (T3) were evaluated. The changes during the treatment and retention period were calculated. Results: Mean end-of-treatment (T2) overbite was 1.1 ± 0.7 mm. The mean change in overbite during treatment was 3.3 ± 1.5 mm. Mean retention (T3) overbite was 1.3 …

Assessment Of Skeletal Changes And Mandibular Plane In Growing Patients Treated With Miniscrew Assisted (Marpe) And Conventional Rapid Palatal Expansion Using Cbct Images, Daniel Voorhees, Jonas Bianchi, Heesoo Oh

Orthodontics and Endodontics Theses

Background: Maxillary expansion has long been used in children and adolescents for transverse discrepancies and dental crowding. With age, the mid-palatal suture becomes increasingly mature, requiring heavy, rapid force in order to achieve skeletal expansion. As an individual grows into adulthood, it has been demonstrated that a skeletally anchored expander can be used in order to achieve successful sutural separation. The side effects between these two types of expanders, including dental tipping with relative extrusion of buccal segments and clockwise mandibular rotation, have been demonstrated to have differences in their degrees of severity. However, most of the studies have evaluated …

Class Iii Correction Using Clear Aligner Therapy In Adult Patients, Kyra Lee, Kimberly Mahood, Heesoo Oh

Orthodontics and Endodontics Theses

Introduction: This study was designed to analyze the cephalometric changes in adult Class III malocclusion treated with clear aligner therapy. Methods: In this retrospective study, thirty-six Class III adult patients treated with clear aligner therapy in private practice and a graduate orthodontic clinic were included in this study. Inclusion criteria included patients aged 18 years and older, Class III molar relationship that is end-on or greater, at least one anterior tooth that is in crossbite or incisors in an edge-to-edge bite, and complete records (initial and final lateral cephalograms) that are clear and traceable. Twenty-two cephalometric measurements were measured and …

Early Prediction Of The Need For Orthognathic Surgery In Patients With Cleft Lip And Palate Using Skeletal And Soft Tissue Cephalometric Landmarks, Bianca Amy Lau, James Chen, Marie M. Tolarová Md, Phd, Drsc

Orthodontics and Endodontics Theses

No abstract provided.

Using Clear Aligners For Asymmetric Dental Decompensation In Skeletal Class Iii Facial Asymmetry Before Orthognathic Surgery, Yu-Ming Liang, Szu-Ching Lee, Fong Jenny, Tzu-Ying Wu

Taiwanese Journal of Orthodontics

In this case report of orthodontic combined with orthognathic surgery, we demonstrate the effectiveness of an aligner system in the treatment of asymmetric arch form. Without the help of temporary anchorage device and inter-arch elastic, unilateral arch expansion and opposite side arch constriction were achieved successfully. Cone-beam computed tomography was used to assess to evaluate the outcome and key to success was discussed.

Substitution Of A Dilacerated Impacted Maxillary Central Incisor With A Deep Horizontal Impacted Canine, Wei-Lun Chang, Szu-Ching Lee, Hsuan-Hung Chen, Man-Tin Lui, Tzu-Ying Wu

Taiwanese Journal of Orthodontics

The treatment of multiple impacted anterior teeth is challenging. Proper treatment plan, meticulous biomechanics design and close collaboration with interdisciplinary team work are key factors to achieve better esthetic and periodontal outcomes. For impacted tooth cases, CBCT images can provide more detailed information about the location of the impacted tooth and its surrounding periodontal conditions during treatment. This case report described the treatment of a mild skeletal Class III, facial asymmetry teenager with dilacerated impacted maxillary left central incisor. Because of the unpredictable prognosis of dilacerated impacted central incisor, our treatment goal was to forced erupt the deeply horizontal impacted …

Correction Of Extruded Upper First Molars And Bimaxillary Protrusion By Temporary Anchorage Device, Ignatia Wulandari, Retno Widayati

Taiwanese Journal of Orthodontics

Early loss of the lower first molar may cause extrusion of the upper first molar and mesial tipping of the lower second molar. It could be locked by the mesial contour of the upper second molar, causing the door-wedge effect which impedes the intrusion of the upper first molar. Skeletal Class II malocclusion, canting, and the need for anterior retraction on the upper arch was adding space requirement and anchorage problem to the case. Treatment by using absolute anchorage would be the most efficient way to treat this case. This case report aims to show how to manage molar extrusion, …

Mandibular Expansion Appliances And Their Activation Protocols, Tivanani Venkata Durga Mahendra, Vyshnavi Mulakala, Manda Anoosha

Taiwanese Journal of Orthodontics

A tooth size-arch length discrepancy (TSALD) occurs when there is an imbalance between the size of the teeth and the space available in the dental arches to accommodate them. Relief of crowding through expanding the arch is the most employed non-extraction method in orthodontics. Because of the absence of a midline suture and the resistance of the mandibular body, resolving crowding in the lower arch is more complex than in the upper arch. However, numerous researchers have devised innovative techniques and methods to successfully bring about the desired and stable changes through mandibular expansion. The advantage of this procedure was …

Factors Affecting Mandibular Growth And Displacement And Their Effect On Treatment Outcome, Ib Leth Nielsen

Taiwanese Journal of Orthodontics

Orthodontists often have difficulty distinguishing between growth and displacement when it comes to the mandible and often the two are merged into one and referred to as just mandibular growth. It is clinically important to distinguish between the two as it can greatly affect the choice of treatment protocol and mechanics. In this review we shall attempt to clarify the issue with clinical examples in the hope of bringing more understanding to the problem. Controlling the factors that are involved in determining the outcome of orthodontic treatment in a growing patient can often be a difficult task and is affected …

A New Cephalometric Innovation For Assessing Vertical Skeletal Discrepancy: The Msg Angle, Mahamad Irfanulla Khan, Praveen Kumar Neela

Taiwanese Journal of Orthodontics

Purpose: The aim of the study was to introduce a new cephalometric parameter, the MSG angle; and to assess the effectiveness of the MSG angle to diagnose the vertical skeletal discrepancy of the face.

Methods: One hundred and fifty pretreatment Lateral Cephalometric Radiographs (LCRs) of patients between 14 to 35years (Mean ± SD: 19.6 ± 4.93) were included. Based on the FMA, Sn-Go-Gn, and R - angle, all the LCRs were subdivided into three groups: low angle (28 female and 22 male); average angle (29 female and 21 male); and high angle (27 female and 23 male), with 50 …

Maxillary Central Incisor Rr In Hispanic And Non-Hispanic White Patients With Rme, Madison Healy

Loma Linda University Electronic Theses, Dissertations & Projects

Introduction: Apical root resorption is one of the most common adverse effects of orthodontic treatment. Forces used during orthodontic tooth movement can cause permanent loss of apical surfaces of teeth and although most reported cases of root resorption are asymptomatic, the process is irreversible and often unpredictable. Thus, it is of clinical interest to investigate which patients may be at greatest risk.

Purpose: This study utilized Cone Beam Computed Tomography (CBCT) to evaluate whether rapid maxillary expansion (RME) in Hispanic patients increased the severity of orthodontically induced apical root resorption.

Materials and Methods: Pre-treatment (T1) and post-treatment …

Force Comparison Of Rotational Tooth Movements For Loop-Design And Traditional Aligners, Robert Olsen

Loma Linda University Electronic Theses, Dissertations & Projects

Introduction

This study aimed to evaluate the force (F) and torque (Tq) exerted on a rotated canine and molar tooth by two different aligner systems. An ArchForm loop clear aligner (AFL) was compared to a traditional clear aligner (T) with the force (F) and torque (Tq) compared. A reduction in F and Tq with AFL aligners could possibly decrease the incidence of Orthodontic Root Resorption (ORR), while also creating more effective forces for tooth movement.

Materials and Methods

Two types of T aligners varying by material thickness were compared to two types of AFL aligners varying by loop width. All …

Electromyographic Activity Of Masticatory Muscles In Asymptomatic Young Adults, Aneta Wieczorek, Malgorzata Pihut, Jolanta E. Loster

Journal of Dentistry Indonesia

Introduction: The masseter and the anterior part of the temporalis are the muscles mainly responsible for the clenching function. Clenching patterns and the activity of these muscles are not expected to differ between male and females, nor between different occlusal classes. Objective: The aim of this study was to determine whether the activity index of the masseter and temporalis muscles is related to occlusal class and gender. Methods: This study involved 145 eighteen-year-old Caucasian volunteers who underwent surface electromyography. The sEMG was analyzed at the moment of 100% occlusal contact. Occlusal classes were determined used plaster casts. …

The Effect Of Disc Displacement On Temporomandibular Joint Morphology In Patients With Disc Displacement, Melike Yurttaş, Esin Bozdemir, Şehnaz Evrimler

Journal of Dentistry Indonesia

Objective: To examine the morphological properties of temporomandibular joint structures by magnetic resonance imaging (MRI) on patients with and without disc displacement (DD). Methods: Thirty-eight patients with disc displacement and 13 patients without disc displacement were included. Age, gender, and clinical findings such as pain, joint sounds of patients were recorded. The patients were classified as anterior disc displacement with reduction (ADDWR) group, anterior disc displacement without reduction (ADDWoR) group, and control group on MRI. Disc morphology was categorized as biconcave, hemiconvex, biconvex, biplanar, or folded. Condyle morphology was characterized as convex, angled, flat, or rounded. Articular eminence …

Effects Of Lime (Citrus Aurantifolia Swingle) Peel Extract Addition To Periodontal Dressing On The Number Of Blood Vessels In The Gingival Wound Healing Process, Malianawati Fauzia, Savira Pratista Oktaviana

Journal of Dentistry Indonesia

Background: Periodontal dressings that are currently available can only protect wounds from mechanical trauma, but have no ability to accelerate wound healing. Lime (Citrus aurantifolia Swingle) peel extract added to periodontal dressing contains flavonoids which can stimulate the formation of new blood vessels, thus accelerating the healing process. Objective: To determine the effects of adding lime (Citrus aurantifolia Swingle) peel extract to periodontal dressing on the number of blood vessels in the gingival wound healing process. Methods: 32 rabbits with 2 mm wound made on the gingiva were divided into 8 groups. For the control groups of …

Early Eruption Of All Permanent Teeth, Including The Upper Canines, In A Nine-Year-Old Child Who Was Born Prematurely; Case Report, Bassam Ali Al-Turaihi, Israa Hussein Ali

Maaen Journal for Medical Sciences

The world health organization (WHO) define the premature birth as a birth occur before 37 weeks of gestation or if the birth weight is below 2500 g. Our case subjected for both criteria of the preterm definition. ((1)) ((2)) The case was born before 31st week with 1300 g birth weight with stormy beginning of life in the first three months in the hospital according to the history taken from general practitioner (GP) for that reason their parents tack care about his general health and specifically oral health and development. Throughout his life he developed healthy with no medical problem. …

Camouflage Orthodontic Correction In An Adult Patient With Skeletal Class Iii Malocclusion – A Case Report, Yun-Fang Chen, Yuh-Jia Hsieh, Yu-Fang Liao

Taiwanese Journal of Orthodontics

The case report described the camouflage treatment of an adult patient with skeletal Class III, anterior cross bite, open bite tendency and dental crowding. A 19-year-old male patient presented with chief complaint of anterior crooked teeth. The clinical examination showed a straight to concave profile, midface retrusion, mandibular protrusion, slightly high mandibular plane angle, upper and lower lip protrusion, lip incompetence, Class III molar and canine relationships. Because the patient refused to receive orthognathic surgery, the camouflage orthodontic treatment was planned along with extraction of bilateral upper second premolars and lower first premolars and modest backward-rotation of the mandible to …

Intraosseous Movement Of Multiple Impacted Teeth Occurred In Unilateral Maxilla During Orthodontic Treatment – A Case Report, Chun-Hsiu Yang, Chun-Liang Kuo

Taiwanese Journal of Orthodontics

The orthodontic treatment of unilateral multiple impacted teeth is challenging. It is often accompanied with a wide range of surgical exposure for impacted teeth. We reported a 14-year-old male patient who had a retained primary canine, first and second molars in left maxilla, complicated with proximal caries and gingival abscess over the primary first molar. The panoramic radiography revealed with a horizontally impacted canine, first premolar and vertically impacted second premolar in left maxilla. After relive the underlined pathogenesis of the tooth impaction by removing the primary teeth and abscess, the second premolar erupted subsequently. During traction of the inferiorly …