Orthodontics and Orthodontology Commons^™

Assessment Of Association Between Pain And Root Resorption During Canine Retraction: An Exploratory Study, Hend S. Elsayed

Future Dental Journal

Background: Pain and root resorption are common adverse events reported in the orthodontic literature. Both are side effects of the sterile inflammatory tissue reaction related to the application of orthodontic force. Aim: The aim of this exploratory study was to assess the association between pain and root resorption during canine retraction. Materials and Methods: Twenty-four patients indicated for first premolar extraction and canine retraction were recruited. All patients were treated with 0.022” X 0.028” Roth prescription brackets. After leveling and alignment, canines were retracted over 0.017” X 0.025” stainless steel arch wires. Canines were retracted with elastomeric chains applying 150g …

Efficacy Of Psychological Interventions In The Reduction Of Orthodontic Pain At Its Peak Of Intensity In Patients Undergoing Fixed Orthodontic Treatment: A Systematic Review And Meta-Analysis, Mahmoud Mando Dr., Sameh Talaat Dr.

Future Dental Journal

Objectives: To investigate the efficacy of psychological interventions in the reduction of orthodontic pain at its peak of intensity.

Data sources: A search strategy was implemented using both manual hand search and electronic databases, including Cochrane Central Register of Controlled Trials (CENTRAL), PubMed, ScienceDirect, Scopus and EBSCO.

Resources selection Randomized controlled trials involve 1) patients undergoing fixed orthodontic treatment 2) minimum age of 10 years old, 3) receiving a psychological intervention to control resulted pain and discomfort, 4) medically fit and 5) no previous orthodontic treatment, were included in the systematic review. All articles were checked against the inclusion and …

The Influence Of Cbct-Derived 3d-Printed Models On Endodontic Microsurgical Treatment Planning And Confidence Of The Operator, Shreyas Oza, Johnah C. Galicia

Orthodontics and Endodontics Theses

Aims Use of 3D printed models in Endodontics has been gaining popularity since the technology to create them became more affordable. Currently, there are no studies that evaluate the influence of 3D models on endodontic surgical treatment planning and on operator confidence. Therefore, aims of this study were to: (i) Determine whether the availability of a 3D printed analogue can influence treatment-planning and operator confidence; and, (ii) Assess which factors of operator confidence are influenced, if any.

Materials and Methods Endodontists were asked to analyze a pre-selected CBCT scan of an endodontic surgical case and to answer a questionnaire that …

Segmental Maxillomandibular Rotational Advancement (Smmra) In The Treatment Of Adult Patients With Severe Obstructive Sleep Apnea, Hsien-Ching Hung, Ya-Ying Teng, Yuh-Jia Hsieh, Yi-Chin Wang, Yu-Chih Wang

Taiwanese Journal of Orthodontics

Obstructive sleep apnea (OSA) occurs as an increased collapsibility of the upper airway during sleep, which threatens health and quality of life. Asian men with greater severity of OSA presents less obese and are connected with craniofacial abnormalities. Although the traditional maxillomandibular advancement (MMA) had the comparable effectiveness to the continuous positive airway pressure therapy, the midfacial esthetics might be compromised in Asian individuals. The modified MMA procedure was proposed to balance the esthetic demands and improvement of OSA symptoms. The case report showed a 25-year-old man presented with a diagnosis of severe OSA. The pretreatment Apnea Hypopnea Index (AHI) …

Protraction Of Maxillary Single Side Teeth For Substitution Of Missing Canine And 1st Molar, Wan-Jung Tsai, Szu-Ching Lee, Tzu-Ying Wu

Taiwanese Journal of Orthodontics

This case report presents a 24-year-old female with Class III skeletal pattern, anterior cross-bite, retroclined upper incisors with missing teeth (23, 26, 46). Upper dental midline was shifted to left for 3.5 mm due to early missing of tooth 23. Maxillary sinus pneumatization was noted at both sides.

Our treatment goal was to correct upper dental midline and anterior crossbite. On the other hand, the patient requested to close all of the extraction space and solve the problem of poor prognostic tooth 36. Therefore, we extracted tooth 14 for crowding relief and midline correction. Interdental screw was used to protract …

Surgical Alteration Of Occlusal Plane Angulation Followed By Orthodontic Application Of Tads And Yin-Yang Arch Wire In Hypodivergent Prognathic Malocclusion, Chih-Hsun Hou, Yi-Min Liu, Chia-Yi Pan, Huei-Mei Tsai

Taiwanese Journal of Orthodontics

Surgical clockwise pitch rotation of the maxillo-mandibular complex could change the occlusal plane angulation and thereby open the bite. This procedure also increases the mandibular plane angle by forcing the lower face to turn backward and downward; it is the key to correct both skeletal and dental Class III malocclusions.

This case report presents a skeletal deformaty which primarily resulted from excessive transverse growth and reduced vertical growth in the midface and upper dentition. The counterclockwise growth rotation and excessive forward growth mandible aggravated the sagittal jaw bone discrepancy. The dental effect included canted maxillary occlusal plane and severe attrition …

Indication And Timing Of Mucogingival Soft Tissue Augmentation Associated With Orthodontic Treatment, Shun-Jen Yu, Yi-Hao Lee, Aaron Yu-Jen Wu

Taiwanese Journal of Orthodontics

Gingiva recession is defined as an apical shift of the gingival margin caused by different conditions/pathologies. It is associated with clinical attachment loss. Several studies showed prevalence of gingiva recession in orthodontic patients. Some predisposing factors should be taken carefully considering the effect of the treatment modality. No consensus agreement was identified about the timing of the soft tissue augmentation intervention for orthodontic patients with the risk of gingival recession. However, several critical factors can guide the decision making to obtain the most preferred treatment option.

This article reviews the factors regarding the correlation of gingival margin alteration and orthodontic …

Perception Of And Attitudes On Malocclusion: A Literature Review, Gannaran Narangerel, Hsin-Chung Cheng, Bolormaa Sainbayar, Ganjargal Ganburged

Taiwanese Journal of Orthodontics

Purpose: This study aimed to review published evidence on the perception of and attitude on malocclusion and to examine existing assessment tools and influencing factors.

Methods: PubMed, Cochrane Library, and Scopus databases, as well as electronic archives of the European Journal of Orthodontics, American Journal of Orthodontics and Dentofacial Orthopedics, and Angle Orthodontist, were searched to collect articles that compared perception differences between dental professionals and laypeople. Articles that investigated perceptions of dental professionals were excluded.

Results: The literature search identified 94 articles. A total of 31 suitable studies from 1970 to 2019 were finally considered in the review. …

Could Cephalometric Landmarks Serve As Boundaries Of Maxillary Molar Distalization? A Comparison Between Two- And Three-Dimensional Assessments, Jhong-An Ye, Chi-Yu Tsai, Yi-Hao Lee, Yu-Jen Chang, Shiu-Shiung Lin, Jui-Pin Lai, Te-Ju Wu

Taiwanese Journal of Orthodontics

Purpose: This study aimed at measuring the differences between the two-dimensional (2D) and three-dimensional (3D) radiographic boundaries for molar distalization, and their correlations for the amount of maxillary molar distalization.

Patients and Methods: A total of 250 consecutive adult patients were retrospectively reviewed. All the enrolled patients possessed Angle Class III malocclusion with moderate maxillary crowding and suitable for camouflage treatment. The spatial differences between the 2D and 3D radiographic boundaries were compared and measured. The correlation among the range of the distalization boundary and studied clinical variables were assessed by Pearson correlation and the linear regression to determine the …

Variants Of Facial Shape Genes In Patients With Class Ii Or Class I Malocclusion, Mahsa Mortazavi, Marie M. Tolarová Md, Phd, Drsc, Mirek Tolar

Orthodontics and Endodontics Theses

Background and purpose: In recent years, questions regarding the genetic and environmental factors affecting variation in human craniofacial morphology have received increasing attention. Medical and clinical genetic research using family studies has proven foundational for our understanding of which genes affect craniofacial variation. On the other hand, cephalometricbased studies showed a relationship between the cranial base and midface characteristics among individuals with different skeletal pattern of malocclusion. The purpose of our pilot study was to analyze specific variants of facial genes that were suggested to be associated with cranial base width and depth in Class II and Class I malocclusions. …

Variants Of Pax Gene Family In Patients With Class Ii Or Class I Malocclusion, Mana Naeim, Marie M. Tolarová Md, Phd, Drsc, Mirek Tolar

Orthodontics and Endodontics Theses

Background and Purpose. Orthodontic treatment helps to ensure proper function of teeth and to create healthy smiles. To this aim, the orthodontist’s goal is establishment of an esthetic harmony between soft and hard tissues of the face. Dimensions of facial width and height are crucial for accurate diagnosis and formulation of an efficient treatment plan. A knowledge of genetic determinants of these dimensions in Class II patients will deepen our understanding of etiology of skeletal Class II malocclusions and would make it possible to personalize a patient’s treatment plan. The purpose of our pilot study was to analyze, if specific …

Effects Of Remote Digital Monitoring On Oral Hygiene Of Orthodontic Patients: A Prospective Study, Linda Sangalli, Fabio Savoldi, Domenico Dalessandri, Stefano Bonetti, Min Gu, Alberto Signoroni, Corrado Paganelli

Oral Health Science Graduate Research

BACKGROUND: Remote digital monitoring during orthodontic treatment can help patients in improving their oral hygiene performance and reducing the number of appointments due to emergency reasons, especially in time of COVID-19 pandemic where non-urgent appointments might be discouraged.

METHODS: Thirty patients scheduled to start an orthodontic treatment were divided into two groups of fifteen. Compared to controls, study group patients were provided with scan box and cheek retractor (Dental Monitoring®) and were instructed to take monthly intra-oral scans. Plaque Index (PI), Gingival Index (GI), and White Spot Lesions (WSL) were recorded for both groups at baseline (t₀), every …

Comparison Of The Upper Airway Volume In Orthodontically Treated Cases With First Premolar Extractions, Krystal Park

Loma Linda University Electronic Theses, Dissertations & Projects

Introduction: Comprehensive orthodontic treatment often entails extraction of teeth to accomplish treatment goals. A potential side effect of extraction therapy is arch length shortening resulting in decreased space for the tongue which may cause a low tongue posture and a possible reduction in airway space. The purpose of the study was to retrospectively determine if extractions of all first premolars during orthodontic treatment and the resulting movement of mandibular incisors are correlated with a reduction in airway volume.

Materials and Methods: The T1 and T2 CBCT’s of 80 patients were collected and reviewed. The cases were divided into treatment (extraction) …

Summary Description And Treatment Plan Elements Derived From Cbct And Mri Based Orthodontic Records, Mainer Cruz

Loma Linda University Electronic Theses, Dissertations & Projects

Objectives: This study examined the agreement of summary description and treatment plan elements derived from cone beam computed tomography (CBCT) and 3-Tesla (3T) magnetic resonance imaging (MRI) scans.

Methods: This retrospective study involved thirteen human subjects, all of whom had one CBCT scan (NewTom 5G, AFP Imaging, USA) and one MRI scan (Siemens Medical Solutions, DE) of the whole head performed within a two-week period. CBCT images were taken with a field of view of 18x16 inches and resolution of 0.3x0.3x0.3 mm, over an exposure time of 5.4 seconds. MR images were acquired using a 3.0T imaging system …

Evaluating The Treatment Effectiveness And Efficiency Of The Df2 Protocol Using Invisalign® For Treatment Of Class Ii Malocclusion: A Retrospective Comparison Study, Bryan J. Otis

Loma Linda University Electronic Theses, Dissertations & Projects

Purpose: This retrospective study evaluated the treatment effectiveness and efficiency of the DF2 protocol for correction of class II malocclusions in comparison to conventional protocol using Invisalign®.

Materials and Methods: Clinical and cephalometric data of patients that were treated for class II malocclusion between July 30, 2014 and July 22, 2021 were reviewed and selected. The selected patients were matched for age, sex, and treatment complexity and divided into two groups: Group 1 (G1) —DF2 protocol and Group 2 (G2)—conventional class II Invisalign®. Clinical variables to represent the skeletal and dentoalveolar changes during treatment were assessed using pre-treatment (T1) …

Accuracy Of Digital Indirect Bonding Technique Utilizing 3d-Printed Trays, Phillip Ha

Loma Linda University Electronic Theses, Dissertations & Projects

Purpose: This study investigated the bracket placement accuracy of a digital indirect bonding (dIDB) technique utilizing 3D-printed trays and the effects of dental crowding and tooth type on bracket placement accuracy.

Material and Methods: Thirty digital mandibular models of various amounts of arch length discrepancy (ALD) were categorized into 3 groups according to the amount of ALD. Digital bracket placement was performed from second molar to second molar using Indirect Bonding Studio (3ShapeTM, Copenhagen, Denmark) and this virtual model was used as the control. Indirect bonding trays were designed using Appliance Designer (3ShapeTM) and 3D-printed with the SprintRayTM …

Interrelationship Between Orthodontics And Implantology In Anterior Aesthetic Rehabilitation: A Case Report, Adailton De Morais Cavalcante, Renata Cordeiro Teixeira Medeiros, Danilo Lopes Ferreira Lima, Saulo Ellery Santos

Journal of Dentistry Indonesia

The rehabilitation of complex cases in the anterior region of the maxilla may require knowledge of several dental specialties. when dental involvement also causes bone and gingival involvement, management usually requires adjustment of gingival zenitis and bone graft to compensate for bone loss.

Objective: to discuss a case of previous orthodontic treatment for implant-prosthetic rehabilitation in the anterior region.

Case report: This case report describes a 40-year-old patient who came with the intention of extracting the tooth and installing a bridge. The implant-prosthetic treatment was performed after previous orthodontic treatment to adapt the gingiva and space.

Conclusion: The interrelationship of …

Evaluation Of The Relationship Between Sella Turcica Bridging And Dental Anomalies, Ahmet Karaman, Saadet Cinarsoy Cigerim Assistant Professor, Nourtzan Kechagia Research Assistant

Journal of Dentistry Indonesia

Objectives: This study aims to evaluate the relationship between the morphological variations of Sella Turcica (ST) and dental anomalies.

Methods: This study included 765 individuals between the ages of 13 and 35. ST morphology was examined in 3 groups as no calcification, partially calcified and completely calcified according to the interclinoid ligament (ICL) on lateral cephalometric films, and it was examined and evaluated in terms of its relationship to impacted canines (unilateral and bilateral), impacted teeth (except 3rd molars), root dilaceration, tooth deficiency (upper incisor lateral - lower and upper second premolar), supernumerary tooth and taurodontism.

Results: The rates of …

Effect Of Natural And Industrial Juices On Surface Microhardness Of Microhybrid And Nanohybrid Composites, Razieh Meshki, Hanieh Hoseini

Journal of Dentistry Indonesia

Numerous studies have been conducted on the effect of various beverages on the mechanical properties of tooth-colored materials, however, little is known about the effects of these materials on composites, particularly newer types such as nanocomposites.

Objectives: This study aimed to evaluate the surface microhardness of two types of composites, micro-hybrid (point 4) and nanohybrid (premise), after exposure to natural and industrial juices.

Methods: In this experimental study, 90 disc-shaped specimens with a thickness of 2 mm and a diameter of 10 mm were taken from two composites, micro-hybrid Point4 (Kerr) and nanohybrid premise (kerr) (two groups of 45). Then, …

The Pharyngeal Airways Of Patients With Class Ii Malocclusion: A Cone-Beam Computed Tomography Analysis, Yazgı Ay Ünüvar, Fundagül Bilgiç Zortuk, Törün Özer, Kadir Beycan

Makara Journal of Health Research

Background: This study aimed to compare the minimum axial (min Ax) area and the volumes of the nasopharyngeal (NP) and oropharyngeal (OP) airways of patients with Class II malocclusion with different sagittal positions of the mandible and maxilla and patients with Class I malocclusion with normal jaw positions.

Methods: Airway areas and volumes of 51 patients with Class I malocclusion with normal maxillary and mandibular positions (0 < ANB < 4, 84 > SNA > 80, and 82 > SNB > 78) were compared with 21 patients with Class II malocclusion with normal maxillary and retrognathic mandibular positions (ANB>4, 84>SNA>80, and SNB4, SNA>84, …

The Non-Surgical Treatment Of Class Ii Jaw Relation With Anterior Open Bite, Jyun-Long Wang, Yu-Chuan Tseng

Taiwanese Journal of Orthodontics

This 19-year-old female presents anterior open bite with skeletal Class II jaw relation. The treatment modality was non-surgical treatment with 4-bicuspid extraction and molar intrusion by full-mouth fixed edgewise appliances and temporary anchorage devices. A favorable result of ideal overbite/overjet and improvement of profile change were achieved. The patient was satisfied with the improvement of function and esthetics after treatment.

Hemimandibular Hyperplasia Treated By Orthognathic Surgery And Condylectomy In A Young Woman, Shin Pey Peng, Wen-Ching Ellen Ko, Cheng-Hui Lin, Chung-Yi Ho

Taiwanese Journal of Orthodontics

Hemimandibular hyperplasia is a developmental asymmetry characterized by 3-dimensional enlargement in one half of the mandible. The malformation results in facial asymmetry, associated with tilted occlusal plane and a deviated chin to the contralateral side. These cause esthetic and progressive functional problems and need to be corrected without recurrence.

This report describes a 27-year-old woman presented with skeletal Class III malocclusion, occlusal plane cant and facial asymmetry. Radiographic films showed hyperplasia of half mandible and condyle on the left side. The condylar hyperactivity over left mandibular condyle was also confirmed by 99m-Tc bone scan. In order to correct her skeletal …

Unilateral Premolar Crossbite And Atypical Extraction Case Treated With Clear Aligner, Ting-Fen Chang, Tzu-Ying Wu

Taiwanese Journal of Orthodontics

A unilateral buccal crossbites can be observed in adult patients with skeletal asymmetry and crowded dentition. This case report describes the orthodontic treatment with clear aligners for a 57-year-old female with chin deviation, lower dentition crowding and a unilateral complete buccal crossbite in right premolars. Mandibular single incisor extraction was planned to relieve crowding and the crossbite was resolved by intrusion of upper premolar and uprighting of lower premolar with clear aligners in combined with inter-arch elastic. The entire treatment was completed within 20 months and the treatment result showed good vertical control. This case report demonstrates that clear aligners …

Surgery First Approach For Correcting A Skeletal Class Ii Malocclusion With Impinging Deep Bite, Yu-Ting Chiou, Tzu-Hang Hsu, Sang Heng Kok, Chung-Chen Jane Yao

Taiwanese Journal of Orthodontics

This case report illustrates a surgery-first treatment for surgical correction of Class II malocclusion. A 54- year-old female, presenting a chief complaint of deep bite and gum biting, came to seek for treatment. She had skeletal Class II and dental Class II malocclusion with 11 mm excessive overjet. Intraoral examination revealed large mandibular curve of Spee. Treatment was performed with a surgery-first approach, moving the dentition towards edge-to-edge bite, followed by extruding mandibular posterior teeth and normalizing the overjet and overbite. Finally, good interdigitation was achieved, as well as the improvement of masticatory function. The patient was satisfied with the …

Reliability Of Panoramic Radiography In Assessing Gonial Angle Compared To Lateral Cephalogram In Patients With Class I Malocclusion, Ravi Ranjan Kumar Rajak, Rabindra Man Shrestha, Sushmit Koju

Taiwanese Journal of Orthodontics

Purpose: To investigate whether panoramic radiograph can be used as an alternative to lateral cephalogram for measuring the gonial angle in skeletal Class I patients. Patients and Methods: Panoramic radiograph and lateral cephalogram were collected from the pretreatment records of 100 patients of the age 16-30 years from the Department of Orthodontics. Radiographs were manually traced and the gonial angle was measured. Paired t-test was used to find the difference in mean gonial angle between the panoramic radiograph and lateral cephalogram. A simple regression analysis was performed to find the relationship between the gonial angles in two different …

Class Ii, Division 2 Malocclusion: What The Clinician Should Know About Treatment Of This Malocclusion (Part Ii), Ib Leth Nielsen

Taiwanese Journal of Orthodontics

Treatment of Class II, Div. 2 malocclusion can be a challenging undertaking for the orthodontists. The facial growth pattern and in particular the mandibular growth pattern can greatly influence the outcome of treatment and the long-term stability. In this article we will discuss factors determining the best time for treatment, the choice of treatment mechanics and the indications for extraction versus non-extraction. Criteria for treatment with two upper bicuspid extraction will be discussed and we provide 8 rules to consider for a successful outcome of treatment. Factors influencing long-term stability will be discussed and a protocol to improve stability will …

Rotational Forces Generated By Traditional And Loop-Design Clear Aligners, Grant Essink

Loma Linda University Electronic Theses, Dissertations & Projects

Objective: This study aims to evaluate force (F) and torque (Tq) generated by a novel “loop-design” clear aligner compared to the F and Tq generated by a traditional clear aligner design. The novel design may reduce the risk of orthodontic root resorption (ORR), by reducing forces during tooth rotation.

Materials and Methods: Traditional clear aligners (T) and ArchForm Loop clear aligners (AFL) were compared for differences in F and Tq exerted on selected canine and molar teeth. The test tooth was sectioned out of the test model, attached to a load cell and replaced in the test model …

Strategies For Treatment Of Bilateral Impacted High Canine–Lateral Incisor Transposition: A Stepwise Approach, Yun-Yun Wu, Fu-Hui Tsai, Jui-Hsien Yang

Taiwanese Journal of Orthodontics

To achieve a satisfactory outcome for transposed impacted teeth, the esthetic assessment and functional rehabilitation should be considered from both the orthodontic and periodontic perspective. In this case, a stepwise approach was used for both surgical uncovering and orthodontic treatment to manage the soft and hard tissue of transposed high canine. The case involved a girl aged 11 years and 7 months with bilateral high impacted canine–lateral incisor transposition. The impacted canines were first uncovered with the closed eruption technique and then moved horizontally to a normal sequence in the arch. Apically repositioned flap surgery was then performed, and the …

Management Of Unilateral Maxillary Canine Impaction, Maureen Antolis, Krisnawati E. Tarman

Taiwanese Journal of Orthodontics

Maxillary canine is an essential part of teeth for smile esthetic and function. Orthodontic treatment for patient with impacted maxillary canine is considered to be more complex and require good biomechanical control during traction. This case report describes an orthodontic treatment of a 17-year old female patient with unilateral maxillary canine impaction on the left side. Orthodontic traction was used to guide the canine into normal occlusion. The orthodontic treatment had been completed within 19 months and successfully obtained favourable esthetic and stable occlusion.

Compare Two Methods Of Dental Arch Length Measurements On Digital Dental Models, Ying-Chen Chen, Carol Yi-Hsuan Chen, Ellen Wen-Ching Ko

Taiwanese Journal of Orthodontics

Purpose: Accurate space discrepancy evaluation is important in treatment planning. Straight-line segments and brass wire method are the most common methods in arch length assessment. However, using segments causes underestimation, while more reliable brass wire method shows lower reproducibility. The aim of our study is (1) to compare the difference between conventional segmental distance method (SD) and a new method, ideal arch form (IA), and (2) to assess the reproducibility and reliability of two methods by means of digital models. Materials and methods: Thirty sets of digital dental models presented full permanent dentition and Angle’s Class III malocclusion were included. …