Orthodontics and Orthodontology Commons^™

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. …

Evaluation Of Patients’ Experiences After Microimplant-Assisted Rapid Palatal Expansion (Marpe) Treatment, Huei-Rou Tsai, Kwok-Hing Ho, Chih-Wei Wang, Kai-Long Wang, Shun-Chu Hsieh, Heng-Ming Chang

Taiwanese Journal of Orthodontics

Purpose: Various microimplant- assisted rapid palatal expansion (MARPE) appliances were developed in these years. By applying this procedure, maxillary transverse deficiencies can be corrected in adults with limited dental tipping. However, some undesirable effects could happen during treatment. In this study, we aimed to record the incidence of any adverse effect or complication. Pain score was also measured during treatment. Patients and Methods: Twenty-nine patients (22.8 ± 8.6 years old) with 13 males and 16 females were enrolled. Clinical photographs, radiographs and cone-beam computed tomography were taken before insertion of MARPE and after expansion. Interview was conducted by one orthodontist …

Etiology, Development, Diagnosis And Considerations In Treatment Of The Class Ii, Division 2 Malocclusion: What The Clinician Should Know About This Malocclusion (Part I), Ib Leth Nielsen

Taiwanese Journal of Orthodontics

The Class II Division 2 malocclusion has puzzled a great many orthodontists over the years. How does it develop and how does it get its characteristic appearance? What are the etiological factors that lead to the typical arrangement of the front teeth? How should we treat it? These are just a few of the many questions that still need answers. In this article we will discuss the etiology and development of this malocclusion and in Part II provide some guidelines for timing and correction of the Class II, Div. 2 malocclusion that are applicable to most cases. We shall also …

Reprogramming Oral Epithelial Keratinocytes Into A Pluripotent Phenotype For Tissue Regeneration, Fayrouz Bazina, Sabine M. Brouxhon, Stephanos Kyrkanides

Center for Oral Health Research Faculty Publications

OBJECTIVES: We set out to reprogram adult somatic oral epithelial keratinocytes into pluripotent cells for regenerative dentistry.

SETTING AND SAMPLE POPULATION: Immortalized murine oral keratinocyte cell (IMOK) line raised from adult mouse mucosa were cultured in vitro in our studies.

MATERIALS AND METHODS: Adult murine oral epithelial keratinocytes were chronically treated with TGF-β1 in vitro, and the expression of Oct4, Nanog, Sox2 and Nestin, as well as specific homeobox Gata and Pax gene family members were investigated.

RESULTS: We documented the induction of stem factors linked with pluripotency and/or the maintenance and regulation of stem-cell self-renewal in oral epithelial keratinocytes …

Photobiostimulatory Effect Of A Single Dose Of Low-Level Laser On Orthodontic Tooth Movement And Pain, Irfan Qamruddin, Mohammad Khursheed Alam, Verda Mahroof, Mubassar Fida, Mohd Fadhli Khamis, Adam Husein

Section of Dental-Oral Maxillofacial Surgery

Objective: To assess the effect of low-level laser applied at 3 weeks intervals on orthodontic tooth movement (OTM) and pain using conventional brackets (CB).
Materials and methods: Twenty patients with Angle's class II div 1 (10 males and 10 females; aged 20.25 ± 3.88 years) needing bilateral extractions of maxillary first bicuspids were recruited. Conventional brackets MBT of 0.022 in slot (McLaughlin Bennett Trevisi) prescription braces (Ortho Organizers, Carlsbad, Calif) were bonded. After alignment and levelling phase, cuspid retraction began with nitinol closed coil spring on 19 × 25 stainless steel archwire, wielding 150 gram force. 7.5 J/cm² energy …

J Mich Dent Assoc May 2021

The Journal of the Michigan Dental Association

Every month, The Journal of the Michigan Dental Association brings news, information, and features about Michigan dentistry to our state's oral health community and the MDA's 6,200+ members. No publication reaches more Michigan dentists!

In this issue, the reader will find the following original content:

• A cover story “3D Printing in Dentistry: Concepts, Technologies, and Applications”.
• An interview with new MDA President Dr. Mike Maihofer.
• The MDA award-winners for 2021.
• A feature article, “Things to Know about the New e-Prescribing Law”.
• News you need, Editorial and regular department articles on MDA Foundation activities, Dentistry and the Law, Staff Matters, and …

Effects Of Ectodermal Dysplasia On The Maxilla: A Study Of Cone-Beam Computed Tomography, Beyza Karadede Ünal

Makara Journal of Health Research

Background: This study aimed to examine the effects of ectodermal dysplasia (ED) on the transverse width of the maxillary bone.

Methods: The ED group was composed of seven people, while the control group consisted of retrospective cone-beam computed tomography images of seven individuals with skeletal class 1 relationship. Images on the sagittal planes were taken, and cross-sections were taken from the longest point of the Anterior Nasal Spine-Posterior Nasal Spine line. The distance between the distal anterior canine teeth from the right buccal cortical bone to the left buccal cortical bone was measured. At the posterior region, the …

Periodontal Parameters And Anti-Cardiolipin Antibodies Following Periodontal Therapy In Chronic Periodontitis, Wan Majdiah Wan Mohamad, Noor Rashidah Saad, Siti Lailatul Akmar Zainuddin, Haslina Taib

Journal of Dentistry Indonesia

Anti-cardiolipin (anti-CL) antibodies are autoantibodies which are directed against cell membrane phospholipids. A significant number of periodontitis patients showed positive for anti-CL antibody. Objective: This study aimed to determine the periodontal parameters and anti-CL antibodies levels before and after non-surgical periodontal therapy in chronic periodontitis. Methods: This cross-sectional study had been carried out at Periodontal Clinic, Hospital Universiti Sains Malaysia, Kubang Kerian, Kelantan, Malaysia. Thirty five chronic periodontitis (CP) and 39 non-periodontitis (NP) patients underwent clinical periodontal examination at baseline. Plaque index (PI), gingival index (GI), periodontal pocket depth (PPD), and clinical attachment loss (CAL) were measured. Scaling …

Assessment Of Gingival Status And Gingival Overgrowth Among Immunosuppressed Patients In Universiti Sains Malaysia Hospital, Wan Majdiah Wan Mohamad, Syamimi Izzati Mat Zaid, Haslina Taib

Journal of Dentistry Indonesia

Drug-induced gingival overgrowth (DIGO) is defined as an abnormal growth of the gingiva due to adverse effect of some drugs such as immunosuppressant, calcium channel blocker, and anticonvulsant. Immunosuppressive drugs play an important role in controlling organ transplant rejection and were widely used to treat different diseases. Objective: Immunosuppressive drugs are used for prevention of transplant rejection and management of autoimmune disease. Drug-induced gingival overgrowth (GO) is abnormal growth of gingiva due to adverse effect of these drugs. This study aimed to assess the gingival status, the prevalence of gingival overgrowth and its associated factors among immunosuppressed patients. Methods …

Multiple Oral Ulcerations In A Seizure Patient With Undiagnosed Brain Arteriovenous Malformation, Ambar Kusuma Astuti, Febrina Rahmayanti

Journal of Dentistry Indonesia

Multiple ulcerations are rarely caused by a traumatic event, but seizures can induce repeated injury to the oral mucosa. A patient with a seizure history possesses a challenge in their dental management. Objective: In order to describe a case of multiple oral ulceration in a post-seizure patient with undiagnosed arteriovenous malformation (AVM) in the left parietal lobe and provide short guidelines for dentists in managing patient with a seizure history. Case report: A 23-years old female had multiple oral ulceration in the right and left buccal mucosa and her tongue. She reported having a seizure attack six days before. …

Class Ii Malocclusion And Traumatized Incisors In Adolescent With Twin Block And Fixed Appliance, Ying Hsu, Yu-Chuan Tseng, Shih-Chieh Chen

Taiwanese Journal of Orthodontics

This case report presents the outcome of atypical extraction and effect of Twin Block appliance on a growing adolescent. A 12-year-old boy who had complained about protrusive upper lips after being involved in a traffic accident. Tooth 11 was replanted at a local dental clinic, while tooth 21 was lost. In extra-oral examination, this patient had convex profile, obtuse nasolabial angle, and receded chin position. In intra-oral examination, bilateral Class II molar and canine relation were shown, the overjet was 11 mm between tooth 11 and 41; 7 mm between tooth 22 and 31; the overbite was 6 mm. Cephalometric …