Orthodontics and Orthodontology Commons^™

Treatment Options For Obstructive Sleep Apnea, Shao-Chih Hsieh, Szu-Ting Chou, Yu-Chuan Tseng

Taiwanese Journal of Orthodontics

Obstructive sleep apnea (OSA) is sleep-disordered breathing caused by the collapse of the upper airway. Because anatomical abnormalities of the narrow upper airway are undoubtedly the most critical cause of OSA, the available treatment methods for OSA mostly focus on these anatomical problems. The collapse of the respiratory tract is associated with different levels of upper airway obstruction. The obstruction of the airway can be divided into three parts: the nasal cavity, retropalatal region, and retrolingual region. This article summarizes some common OSA treatment methods, their underlying theories, and their effect on the upper airway.

Effects Of Different Occlusion Setups With A Surgery-First Approach And Simulated Presurgical Orthodontics On The Mandibular Position In Skeletal Class Iii Malocclusion, Gloria Shih-Wen Fan, Yu-Chih Wang, Chiung Shing Huang, Ellen Wen-Ching Ko

Taiwanese Journal of Orthodontics

Purpose: The purposes of this study were to compare the occlusion designs implemented for the surgery-first approach (SFA) and the resultant mandibular movements by different orthodontists, as well as to investigate whether presurgical dental alignment is associated with mandibular positioning.
Methods: This prospective study included 15 patients with skeletal Class III malocclusion who underwent orthognathic surgery through the SFA. Three orthodontists designed an occlusion setup for each case, which were assigned as SFA groups. The same group of patients, who received simulated presurgical orthodontics (SPO) through a virtual setup, composed the control group. The postoperative dental relationship and resultant mandibular …

Nonsurgical Correction Of Skeletal Class Iii Malocclusion With Evident Profile Change In An Adult Patient With Functional Shift And Low Mandibular Plane Angle, Ting-Yu Kuo, Chun-Liang Kuo

Taiwanese Journal of Orthodontics

This article reports the successfully utilize the range of functional shift to treat a 16-year-old female with a chief complaint of anterior crossbite. The patient had a skeletal Class III malocclusion with a protrusive mandible, anterior crossbite, low mandibular plane angle and facial asymmetry.

To achieve optimal correction of facial profile and occlusion, orthognathic surgery would be the first treatment option. However, this patient and her family declined the surgical option for higher cost. As a consequence, we use lower anterior bite turbo to disocclude posterior teeth for the posterior teeth extrusion. Class III elastics were applied for the correction …

Non-Surgical Treatment For A Patient With Condyle Head Resorption And Unstable Occlusion, Tsung-Jui Hsieh, Tzu-Ying Wu

Taiwanese Journal of Orthodontics

This case report presents multiple TADs application technique on managing difficult dental and skeletal malocclusion. This 36-year-old female who was diagnosed as rheumatoid arthritis and had been under medication control for 6 years. In addition, she was diagnosed as condyle erosion with bilateral crepitus sound during jaw movement. The characters of occlusion including Class II malocclusion with increased overjet (6 mm), multiple posterior teeth missing and super-erupted teeth 17 and 26, and unstable occlusion. During phase I, patient was referred for occlusal splint treatment, and we followed the progression of condylar condition. At phase II, surgical intervention was suggested but …

Non-Surgical And Non-Extraction Orthodontic Treatment Of An Excess Reverse Bite With Anterior Open Bite, Jung-Chi Hsu, I-Hua Liu, Chun-Liang Kuo, Chun-Hsiu Yang, Yu-Ling Tsai, Chung-Li Wang

Taiwanese Journal of Orthodontics

This 13-year-old female had a severe Angle’s Class III malocclusion with an excessive negative overjet 7 mm, anterior open bite 2 mm, a prognathic chin and a concave lateral profile. But this patient and her parents refused orthognathic surgery. Finally, she was treated with a non-surgical and non-extraction approach. The treatment plan consisted of total distalization of mandibular dentition with bilateral temporary anchorage device (TAD) and maxillary incisor extrusion with vertical elastics. The active treatment period was 34 months. Normal overbite, overjet, and acceptable profile were achieved.

Applications Of Artificial Intelligence In Orthodontics, Hsien-Ching Hung, Yi-Chin Wang, Yu-Chih Wang

Taiwanese Journal of Orthodontics

Artificial intelligence (AI) technology is a tool for finding insights in different kind of information in medical field. The purpose of this article was giving a brief introduction to applications of AI in orthodontic treatment. The reviewed literatures were further categorized into (1) extraction or non-extraction therapy in orthodontic treatment, (2) orthognathic surgery, (3) segmentation and landmark identification, (4) growth prediction, (5) cleft related studies, and (6) TMD classification.

Surgical Methods To Accelerate Tooth Movement, Miao-Jing Chen, Shih-Chieh Chen, Jung-Hsuan Cheng, Yu-Chuan Tseng Dds, Mds, Phd

Taiwanese Journal of Orthodontics

Comprehensive orthodontic treatment usually takes 1–3 years to finish the details. The treatment duration depends on the complexity of treatment. Longer treatment times may increase the risk of root resorption, oral hygiene–related problems such as white spot lesion or dental caries, and periodontal destruction. Several methods, such as surgical-assisted procedures, drugs, and physical/mechanical stimulation methods, may accelerate tooth movement and shortened whole treatment time. This article reviews various surgical-assisted procedures and how the surgical method that can effectively shorten the treatment time. The advantages and disadvantages of various technique were also assessed.

Treatment Efficacy Of Invisalign: Literature Review Update, Meng-Huan Tsai, Stephanie Shih-Hsuan Chen, Yi-Jane Chen, Jane Chung-Chen Yao

Taiwanese Journal of Orthodontics

Purpose: Inconsistency between computer prediction and actual tooth movement in Invisalign treatment always limits clinical judgment. The objective of this review was to update the evidence on the treatment efficacy of the Invisalign appliance.
Material and Methods: Medical databases were screened for relevant peer-reviewed articles from 2000 to 2018 for the use of Invisalign as a treatment intervention. All human studies other than case reports and case series were included.
Results: A total of 25 articles (4 RCTs, 6 prospective cohort studies, 15 retrospective cohort studies) were included. Treatment outcomes have been improving over the past 17 years. Invisalign treatment …

Health-Related Anxiety In The Management Of Oral Soreness In An Hivseropositive Patient, Masita Mandasari, Zulvia Oktanida Syarif, Febrina Rahmayanti

Journal of Dentistry Indonesia

The number of people living with HIV (PLHIV) has been increasing since the first known case in the early 1980s. However, PLHIV can also experience comorbidities, such as health anxiety. In the oral cavity, anxiety is often associated with the etiology of parafunctional habits. Anxiety can be measured using self-administered instruments, such as the Hospital Anxiety and Depression Scale (HADS) and Short-Health Anxiety Inventory (SHAI), which is specifically used in the medical setting. Objectives: We are describing a case of HIV positive patient with health anxiety who presented to the oral medicine clinic in our hospital with a complaint of …

Differential Diagnosis And Histopathological Analysis Of Localized Gingival Overgrowths: Study Of 218 Cases From Northeast Thailand, Lordjie Marr Morilla, Ajiravudh Subarnbhesaj, Poramaporn Klanrit

Journal of Dentistry Indonesia

Localized gingival overgrowths (LGOs) are relatively common clinical findings. These lesions can be associated with chronic irritation, infections, or they can represent benign or malignant tumors that can either be primary or metastatic. The etiology of these lesions is multifactorial, but the most prevalent cause is reactive hyperplasia and inflammation induced by dental plaque. Objective: This study presents the prevalence of LGOs in Northeast Thailand and identifies the most common LGOs in the region. Methods: A series of 218 LGO cases was studied. Results: Pyogenic granuloma (PG), gingival squamous cell carcinoma (GSCC), and peripheral ossifying fibroma (POF) were the three …

Evaluation Of Clinical Single Dental Implants Made Between 2013 And 2017, Zozan Erdoğmuş

Journal of Dentistry Indonesia

Objective: This retrospective study aimed to determine the profile of patients who underwent single tooth implants between 2013 and 1017 and to evaluate long-term follow-up and success. Methods: The results of 79 patients who underwent single dental intra-bone dental implantation in Diyarbakır Oral and Dental Health Hospital between 2013 and 2017 were evaluated separately in terms of gender, age, implanted area and number, systemic diseases affecting implant health, and missing implants. Results: In this study, single tooth implants were evaluated in 79 patients with a mean age of 39.55 years in men and 30.44 years in women. …

Management Of Atypical Symmetrical Ankylosis Of Maxillary Deciduous First Molars With Permanent Successors: A Single Case Report, Kemal Gulduren, Aylin İslam

Journal of Dentistry Indonesia

Dentoalveolar ankylosis is the union between the tooth root and the dentoalveolar bone. Clinically, the affected tooth is unsuccessful to erupt, exhibits an infraocclusal position within the dentoalveolar arch, elicits a metallic sound on percussion, and has reduced or absent mobility. Objective: This single case report illustrates the management of idiopathically ankylosed maxillary deciduous first molars. Case report: The patient was a 6-year-old female with maxillary deciduous first molars in infraocclusal position due to idiopathic ankylosis. The ankylosed deciduous teeth were monitored regularly. After a 27-month follow-up, the infraocclusion became severe. No vertical deficiencies in other alveolar regions were detected. …

Retrospective Evaluation Of The Changes In The Nasal And Pharyngeal Airway Volume After Miniscrew Assisted Rapid Palatal Expansion (Marpe) Appliance, Joanna Song

Graduate Theses, Dissertations, and Problem Reports (ETD)

Background and Objectives: A transverse deficiency of the maxilla is a pervasive skeletal problem that can affect almost a quarter of the primary dentition population. The interesting relationship between rapid maxillary expansion (RME) and its effects on the surrounding airway is not well described in the literature. For today’s contemporary orthodontist, there are a variety of rapid palatal expanders (RPE) and expansion protocols to prescribe for patient treatment. Of late, the miniscrew-assisted RPE (MARPE) has been receiving attention by clinicians because of its increased orthopedic effects when compared to conventional RPE while avoiding the surgical procedure needed with SARPE. …

A Comparison Of Three-Dimensional Printing Technologies On The Precision, Trueness, And Accuracy Of Printed Retainers, Owais A. Naeem

Theses and Dissertations

Purpose: The aim of this study was to evaluate the differences in the precision, trueness, and accuracy of 3D printed orthodontic clear retainers produced using printer systems with various printing technologies.

Methods: Retainers (n=15) were printed using four different 3D printers: a stereolithography (SLA) printer, two different digital light processing (DLP and cDLP) printers, and a polyjet photopolymer (PPP) printer. The 3D printed retainers were transformed into a digital file through a cone-beam computed tomography scan that was compared to the original image using a 3D superimposition analysis software. At previously chosen landmarks (R6, L6, R3, L3, R1, L1) retainers …

Cephalometric Study Of Treated Orthodontic Patients With Acceptable Esthetic Profiles Compared To Adult Thai Normative Values, Visessan Pornsirianand

Chulalongkorn University Theses and Dissertations (Chula ETD)

Objective: This study aimed to compare cephalometric variables between esthetically acceptable normal, concave, and convex profile groups as well as between each group and adult Thai normative values. Materials and Methods: Three-hundred and three profile silhouettes from post-treatment lateral cephalometric radiographs of 18–37 year-old orthodontic patients were scored by 5 Thai orthodontists and 15 orthodontic patients. The Likert 5-point scale was used to judge the attractiveness. Two-hundred and seven radiographs passing the minimum score of 3 were divided into acceptable normal, concave, and convex profile (AN, ACC, ACV) groups. Thirty-five skeletal, 17 dental, and 34 soft tissue cephalometric variables were …

Comparison Of Skeletal And Dentoalveolar Changes Between Two Bone-Borne Maxillary Expanders, Mohamad Sarraj

Graduate Theses, Dissertations, and Problem Reports (ETD)

Introduction: Bone-borne maxillary expander (BBME) are designed to provide additional anchorage to widen the maxillary arch for patients who exhibit maxillary transverse deficiency. One form of BBME is the hybrid BBME which uses mini-implants (bone-borne) and posterior teeth (tooth-borne) as anchorage for maxillary expansion. The other form of BBME is absolute BBME which only uses mini-implants as anchorage. It is not clear in the literature if there is a difference in skeletal and dental changes with these two types of expanders. The objective of this study was to compare the skeletal, dentoalveolar, and periodontal changes between the hybrid and the …

Clear Aligner Therapy Vs. Traditional Brackets On Smile Arc, Sarah Elizabeth Larue

Graduate Theses, Dissertations, and Problem Reports (ETD)

Background and Objectives: More so than ever, the public is becoming exceedingly aware of esthetics, and will evaluate their treatment outcome based upon the improvement to their smile and overall enhancement of their facial appearance. Smile arc is considered to be a key component of facial esthetics. Literature has demonstrated that orthodontic treatment mechanics utilizing traditional brackets and wires can cause flattening of the smile arc and that smiles with flatter arcs are judged to be less attractive. The aim of this study was to determine whether clear aligner therapy can help to preserve or improve the smile arc …

Effects Of Pilot Hole Size On Miniscrew Insertion Torque And Synthetic Bone Transparency, Chutimont Teekavanich

Chulalongkorn University Theses and Dissertations (Chula ETD)

Orthodontic miniscrews have gained popularity; however, they have some drawbacks, including screw loosening due to bone resorption caused by excess microdamage during screw insertion. Pilot hole preparation through the cortical bone is considered beneficial to avoid such microdamage, while an overly large pilot hole impairs primary stability. Hence, we used a human bone analogue to evaluate the microdamage and primary stability to estimate the optimal pilot hole size that would minimize the screw loosening risk. Ti6Al4V miniscrews and 1.0-mm-thick synthetic cortical bone pieces were prepared. Various compressive loads were applied in indentation tests to bone surfaces, and the microdamaged areas …

Intermittent Hypoxia Induces Mandibular Growth Arrest And Invokes A Different Response In Condylar And Tibial Cartilage In Infant Rats, Kochakorn Lekvijittada

Chulalongkorn University Theses and Dissertations (Chula ETD)

Intermittent hypoxia (IH) has been associated with skeletal growth. However, the influence of IH on cartilage growth and metabolism is unknown. We compared the effects of IH on chondrocyte proliferation and maturation in the mandibular condyle fibrocartilage and tibial hyaline cartilage of 1-week-old male Sprague-Dawley rats. The rats were exposed to normoxic air (n = 9) or IH at 20 cycles/h (nadir, 4% O2; peak, 21% O2; 0% CO2) (n = 9) for 8 h each day. IH impeded body weight gain, but not tibial elongation. IH also increased cancellous bone mineral and volumetric bone mineral densities in the mandibular …

Masticatory Performance And Self-Assessed Masticatory Ability In Orthodontic Patients Using Removable Posterior Biteplate And Orthodontic Banding Cement For Bite-Raising: A Randomized Clinical Trial, Pokchat Bunpu

Chulalongkorn University Theses and Dissertations (Chula ETD)

Objective: To evaluate the masticatory performance and the masticatory ability before and after bite-raising with removable posterior biteplate and with orthodontic banding cement and compare the long-term effects between the two different bite-raising methods. Materials and Methods: The 12 healthy, orthodontic, patients who have natural permanent dentition with healthy periodontium and required the bite-raising in the comprehensive fixed orthodontic appliances from the Faculty of Dentistry, Chulalongkorn University were collected (mean age 22.58±8.45 years). A group of patients was randomly divided into two groups of equal size. The first group used removable posterior biteplate and the other group used orthodontic banding …