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Orthodontics and Orthodontology Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Keyword
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- Angle Class II division 2 malocclusion; deep bite; gummy smile; Improved super-elastic Ti-Ni alloy wire (ISW). (1)
- Angle’s Class II division 2 malocclusion; bilateral scissors-bite; deep overbite; canted anterior occlusal plane; temporary anchorage devices (1)
- Anterior open bite; molar intrusion; posterior subapical osteotomy (PSO) (1)
- Bimaxillary protrusion; canine substitution; atypical tooth extraction. (1)
- Class II division 2 malocclusion; deep overbite. (1)
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- Class III malocclusion; anterior open bite (1)
- Clear aligner therapy (CAT); digital orthodontics; 3D printing; Invisalign; aligner orthodontics. (1)
- Congenital missing tooth; maxillary lateral incisor agenesis (MLIA); canine substitution. (1)
- Corrosion; home bleaching; metal ion release; stainless steel orthodontic brackets. (1)
- Curve of Spee; craniofacial morphology; orthodontic treatment. (1)
- Digital orthodontics; intraoral scanner; digital impression (1)
- Growth spurt; oral function; pre-adjusted appliances; high pull headgear (HPHG); anterior bite turbo. (1)
- Impacted maxillary incisor; root dilaceration; closed eruption technique; transpalatal arch (TPA) (1)
- Maxillary expansion; transverse maxillary deficiency; mini-implant assisted rapid palatal expansion (MARPE). (1)
- Maxillary skeletal expansion; facemask; alternating rapid maxillary expansion and constriction (Alt-RAMEC) (1)
- Midpalatal suture; sutural maturation; maxillary expansion (1)
- Orthognathic surgery; skeletal Class III; surgery-first approach; surgical occlusion. (1)
- Rapid maxillary expander (RME); facemask (1)
- Rapid maxillary expansion; Hyrax expander; edgewise therapy. (1)
- Structural cephalometric analysis; best-fit analysis; metallic implant analysis. (1)
- Structural superimposition; metallic implant analysis; occlusogram analysis; molar location (1)
- Surgical orthodontics; skeletal Class III; anterior open bite; Class III malocclusion; ankylosed maxillary molar. (1)
- Tipped mandibular second molar; molar uprighting. (1)
- Tooth extraction in orthodontics; third molar uprighting; external root resorption caused by impacted tooth. (1)
- Two-jaw orthognathic surgery (1)
- Two-phase orthodontic treatment; Class II division 1 malocclusion; functional appliance (1)
Articles 1 - 25 of 25
Full-Text Articles in Orthodontics and Orthodontology
Nonsurgical Treatment Of An Adult Patient With Bilateral Scissors-Bite And Class Ii Division 2 Malocclusion, Wei-Cheng Fu, Yu-Ling Cheng, Chia-Yi Pan, Ming-Juean Su, Yuen-Yung Tsang
Nonsurgical Treatment Of An Adult Patient With Bilateral Scissors-Bite And Class Ii Division 2 Malocclusion, Wei-Cheng Fu, Yu-Ling Cheng, Chia-Yi Pan, Ming-Juean Su, Yuen-Yung Tsang
Taiwanese Journal of Orthodontics
This report illustrates a 20 years old female presented a Class II division 2 malocclusion with deep overbite, gummy smile, canted maxillary anterior occlusal plane, low mandibular plane angle and bilateral scissors-bite. Angle's Class II division 2 malocclusion needs to be treated by correcting the inclination of maxillary incisors and lower lip posture. Selective bonding of maxillary anterior teeth and molars were performed to level the occlusal plane and gingival line, thus creating a consonant smile arc. Disocclusion was necessary by using a removable bite plate. Maxillary second premolars and second molars, lower third molars were extracted. The aim was …
Two-Phase Management In A Developing Class Iii Malocclusion With The Aid Of Rapid Maxillary Expander And Facemask, Chih-Hsiang Chan, Chin-Yun Pan, Jung-Hsuan Cheng
Two-Phase Management In A Developing Class Iii Malocclusion With The Aid Of Rapid Maxillary Expander And Facemask, Chih-Hsiang Chan, Chin-Yun Pan, Jung-Hsuan Cheng
Taiwanese Journal of Orthodontics
A 7-year 10-month-old boy with skeletal Class III malocclusion was treated in two phases. In phase one, rapid maxillary expansion (RME) and facemask was applied for early intervention in a cervical vertebral maturation (CVM) stage of CS2. After RME and facemask treatment, decompensation of maxillary and mandibular incisors was noted, as well as an improved skeletal Class III jaw relationship with reduction of the A point-nasion-B point (ANB) angle. Later in phase two, a full mouth fixed edgewise appliance was begun to correct the details of malocclusion. The total treatment duration was 5 years and 5 months (stage 1, 9 …
Cephalometric Analysis Of Growth And Treatment With The Structural Technique: A Review Of Its Background And Clinical Application, Ib Leth Nielsen
Cephalometric Analysis Of Growth And Treatment With The Structural Technique: A Review Of Its Background And Clinical Application, Ib Leth Nielsen
Taiwanese Journal of Orthodontics
The aim of this review is to provide the fundamental basis and scientific evidence for the so-called “structural technique.” In this article we will discuss the benefits and challenges of this technique as well as present and compare it to the so-called “best fit” technique. Furthermore, we will introduce the three parts of the analysis, most commonly used for evaluation of growth and treatment changes. The “structural technique” developed by Professor Arne Björk and his associate Dr. Vibeke Skieller is the result of their longitudinal studies using metallic implants as biological markers. These studies showed that most of the information …
Do We Really Know Where The Molar Teeth Are On The Lateral Headfilm? A Recommendation For A More Precise Way To Locate The Molars On The Lateral Headfilm, Ib Leth Nielsen, Chung-Chen Jane Yao
Do We Really Know Where The Molar Teeth Are On The Lateral Headfilm? A Recommendation For A More Precise Way To Locate The Molars On The Lateral Headfilm, Ib Leth Nielsen, Chung-Chen Jane Yao
Taiwanese Journal of Orthodontics
Objective: The aim of this study demonstrates an improved method for determining the exact molar positions on the lateral headfilm. Previously this position was located by visual inspection of the headfilm. We are testing the precision of visual determination compared to using occlusogram measurements. Materials and Methods: In a sample of 34 subjects treated for Class II malocclusion, we examined the pre and post treatment headfilms and compared molar positions determined by visualization with occlusogram measurements. Results: Our data showed that in 15% of the cases there were no differences between the two methods, in 50% the differences were 1 …
Two-Phase Orthodontic Treatment In Class Ii Division 1 Malocclusion, Wen-Hui Hsieh, Hui-I Chen, Chin-Hsiang Chan
Two-Phase Orthodontic Treatment In Class Ii Division 1 Malocclusion, Wen-Hui Hsieh, Hui-I Chen, Chin-Hsiang Chan
Taiwanese Journal of Orthodontics
A two-phase treatment comprising functional orthopedic therapy and fixed orthodontic therapy is often proposed for pubescent patients with Class II division 1 malocclusion. Mandibular retrognathism is a more common underlying cause of Class II skeletal discrepancy than the maxillary prognathism. In such cases, an activator is a widely used functional orthopedic appliances to enhance the mandibular growth. After resolving the sagittal problem by using the functional appliances, the biomechanical considerations of the anchorage requirement could be simplified in the second phase fixed appliance therapy, and the total treatment duration could be shorter. This case report describes a two-phase orthodontic treatment …
Application Of Combined Maxillary Skeletal Expander And Facemask Treatment With An Alternating Rapid Maxillary Expansion And Constriction Protocol In A Female Adolescent With A Class Iii Skeletal Relationship, Li-Fang Hsu, Kai-Wen Yu, Chung-Ji Liu, Jenny Zwei-Chieng Chang
Application Of Combined Maxillary Skeletal Expander And Facemask Treatment With An Alternating Rapid Maxillary Expansion And Constriction Protocol In A Female Adolescent With A Class Iii Skeletal Relationship, Li-Fang Hsu, Kai-Wen Yu, Chung-Ji Liu, Jenny Zwei-Chieng Chang
Taiwanese Journal of Orthodontics
A 13-year-old female patient presented with a chief complaint of anterior crossbite and chin prognathism. She had a skeletal Class III relationship with a brachyfacial vertical pattern. Anterior crossbite exhibited maximum intercuspation–centric relation shift, leading to an edge to-edge incisal position. On the basis of this patient’s chronological age, it was too late to perform conventional early treatment of Class III cases, which includes rapid palatal expansion combined with facemask or chincap therapy. After discussing treatment options with the patient and her parents, we decided to try combined maxillary skeletal expander and facemask treatment with an alternating rapid maxillary expansion …
Assessment Of Midpalatal Suture Maturation For Orthodontic Diagnosis And Treatment Planning, Chiao-Yi Kao, Chin-Yun Pan, Hong-Po Chang, Yu-Chuan Tseng
Assessment Of Midpalatal Suture Maturation For Orthodontic Diagnosis And Treatment Planning, Chiao-Yi Kao, Chin-Yun Pan, Hong-Po Chang, Yu-Chuan Tseng
Taiwanese Journal of Orthodontics
Accurately estimating the maturation of a midpalatal suture can improve the success rate of a maxillary expansion procedures. The craniofacial sutural maturation is an essential consideration in the choice between non-surgical and surgical methods of maxillary expansion. The maturation of a midpalatal suture can be assessed in several ways. This article reviews the literatures on the assessment of midpalatal suture maturation and its importance for orthodontic diagnosis and treatment planning.
Surgical Occlusion Setup In Orthognathic Surgery Using Surgery-First Approach For Skeletal Class Iii Deformity: A Systematic Review, Shu Hsien Lo, Yu-Fang Liao
Surgical Occlusion Setup In Orthognathic Surgery Using Surgery-First Approach For Skeletal Class Iii Deformity: A Systematic Review, Shu Hsien Lo, Yu-Fang Liao
Taiwanese Journal of Orthodontics
Objective: Surgery-first orthognathic surgery is increasing in popularity because of reduced treatment time, efficient tooth decompensation, and early improvement in facial esthetics. However, it remains difficult due to the surgical occlusion setup. We systematically reviewed the literature in order to determine the guidelines used for surgical occlusion setup in orthognathic-first surgery for skeletal Class III deformity. Material and Methods: The literature was searched using PubMed, Medline (Ovid), Cochrane Library, Web of Science and Google Scholar databases from January 1931 to June 2017. We limited the search to publications in English. Two independent investigators used specific inclusion and exclusion criteria to …
Orthodontic Correction Of Class Ii Division 2 Malocclusion, Kun-Feng Lee, Yu-Chuan Tseng, Hong-Po Chang, Szu-Ting Chou
Orthodontic Correction Of Class Ii Division 2 Malocclusion, Kun-Feng Lee, Yu-Chuan Tseng, Hong-Po Chang, Szu-Ting Chou
Taiwanese Journal of Orthodontics
Class II division 2 malocclusion has low incidence rate of only 1% in Taiwan. The criteria of diagnosis and treatment consideration is more challenging as compared to other types of malocclusions. The consideration of orthodontic biomechanics could be sophisticated in facing the correction of the molar relationship and the angulation of the anterior teeth. This article discusses the clinical diagnosis and treatment mechanics of Class II division 2 malocclusion.
Maxillary Expansion: From Past To Present, Shih-Chieh Chen, Hong-Po Chang, Yu-Chuan Tseng
Maxillary Expansion: From Past To Present, Shih-Chieh Chen, Hong-Po Chang, Yu-Chuan Tseng
Taiwanese Journal of Orthodontics
Maxillary expansion is a common treatment option for upper crowded dentition and posterior lingual crossbite in children and adolescents. As the midpalatal suture is not yet completely interlocked at these ages, the midpalatal suture can be opened via maxillary expansion to increase the length and width of the upper arch. This solves the problems of posterior crossbite and upper crowded dentition. Since the midpalatal suture is stiff in adults, many clinicians believe that adults require surgical intervention to achieve maxillary expansion. However, recent reports indicated that several cases have been treated successfully with the aid of TADs for maxillary expansion. …
Clinical Use Of Contemporary Clear Aligner Therapy, Chun-Te Ho, Chien-Wei Chao, Chia-Tze Kao
Clinical Use Of Contemporary Clear Aligner Therapy, Chun-Te Ho, Chien-Wei Chao, Chia-Tze Kao
Taiwanese Journal of Orthodontics
Clear aligner therapy (CAT) is an increasing popular alternative to conventional bracket therapy. This review summarized contemporary data regarding the history of CAT. The information regarding the advantages and disadvantages of CAT, biomechanical force and biological considerations, controlling orthodontic tooth movement (OTM) would be discussed in this review. The CAT is well accepted for their esthetics, comfort, good care of oral hygiene and periodontal status and suitable for interdisciplinary dental treatment. However, CAT was also considered as difficult compliance for the patients, uneasy to be handled by clinicians, unprecise root movement, difficult for the postoperative fixation in cases receiving orthognathic …
Correction Of Bimaxillary Protrusion By Extraction Of Incisors And Canine Substitution, Chung-Li Wang, Chun-Liang Kuo, I-Hua Liu, Chun-Hsiu Yang
Correction Of Bimaxillary Protrusion By Extraction Of Incisors And Canine Substitution, Chung-Li Wang, Chun-Liang Kuo, I-Hua Liu, Chun-Hsiu Yang
Taiwanese Journal of Orthodontics
The maxillary six anterior teeth play important roles in esthetics and oral function. Treatments for missing maxillary lateral incisors either by space closure or space preservation need multiple clinical considerations. This case report presents an orthodontic treatment of a 33-year-old female patient who had a convex profile with lip incompetence, missing lower molars and poor prognosis of bilateral maxillary lateral incisors. The atypical extraction in treatment plan consisted of removing lateral incisors instead of premolars to retract the anterior teeth. The improvement of facial profile and lip posture was achieved and the anterior teeth esthetics was further rehabilitated with prosthesis. …
Use Improved Super-Elastic Ti-Ni Alloy Wire To Correct Class Ii Division 2 Malocclusion With Unstable Mandibular Position, Yu-Cheng Lo, Yuan-Hou Chen, Hsien-Hsiung Chiang, Jian-Hong Yu
Use Improved Super-Elastic Ti-Ni Alloy Wire To Correct Class Ii Division 2 Malocclusion With Unstable Mandibular Position, Yu-Cheng Lo, Yuan-Hou Chen, Hsien-Hsiung Chiang, Jian-Hong Yu
Taiwanese Journal of Orthodontics
The case reported the use of improved super-elastic Ti-Ni alloy wire (ISW), which was developed by Tokyo Medical and Dental University, to correct a case of Angle Class II division 2 case with unstable mandibular position. An adult 28-year old women came to our clinic with a chief complaint of poor dental alignment. Clinical examination revealed a Class II division 2 malocclusion. The ISW was used to relieve the anterior deep bite and crowding. Intermaxillary elastics (IMEs) were also used to achieve a correct and stable mandibular position and solid interdigitation. The outcome indicated achievement in correction of arch coordination, …
Orthodontic Treatment Management For Congenitally Missing Maxillary Lateral Incisors, Yu-Ting Sun, Tao-Wei Chang, Po-Yu Yang, Tzu-Hsin Lee
Orthodontic Treatment Management For Congenitally Missing Maxillary Lateral Incisors, Yu-Ting Sun, Tao-Wei Chang, Po-Yu Yang, Tzu-Hsin Lee
Taiwanese Journal of Orthodontics
Congenitally missing of maxillary lateral incisor is one of the most common agenesis anomalies. The purpose of this review was to present the orthodontic treatment of choice for a malocclusion with missing maxillary lateral incisors. Treatment plans consist of three categories: canine substitution, single-tooth implant and tooth supported restorations. Among which the least invasive option to achieve satisfying function and aesthetics is canine substitution. Factors such as the profile of the patient, the space analysis of dentition, and the color and shape of canine should be taken into consideration for treatment choice.
An Overview Of Digital Intraoral Scanners: Past, Present And Future- From An Orthodontic Perspective, Henry Hann-Min Hwang, Chi-Wei Chou, Yi-Jane Chen, Chung-Chen Jane Yao
An Overview Of Digital Intraoral Scanners: Past, Present And Future- From An Orthodontic Perspective, Henry Hann-Min Hwang, Chi-Wei Chou, Yi-Jane Chen, Chung-Chen Jane Yao
Taiwanese Journal of Orthodontics
Digital intraoral scanners(IOSs) have become the ongoing trend in contemporary digital orthodontics. This article aims to elaborate the past, present, and future of IOSs from an orthodontist’s perspective. We summarized the comparison between digital and conventional impression in literatures. Also, we discussed about the imaging principles and characteristics of different IOSs. Although unable to recommend the single best option, a checklist of consideration when choosing an IOSs was developed after trailing the mainstream commercial products. With technology revolution, embracing the IOSs may be essential for those interested in future digital orthodontic workflow.
Surgical-Orthodontic Treatment For A Patient With Skeletal Class Iii Deformity And Anterior Open Bite, Wei-Chih Hung, Wei-Cheng Lee, Yi-Chieh Chen, Lih-Juh Chou, Chung-Hsing Li, Gunng-Shinng Chen
Surgical-Orthodontic Treatment For A Patient With Skeletal Class Iii Deformity And Anterior Open Bite, Wei-Chih Hung, Wei-Cheng Lee, Yi-Chieh Chen, Lih-Juh Chou, Chung-Hsing Li, Gunng-Shinng Chen
Taiwanese Journal of Orthodontics
Anterior open bite is a complicated problem due to its multiple etiologies, including anatomical, environmental, and genetic factors. The complexity of skeletal class III deformity depends on the severity of bony discrepancy, especially with anterior open bite. Surgical-orthodontic treatment is often required for complete correction. We present the case of an 18-year-old female patient who had been diagnosed with skeletal Class III deformity and an anterior open bite. The patient underwent a well-planned sequential treatment with surgeryfirst approach. Two-jaw surgery with maxillo−mandibular complex clockwise rotation had improved her skeletal deformities, smile arc, dental inclination and facial harmony. The total orthodontic …
Surgical-Orthodontic Correction In Skeletal Class Iii Anterior Open Bite With An Ankylosed Maxillary Molar, Chin Suppapinyaroj, Ellen Wen-Ching Ko, Yu-Ray Chen
Surgical-Orthodontic Correction In Skeletal Class Iii Anterior Open Bite With An Ankylosed Maxillary Molar, Chin Suppapinyaroj, Ellen Wen-Ching Ko, Yu-Ray Chen
Taiwanese Journal of Orthodontics
This case report describes the treatment of a 24-year-old woman with chief complaints of anterior open bite and long lower jaw. She had a skeletal Class III with concave facial profile, hyperdivergent facial pattern, long lower facial height, and excessive anterior open bite. Intraoral examination revealed 26 tooth ankyloses and 32, 42 congenital missing teeth. The 26 was highly-locked, showing root penetrating into the sinus floor. Treatment was performed with a modified surgery-first approach, which included 5 months of presurgical alignment phase to upright the 27 mesially-tilted tooth and to correct upper dental midline by 14 extraction. The surgeries included …
Orthodontic Treatment Combined With Maxillary Posterior Subapical Osteotomy In Severe Anterior Open Bite, Jui-Hsien Yang, Yun-Yun Wu
Orthodontic Treatment Combined With Maxillary Posterior Subapical Osteotomy In Severe Anterior Open Bite, Jui-Hsien Yang, Yun-Yun Wu
Taiwanese Journal of Orthodontics
A 29-year-old woman presented with severe anterior open bite (−6 mm). Eight-month presurgical orthodontic treatment involving arch rounding and leveling was performed, with the upper arch treatment from canine to canine only. Bilateral maxillary posterior subapical osteotomy (PSO) for posterior intrusion was performed for 6-week fixation. Postsurgical orthodontic treatment followed, resulting in a total treatment time of 19 months. Cephalometric X-ray superimposition revealed that the anterior overbite was corrected by 9 mm (from -6mm to +3 mm), and the lower mandibular plane angle changed from 38.4° to 35.4°. Therefore, counterclockwise rotation of the mandible improved the facial profile. In conclusion, …
Decision Making On Tooth Extraction In Orthodontics, Yu-Ting Sun, Chia-Tze Kao
Decision Making On Tooth Extraction In Orthodontics, Yu-Ting Sun, Chia-Tze Kao
Taiwanese Journal of Orthodontics
Extraction or non-extraction is an issue that we face in our daily orthodontic practice. Before deciding the treatment plan, we have to examine the case carefully. Orthodontic tooth extraction involves more than just the need to create space in the arches but also the concerns of facial esthetics and treatment stability. The report presented a case of teenage boy with severe external root resorption of tooth 27, 37, 46, 47 which caused by impaction of third molars and a supernumerary premolar. Patient already had orthodontic treat-ment before and did not favor a comprehensive orthodontic treatment again. Tooth extraction of 27, …
Consideration Of Facial Growth And Oral Function With The Use Of High Pull Headgear, Shao-Chun Yang, Ming-Jeaun Su, Yuen-Yung Tsang, Huei-Mei Tsai
Consideration Of Facial Growth And Oral Function With The Use Of High Pull Headgear, Shao-Chun Yang, Ming-Jeaun Su, Yuen-Yung Tsang, Huei-Mei Tsai
Taiwanese Journal of Orthodontics
High pull headgear with face bow has been a popular treatment modality for upper first molars distalization and anchorage enhancement. It can effectively inhibit the eruption of upper molars, enhance condylar growth to contribute a forward movement of the mandible and further improve the bite and lip incompetence. The compliance from patients is particularly important for favorable treatment outcome. The patient was an 11-year-old boy with features of Class II division 1 malocclusion. Patient’s growth spurt seemed to be continued in the recent year. Lip biting and thumb sucking habits were suspected as the causes of patient’s malocclusion. A combination …
Management Of Tipped And Impacted Mandibular Second Molars, Jung-Chun Yeh, Chien-Wei Chao, Yu-Tin Wu, Chih-Chen Chou, Chia-Tze Kao
Management Of Tipped And Impacted Mandibular Second Molars, Jung-Chun Yeh, Chien-Wei Chao, Yu-Tin Wu, Chih-Chen Chou, Chia-Tze Kao
Taiwanese Journal of Orthodontics
Congenitally missing of maxillary lateral incisor is one of the most common agenesis anomalies. The purpose of this review was to present the orthodontic treatment of choice for a malocclusion with missing maxillary lateral incisors. Treatment plans consi
Correction Of 2 Impacted Dilacerated Maxillary Central Incisors With Collaborative Surgical And Orthodontic Treatment, Yi-Hsin Chang, Jung-Hsuan Cheng
Correction Of 2 Impacted Dilacerated Maxillary Central Incisors With Collaborative Surgical And Orthodontic Treatment, Yi-Hsin Chang, Jung-Hsuan Cheng
Taiwanese Journal of Orthodontics
Impaction in maxillary central incisor is not as common in comparison with maxillary canine, whereas it causes more occlusal and esthetic impact due to its visible location. This case reported a combined surgical and orthodontic treatment on two horizontally impacted maxillary central incisors with dilacerated roots. The treatment included 2 stages. In the first stage, the dental space was regained and surgical exposure with closed eruption technique was applied. In the second stage, excisional gingivectomy combined with orthodontic traction were used to reposition both teeth into alignment. During orthodontic treatment, transpalatal arch (TPA) was applied for intraoral anchorage. The maxillary …
Curve Of Spee: Development And Orthodontic Leveling, Yu-Hsin Lee, Yu-Chuan Tseng
Curve Of Spee: Development And Orthodontic Leveling, Yu-Hsin Lee, Yu-Chuan Tseng
Taiwanese Journal of Orthodontics
Curve of Spee (CoS) is characterized as human occlusal curvature viewed in the sagittal plane. This naturally occurring phenomenon has clinical importance in orthodontics and prosthodontic dentistry. The purpose of this article is to examine the formation of the CoS regarding of when, how, or why the CoS develops. The mechanism of orthodontic leveling the CoS will be discussed.
Effect Of Home Bleaching Agents On The Surface Corrosion Of Stainless Steel Orthodontic Brackets, Tzu-Hsin Lee, Chih-Yuan Wang, Po-Yu Yang
Effect Of Home Bleaching Agents On The Surface Corrosion Of Stainless Steel Orthodontic Brackets, Tzu-Hsin Lee, Chih-Yuan Wang, Po-Yu Yang
Taiwanese Journal of Orthodontics
Introduction: This in vitro study evaluates the home bleaching treatment effect on the surface corrosion of stainless steel orthodontic brackets. Materials and Methods: Three types of brackets, 3M Unitek (U), Dentaurum (D) and Tomy (T), were immersed in either one of six bleaching treatments at 37 ℃ for 28 days. After immersion, the amounts of iron, chromium, and nickel ions released from the brackets were detected using inductively coupled plasma mass spectrometry (ICP-MS). A scanning electron microscope and an atomic force microscope were used to analyze the surface morphology and roughness, respectively. Two-way ANOVA and Tukey’s post-hoc, α = 0.05, …
Rapid Maxillary Alveolar Expansion In Maxillary Severe Space Deficiency, Mei-Yin Chen, Wen-Ken Tai, Heng-Ming Mark Chang, Hoi-Shing Luk, Chia-Tze Kao
Rapid Maxillary Alveolar Expansion In Maxillary Severe Space Deficiency, Mei-Yin Chen, Wen-Ken Tai, Heng-Ming Mark Chang, Hoi-Shing Luk, Chia-Tze Kao
Taiwanese Journal of Orthodontics
Although maxillary skeletal palatal expansion was efficient to correct the transverse dental deficiency, the conventional maxillary palatal expansion is still effective in some cases. This case report describes the orthodontic treatment procedure of a 15-year-old female patient who was diagnosed as Angle’s Class I malocclusion with severe space deficiency. The space deficiency of 11 mm was noted in maxillary arch in conjunction with severe overjet, blocked-in lateral incisors, high maxillary vault, posterior crossbite and V shape arch-form. The treatment plan presented non-extraction with rapid maxillary alveolar expansion in upper arch. The Hyrax expander was used in a rhythm of 2 …