Extraction Or Non Extraction Treatment Of Class Ii Division Ii Malocclusion Adult Patients – Cases Report,
2022
Zuoying Branch of Kaohsiung Armed Forces General Hospital; Department of Orthodontics, Chi Mei Medical Center
Extraction Or Non Extraction Treatment Of Class Ii Division Ii Malocclusion Adult Patients – Cases Report, Chen-Han Tsou, Chun-Liang Kuo, Yi-Hua Liu, Yuan-Yi Wang
Taiwanese Journal of Orthodontics
The cases of Angle Class II Division 2 malocclusion are rare in the population. These cases are characterized by retroclined upper anteriors and deep overbite. Facial profile have relatively retrusive lips as well as prominent chins. Extraction of premolars followed by incisor and lip retraction will further retrude the lips. So decided the extraction treatment plan of these patient requires careful diagnosis. In this case report, we will discuss the considerations of extraction or non-extraction treatment of Class II division 2 malocclusion.
Non-Extraction Orthodontic Treatment Of Bilateral Maxillary Canine Impaction – A Case Report,
2022
Department of Dentistry, Chung Shan Medical University Hospital, Taiwan
Non-Extraction Orthodontic Treatment Of Bilateral Maxillary Canine Impaction – A Case Report, Pei-Chen Wu, Tzu-Hsin Lee
Taiwanese Journal of Orthodontics
The ectopic eruption and impaction of maxillary permanent canines is a frequently encountered clinical problem.The diagnosis and treatment of this problem usually requires the expertise of orthodontist.In this case report,we present the treatment of a 14-year-old male patient with delaying eruption of bilateral upper permanent canine.The patient received full mouth non-extraction orthodontic treatment with surgical exposure of upper permanent canine.The patient was satisfied with the treatment outcome.
Treatment Of Early Implanted Upper Anterior Teeth By Modified Distraction Osteogenesis And Orthodontic Treatment,
2022
Division of Orthodontics, Department of Dentistry, Chang Gung Memorial Hospital, Linkou, Taiwan; Division of Oral Surgery, Department of Dentistry, Chang Gung Memorial Hospital, Linkou, Taiwan
Treatment Of Early Implanted Upper Anterior Teeth By Modified Distraction Osteogenesis And Orthodontic Treatment, Wei-Min Yang, Ya-Yi Chen, Yu-Liang Chang, Huey-Ling Chen
Taiwanese Journal of Orthodontics
The replacement of teeth by osseointegrated implants is usually restricted to patients with completed craniofacial growth. Implant insertions in children, adolescents and young adults who we refer to as young patients are circumvented due to several unfavorable potential effects including trauma to tooth germs, tooth eruption disorders, and multidimensional restrictions of dental alveolus and skeletal craniofacial growth. The clinical and radiographic findings have clearly shown that the implants do not behave like normal erupting teeth during the development of the dentition. Neither does the fixtures move together with the adjacent teeth, but behaves more like ankylosed teeth. This was a …
Orthodontic Treatment With Maxillary Canine Substitution For Lateral Incisor – A Case Report,
2022
Dentistry Department, Taipei Veterans General Hospital, Taipei, Taiwan; School of Dentistry, National Yang-Ming University, Taipei, Taiwan
Orthodontic Treatment With Maxillary Canine Substitution For Lateral Incisor – A Case Report, Pei-Chun Twu, Chia-Chen Li, Shen-Chieh Lin, Hwai-Jen Fong, Tzu-Ying Wu
Taiwanese Journal of Orthodontics
Patients with peg lateral incisors combined space discrepancy can be treated by either replacing or restoring the lateral incisor after space redistribution, or by removing peg lateral incisor and positioning the canine to simulate the lateral incisor. This case report describes the treatment of a 14-year-old female. Her chief complaint is upper left side canine impaction. It is also found she has bilateral peg-shaped maxillary lateral incisors. Treatment involved extraction of two maxillary lateral incisors and two mandibular second premolars. Maxillary canines and first premolars substituted for lateral incisors and canines. After 26 months of treatment, the esthetic was improved …
The Effects Of Beverage On Orthodontic Wires – Research Report,
2022
Department of Dentistry, Chung-Shan Medical University Hospital, Tai-Chung, Taiwan
The Effects Of Beverage On Orthodontic Wires – Research Report, Yun-Shan Lee, Po-Yu Yang, Tzu-Hsin Lee
Taiwanese Journal of Orthodontics
Orthodontic patients who love acidic soft drinks will increase the opportunity of enamel erosion, corrosion of orthodontic appliance, discoloration of resin and bonding agent, dental caries, obesity, decrease of orthodontic brackets bonding strength and so no. However, whether these acidic soft drinks would affect orthodontic wires were seldom discussed. The purpose of this study was to investigate the effect of acidic soft drinks on orthodontic wires. The orthodontic wires are divided into 3 groups: 0.016-inch stainless steel round wire, 0.016-inch NiTi round wire, and 0.016-inch TMA round wire. And each wire group subdivided by four subgroups: Coca-Cola, Sprite, black tea, …
Comparison Of The Initial Nasolabial Changes By 2 Different Alar Base Cinch Suture Techniques In Class Iii Patients Who Received Two-Jaw Orthognathic Surgery,
2022
Department of Craniofacial Orthodontics, Chang Gung Memorial Hospital, Taipei, Taiwan; Craniofacial Research Center, Chang Gung Memorial Hospital, Linkou, Taiwan; Graduate Institute of Craniofacial and Oral Science, Chang Gung University, Taoyuan, Taiwan
Comparison Of The Initial Nasolabial Changes By 2 Different Alar Base Cinch Suture Techniques In Class Iii Patients Who Received Two-Jaw Orthognathic Surgery, Yi-Hsuan Chen, Cheng-Hui Lin, Ellen Wen-Ching Ko
Taiwanese Journal of Orthodontics
This study compared the effectiveness of the conventional and a new modified alar base cinch technique on changes in the nasolabial morphology after bimaxillary orthognathic surgery. Materials and methods: The prospective, blinded, randomized controlled study recruited 32 Taiwanese skeletal Class III patients (aged 18- 37 years). All of the patients had received bimaxillary orthognathic surgery to correct skeletal discrepancies.During the intraoral wound-closing procedure, patients were equally separated into 2 groups. A conventional group (C, 16 patients) received the conventional alar base cinch technique; a modified group (M, 16 patients) received the modified alar base cinch technique. The nasolabial region was …
Nonsurgical Maxillary Expansion In Adults – Literature Review,
2022
Orthodontic Division, Department of Dentistry, Cathay General Hospital, Taipei, Taiwan
Nonsurgical Maxillary Expansion In Adults – Literature Review, Jui-Hsien Yang, Yun-Yun Wu
Taiwanese Journal of Orthodontics
Early treatment with maxillary expansion has been recommended for child with transverse discrepancies, particularly unilateral crossbite, because it has been developed to skeletal asymmetries. It also routinely expanded early to relieve crowding, due to the middle palatine suture of maxilla can be open in the child and adolescence periods.As age increase, the middle palatine suture becomes more interdigitated, surgically assisted rapid maxillary expansion is necessary in adult. This article reviews treatment consideration, methods, appliances, mechanism, stability of nonsurgical maxillary expansion and how used in adult patient. We also present a clinical case to confirm quad helix appliance can treat maxillary …
Long-Term Follow Up Of Two-Stage Treatment Of Skeletal Class Ii Malocclusion – Case Report,
2022
Department of Orthodontics, Chang Hua Christian Hospital
Long-Term Follow Up Of Two-Stage Treatment Of Skeletal Class Ii Malocclusion – Case Report, Hui-I Chen, Hsiang-Min Hsu, Wen-Hui Hsieh
Taiwanese Journal of Orthodontics
The common treatment protocol for skeletal Class II malocclusion during mixed dentition is a two-stage treatment, namely functional appliance followed by fixed appliance. The goal of the functional appliance is to enhance the horizontal growth of mandible. After reevaluation, the second stage of fixed appliance is implemented. This is a 2-case report of skeletal Class II malocclusion. Both clinical examinations showed mandible retrognathia, large overjets and full Class II Angle’s molar relationships. Two-stage treatments were undertaken. After functional appliances, overjets were reduced and Class I molar relationships were achieved. Following that, fixed appliances were carried out without extraction of teeth …
Root Coverage With Laterally Positioned Pedicle Flap And Subepithelial Connective Tissue Graft On Localized Severely Denuded Root Surface After Surgical Orthodontic Treatment In Cleft Lip And Palate: A Case Report,
2022
Department of Periodontics, Chang Gung Memorial Hospital, Taipei, Taiwan
Root Coverage With Laterally Positioned Pedicle Flap And Subepithelial Connective Tissue Graft On Localized Severely Denuded Root Surface After Surgical Orthodontic Treatment In Cleft Lip And Palate: A Case Report, Yuan-Min Wang, Yuh-Ren Ju, Ellen Wen-Ching Ko, Whei-Lin Pan, Chiu-Po Chan, Shiuan-Tang Jasmine Chang
Taiwanese Journal of Orthodontics
A 27-year-old female patient with secondary cleft deformity and malocclusion was initially treated with reconstructive surgery. However, localized severely gingival recession on the upper right first premolar and massive scar tissue over the buccal vestibular area were formed after the surgical orthodontic treatment. The surgical technique of choice in this patient was laterally positioned pedicle flap (LPF) combined with subepithelial connective tissue graft (SCTG) because of the area adjacent to the recession defect showed a great amount of attached gingiva and without interproximal bone loss. The complete root coverage in the surgical site was observed one year later. To the …
To Achieve An Ideal Functional Occlusion And Esthetical Outcome By Interdisciplinary Treatment – A Case Report,
2022
Department of General Dentistry, Chang Gung Memorial Hospital, Taoyuan, Taiwan
To Achieve An Ideal Functional Occlusion And Esthetical Outcome By Interdisciplinary Treatment – A Case Report, Nien-Chieh Lee, Pi-Lun Chen, Chien-Jung Pai, Whei-Lin Pan
Taiwanese Journal of Orthodontics
A harmonious face may involve the proper skeletal and dental relationship, in combination with the color, contour, and position of surrounding soft tissue. A 51-year-old female patient complained about her protrusive teeth and asked for improvement of her facial profile. The clinical examination of the patient revealed bimaxillary protrusion, gummy smile, and several ill-fitted fixed partial dentures. The “surgery-first” approach was chosen to improve her facial esthetics and to achieve a normal occlusion by reducing orthodontic treatment time. Therewas still 2~3mm space remaining between upper left canine and second premolar after orthodontic treatment, and this problem was resolved by prosthetic …
Profile Angle Defines Soft Tissue Chin Position In Adults,
2022
Department of Orthodontics and Craniofacial Dentistry, Chang Gung Memorial Hospital, Linkou, Taiwan; College of Medicine, Chang Gung University, Taoyuan, Taiwan
Profile Angle Defines Soft Tissue Chin Position In Adults, Hui-Ling Chen, Yueh-Tse Lee, Yu-Ching Wang
Taiwanese Journal of Orthodontics
Objectives: To identify the soft tissue chin position relative to the upper part of the face wherein the Frankfort horizontal (FH) plane intersects the nasal bridge and to define a specific measurement that might benefit different racial groups and their treatment goals. Materials and Methods: Forty-eight Taiwanese adults (23 males and 25 females), selected based on criteria consisting of proper occlusion, skeletal Class I pattern, lip competence in repose, and within the Esthetic (E) line confined standard, were subjected to standard soft tissue facial analyses. The results were used to compare with those of the White norm. Results: Analyses revealed …
Dentofacial Morphology Of Skeletal Class Ii Malocclusion With Mandibular Retrusion,
2022
Department of Orthodontics, Kaohsiung Medical University Hospital; Division of Medical Statistics and Bioinformatics, Department of Medical Research, Kaohsiung Medical University Hospital
Dentofacial Morphology Of Skeletal Class Ii Malocclusion With Mandibular Retrusion, Yu-Chun Lin, Hong-Po Chang, Yi-Hsin Yang, Yu-Chuan Tseng, Chin-Yun Pan, Szu-Ting Chou
Taiwanese Journal of Orthodontics
Objective: The aim of this study was to investigate the morphological characteristics of the craniofacial pattern in skeletal Class II adults with mandibular retrusion. Materials and methods: Lateral cephalograms of 80 adults with skeletal Class II malocclusion with mandibular retrusion (∠ANB > 5°, ∠FNB < 86°) compared with 80 adults with normal occlusion (equal sexes in both groups). Thirty five landmarks were identified and digitized. Cephalometric analysis utilizing 30 linear, 29 angular and 4 ratio measurements were undertaken. Statistical comparison of the two groups was performed with Student’s t-test and 2 way-ANOVA. Results: (1) The skeletal Class II sample with mandibular retrusion had longer anterior cranial base length but the internal cranial base angle and the saddle angle were not different from the normal occlusion subject. (2) The sample with mandibular retrusion had longer maxillary length but the maxilla was in normal position related to the cranial base. The mandible was more retrusive and smaller but the ramus width was wider than normal occlusion subject due to compensatory growth. (3) The mandibular retrusion sample had more tilting maxillary plane, mandibular plane, ramus plane and occlusal plane. The sample had longer total anterior facial height, longer upper and lower anterior facial height and shorter posterior facial height (shorter ramus height) than normal occlusion subjects. Hyperdivergent facial pattern and the mandible rotated clockwisely were noted. (4) The mandibular retrusion sample had extrusive but normal inclined upper incisors, more inclined and extrusive lower incisors, smaller interincisal angle, larger overjet and deep overbite. (5) The mandibular retrusion group had more mesial tipping and more extrusive upper 1st molars. Besides, more mesial tipping, more retrusive, and more extrusive lower 1st molars were noted. Conclusion: Multiple variations of skeletodental features were found for skeletal Class II malocclusion with mandibular retrusion.
Treatment Of Angle Class Iii Malocclusion With Lateral Incisor Congenital Missing With Facemask – Case Report,
2022
Department of Orthodontics of Veterans General Hospital, Taichung
Treatment Of Angle Class Iii Malocclusion With Lateral Incisor Congenital Missing With Facemask – Case Report, Hsin-Yi Lo, Kwong-Wa Li, Lian-Ru Chen, Ming-Lun Hong, Jeng-Fen Liu
Taiwanese Journal of Orthodontics
Protraction facemask is one of the common effective methods to treat the patient with maxillary deficiency in mixed dentition and adolescent patients. In this case report, we present the treatment of a 10-year-old female patient with skeletal class III with maxillary retrognathism, anterior crossbite, left lateral incisor congenital missing, right peg lateral incisor and midline discrepancy with class III malocclusion. Treatment plan included protraction facemask with rapid maxillary expansion therapy, extraction of right peg lateral incisor and canine substitution. We also used temporary anchorage device (TAD) for molar asymmetry and midline correction while using facemask protraction to reach the bilateral …
Orthodontic Treatment For A Class Iii Malocclusion Growing Patient By Using Rme And Chin-Cup Appliance – Case Report,
2022
Graduate Institute of Dentistry, College of Oral Medicine, Taipei Medical University; Department of Orthodontics, Wan Fang Hospital, Taipei, Taiwan
Orthodontic Treatment For A Class Iii Malocclusion Growing Patient By Using Rme And Chin-Cup Appliance – Case Report, Po-Yuan Hsueh, Li-Hsiang Lin
Taiwanese Journal of Orthodontics
The early treatment of skeletal Class III malocclusion is one of the most challenging problems that orthodontists may encounter. These patients often combine maxillary deficiency with anterior crossbite. In this report, an 8-year-old female patient with Class III malocclusion, anterior crossbite and protrusive lower lip. (SNA: 83.5°, SNB: 83°, ANB: 0.5°, overjet: -1.5mm, overbite: +2.5mm, mandibular plane to SN: 26.7°), received orthodontic treatment with rapid maxillary expansion and chin cup appliance. We used RME 2 turns (0.5mm) per day, and wore the chin cup at least 21 hours per day, to force mouth closure and enhance nasal breathing. Active orthodontic …
Management Of Occlusal Plane Canting By Yin-Yan Archwire – A Case Report,
2022
Department of Orthodontics, Kaohsiung Medical University Hospital
Management Of Occlusal Plane Canting By Yin-Yan Archwire – A Case Report, Chia-Ni Lin, Szu-Ting Chou
Taiwanese Journal of Orthodontics
It is important to diagnose the underlying cause of an occlusal plane canting so that an appropriate treatment plan can be efficiently implemented. Burstone1said the patient treated surgically should have the occlusal plane parallel to facial structure. In nonsurgical patient, there may be a cant to the plane of occlusion relative to the face. In the past, this cant was not easily treated because of mechanical difficulties in intruding entire posterior segments. With skeletal anchorage device, we can solve the problem today, but can we do it in a different way? This case report presents a young male suffered from …
A Case Report Of Non-Extraction Treatment For Maxillary Canine Transposition,
2022
Dentistry Department, Taipei Veterans General Hospital
A Case Report Of Non-Extraction Treatment For Maxillary Canine Transposition, Ting-Fang Cheng, Shou-Hsin Kuang, Jenny Hwai-Jen Fong, Tzu-Ying Wu
Taiwanese Journal of Orthodontics
Tooth transposition is a rare but disturbing problem for patients in esthetic and functional aspects. In this report, we describe a case with unilateral transposition of the maxillary canine and premolar. The patient received full mouth non-extraction orthodontic treatment with upper 1st premolar substitution for upper canine. Crown morphology modification and gingival plastic surgery for harmonious anterior esthetics and function were performed. Patient was satisfied with the treatment outcome.
Bite Force And Maximum Mouth Opening After Orthognathic Surgery,
2022
Orthodontic Department, National Taiwan University Hospital, Taipei, Taiwan
Bite Force And Maximum Mouth Opening After Orthognathic Surgery, Hsiang-Ling Hu, Sheng-Chin Lin, Yun-Yun Wu, Yuan-Yi Tun, Man-Ching Cheng, Chung-Chen Jane Yao, Wen-Chung Chang
Taiwanese Journal of Orthodontics
In order to achieve better facial esthetics, functional occlusion, maintaining tissue health and stable treatment results, orthognathic surgery is required in certain orthodontic patients. While planning orthognathic surgery, we should inform patients benefits and risks associated in this treatment modality. Possible side effects including the post-operational temporary physiological influences to the patient should be mentioned.Thus, patients will be less anxious and deal with those problems more comfortably. The most common post-operation influences of orthognathic surgery is hypomobility. The objective measurements for mandibular function are maximum mouth opening (MMO), maximum bite force, and muscle fatigability. We summarize and compare the literatures …
A Paradigm Shift In Lingual Orthodontics – Literature Review,
2022
Sijhih Cathay General Hospital, New Taipei City, Taiwan
A Paradigm Shift In Lingual Orthodontics – Literature Review, Yu-Ching Huang, Li-Hsiang Lin
Taiwanese Journal of Orthodontics
During the past decades, environments surrounding orthodontics have dramatically been changed. Demands for esthetics from patients are becoming more and more, and the number of patients who want to have invisible treatment has been increasing, especially in Europe and Asian countries. The lingual orthodontic therapy though started in 1972, could not be popular until the beginning of 1990. So far, the biggest changes in technical aspects of lingual orthodontics include development of patient and orthodontist friendly lingual treatment system with new appliances and digital technology for computerized treatment plan modeling and wire bending. Lingual orthodontics is no longer difficult nor …
Surgical Orthodontic Treatment For A Class Iii Patient With Anterior Openbite And Multiple Idiopathic Root Resorption – A Case Report,
2022
Orthodontic Division, Department of Dentistry, National Taiwan University Hospital; Graduate Institute of Clinical Dentistry, School of Dentistry, College of Medicine, National Taiwan University
Surgical Orthodontic Treatment For A Class Iii Patient With Anterior Openbite And Multiple Idiopathic Root Resorption – A Case Report, Shao-Chun Lu, Shu-Yin Chao, Yao-Der Huang, Sang-Heng Kok, Yi-Jane Chen
Taiwanese Journal of Orthodontics
Severe root resorption with excessive tooth mobility may compromise the capability of the teeth to sustain occlusal loading, and possibly lead to extraction. Apical external root resorption (AERR) is considered as one of the risks associated with orthodontic treatment. Some clinical factors have been shown to correlate with orthodontic treatment, whereas the determinants for predicting AERR consistently were not found. Therefore, orthodontists must monitor the amount of root resorption during the course of orthodontic treatment. Multiple idiopathic root resorption (MIRR) is a rare condition. If MIRR is present, the severity of tooth mobility may get worsen during orthodontic treatment. The …
Maxillary Molar Distalization With Introral Fixed Appliances And Miniscrew Anchorage — Case Report,
2022
Orthodontic Department, Taipei Veterans General Hospital; Zuoying Branch of Kaohsiung Armed Forces General Hospital
Maxillary Molar Distalization With Introral Fixed Appliances And Miniscrew Anchorage — Case Report, Tung-Yu Li, Fang-Chin Chen, Hwai-Jen Fong, Tzu-Ying Wu, Sou-Hsin Kuang
Taiwanese Journal of Orthodontics
Fixed maxillary molar distalization appliance is an effective and noncompliance way for space regain. But with the increased confidence on skeletal anchorage, maximum anchorage preparation was planned with miniscrew in recent years. In this article, we cited two clinical cases to introduce an intraoral noncompliance appliance for maxillary molar distalization. RAMDA (rapid molar distalizing appliance) assist with skeletal anchorage is our modified technique used in these cases. From superimposition, we found that average rate of distalization was 1-2 mm per month. However, distal tipping of molar and anterior anchorage loss were also noted when using miniscrew as indirect anchorage.
