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Articles 1 - 7 of 7
Full-Text Articles in Orthodontics and Orthodontology
Treatment Of Severe Class Ii Division 1 Malocclusion With Maxillary First Molar Missing — Case Report, Ju-Chi Ho, Chien-Cheng Chen, Yi-Horng Chen
Treatment Of Severe Class Ii Division 1 Malocclusion With Maxillary First Molar Missing — Case Report, Ju-Chi Ho, Chien-Cheng Chen, Yi-Horng Chen
Taiwanese Journal of Orthodontics
This case report describes a 22-year-old female with skeletal Class II and dental Class II division 1 malocclusion. The chief complaint is her protrusive upper front teeth. Clinical examination revealed a convex facial profile, retrognathic mandible, proclined upper and lower incisors with 11mm overjet, missing of upper left first molar, mild crowding in the lower anterior region and V-shaped arch forms. After orthodontic analysis and communication with the patient, the treatment plan was decided to orthodontic camouflage treatment by extracting the upper first premolars, moving upper second and third molars mesially at left side and maintaining upper second premolar to …
Long-Term Follow Up Of Two-Stage Treatment Of Skeletal Class Ii Malocclusion – Case Report, Hui-I Chen, Hsiang-Min Hsu, Wen-Hui Hsieh
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 …
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
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.
Correction Of Severe Class Ii Division 1 Malocclusion With Miniscrew Anchorage– A Case Report, Yuh-Jia Hsieh, Ellen Wen-Ching Ko, Yu-Fang Liao, Chiung-Shing Huang
Correction Of Severe Class Ii Division 1 Malocclusion With Miniscrew Anchorage– A Case Report, Yuh-Jia Hsieh, Ellen Wen-Ching Ko, Yu-Fang Liao, Chiung-Shing Huang
Taiwanese Journal of Orthodontics
A case report describes the camouflage treatment of an adult patient with skeletal Class II jaw base relationship and moderate crowding. A 28-year-old woman presented with chief complaints of protrusive lips and upper front teeth. The clinical examination showed a convex facial profile, retrognathic mandible, excessively proclined upper and lower incisors, large overbite and overjet and a Class II division 1 malocclusion. To correct the facial profile, lip protrusion, large overjet, space deficiency and approximately full Class II relationship, distal movement of the maxillary first molars using miniscrew anchorage along with extraction of the maxillary and mandibular first premolars was …
The Treatment Of Skeletal Class Ii Malocclusion By Using Activator In The Circumpubertal Growth Period, Jeih-Fu Chen, Hong-Po Chang
The Treatment Of Skeletal Class Ii Malocclusion By Using Activator In The Circumpubertal Growth Period, Jeih-Fu Chen, Hong-Po Chang
Taiwanese Journal of Orthodontics
The treatment timing is the most important factor in the correction of skeletal Class II malocclusion. The treatment effect in contribution of mandibular growth in the circumpubertal growth period is better than that in the pre-pubertal growth period in use of no matter what kind of orthodontic appliance. This report is a case of skeletal Class II malocclusion with mandibular deficiency. By using functional appliance (Activator) and fixed orthodontic appliance in the circumpubertal growth period, the malocclusion and retruded mandibular profile had been successfully improved.
From Class Ii To Class Iii: Unpredictable Growth On The Follow Up Of Two Cases Of Skeletal Malocclusion, Chia-Yi Pan, Ming-Jeaun Su
From Class Ii To Class Iii: Unpredictable Growth On The Follow Up Of Two Cases Of Skeletal Malocclusion, Chia-Yi Pan, Ming-Jeaun Su
Taiwanese Journal of Orthodontics
Predicting growth direction and growth potential is an important part of orthodontic treatment in growing patient. Unfortunately, variation between individuals makes growth prediction complicated and difficult. This article is to discuss two skeletal Class II cases had unexpected growth and transferred into skeletal Class III during growth. This unexpected growth also leading to unsatisfied outcomes and secondary treatment.
The Eighteen-Month Follow-Up Of Orthodontic Treatment Outcome With Bony Anchorage For A Severe Skeletal Class Ii Anterior Openbite Malocclusion - A Case Report, John Siu-Lung Tse, Cheng-Tsung Huang, Jenny Zwei-Chieng Chang, Eddie Hsiang-Hua Lai, Chung-Chen Jane Yao, Yi-Jane Chen
The Eighteen-Month Follow-Up Of Orthodontic Treatment Outcome With Bony Anchorage For A Severe Skeletal Class Ii Anterior Openbite Malocclusion - A Case Report, John Siu-Lung Tse, Cheng-Tsung Huang, Jenny Zwei-Chieng Chang, Eddie Hsiang-Hua Lai, Chung-Chen Jane Yao, Yi-Jane Chen
Taiwanese Journal of Orthodontics
The etiology of skeletal Class II malocclusion may include excessive growth of the maxilla, deficient growth of the mandible, or the combination of both. Oral habits such as mouth breathing, tongue thrusting, and thumb sucking can cause anterior open bite. Meanwhile, the vertical overgrowth of posterior dentoalveoalr process may be another contributory factor. The treatment options for skeletal Class II malocclusion with anterior open bite should be planned according to the discrepancy of the inter-jaw relationship. If the discrepancy is mild or moderate, non-surgical approach with conventional orthodontic treatment will suit this situation. However, orthodontic treatment combined with orthognathic surgery …