scholarly journals Comparative Study of Tweed Triangle in Angle Class II Division 1 Malocclusion between Nepalese and Chinese Students

2015 ◽  
Vol 1 (1) ◽  
pp. 8-12
Author(s):  
Bishnu Prasad Sharma ◽  
Chang Xin ◽  
Jagan Nath Sharma
Keyword(s):  
Chinese Students ◽  
Class Ii ◽  
Plane Angle ◽  
Angle Class Ii ◽  
Angle Class ◽  
Division 1 ◽  
Skeletal Pattern ◽  
Chinese Subjects ◽  
Lower Incisors ◽  
Class Ii Division 1

Introductions: The establishment of specific cephalometric norms for specific race or ethnic group has been documented in literatures. The aim of the present study was to compare the Tweed triangle for Nepalese and Chinese subjects with Angle Class II division 1 malocclusion. Methods: The cephalometric radiographs of 52 Nepalese and 52 Chinese students age between 14 to 18 years, Class II division 1 malocclusion with Point A-Nasion-Point B angle larger than 4 degrees were analyzed for 9 parameters. Results: Mean age of Nepalese participants was 14.28 years and that of Chinese 14.09. The comparative variables of Nepalese and Chinese population were: Y axis (61.39 and 67.52), Sella Nasion Point A angle (83.69 and 81.14), Sella Nasion Point B angle (76.87 and 74.62), Occlusal plane angle (19.0 and 23.12), Frankfort Mandibular plane angle (28.13 and 32.87) and Lower Incisior to Frankfort Horizontal plane Angle (54.77 and 48.23). Conclusions: The Class II skeletal pattern, well positioned maxillas and retrusive mandibles were present in both samples. The Chinese showed more protruded maxilla, more buccal inclination of lower incisors and longer face than Nepalese. Plain Language Summary: The study was done to identify the Tweed triangle for a sample of Nepalese and Chinese subjects with Angle Class II division 1 malocclusion . The study found that the both samples showed Class II skeletal pattern, well positioned maxillas and retrusive mandibles but the Chinese had more protruded maxilla, more buccal inclination of lower incisors and longer face than Nepalese. It showed the importance of ethnic role as Nepalese have distinct cephalometric features, which should be used as a reference while treating the Nepalese orthodontic patients. DOI: http://dx.doi.org/10.3126/jpahs.v1i1.13008 Journal of Patan Academy of Health Sciences. 2014 Jun;1(1):8-12

scholarly journals Comparative Cephalometric Analysis of Angle Class II Division 1 Malocclusion between Chinese Male and Female Subjects

2014 ◽  
Vol 4 (2) ◽  
pp. 21-23
Author(s):  
Bishnu Prasad Sharma ◽  
Chang Xin
Keyword(s):  
Class Ii ◽  
Cephalometric Analysis ◽  
Male And Female ◽  
Angle Class Ii ◽  
Angle Class ◽  
Division 1 ◽  
Craniofacial Features ◽  
Chinese Male ◽  
Chinese Subjects ◽  
Class Ii Division 1

Objective: To compare the craniofacial features of male and female Chinese samples with Angle Class II Division 1 malocclusion.Materials & Method: The cephalometric radiographs were obtained from 39 Chinese subjects (mean age17.18 ± 7.1 years) with Angle Class II Division 1 malocclusion. Ten skeletal, nine dental and three soft tissue variables were investigated.Result: The craniofacial features between Chinese genders showed statistical significant differences among only one of the twenty-two variables studied.Conclusion: Chinese males have anteriorly long face compare to females.

scholarly journals Comparative Cephalometric Analysis of Angle Class II Division 1 Malocclusion Between Nepalese and Chinese Subjects

2014 ◽  
Vol 4 (1) ◽  
pp. 17-21 ◽  
Author(s):  
Bishnu Prasad Sharma ◽  
Chang Xin
Keyword(s):  
Class Ii ◽  
Cephalometric Analysis ◽  
Angle Class Ii ◽  
Angle Class ◽  
Division 1 ◽  
Craniofacial Features ◽  
Gender Groups ◽  
Chinese Subjects ◽  
Class Ii Division 1

Objective: To identify the craniofacial features of Nepalese and Chinese subjects with Angle Class II division 1 malocclusion; andto compare between Nepalese and Chinese samples and Nepalese gender groups.Materials & Method: The cephalometric radiographs were obtained from 96 Nepalese (mean ages16.34 ± 5.4 years) and 39Chinese (mean age 17.18 ± 7.1 years) subjects with Angle Cass II division 1 malocclusion. Ten skeletal, nine dental and three softtissue variables were investigated.Result: The craniofacial features between Nepalese and Chinese samples showed significant differences among fifteen of thetwenty-two variables studied; whereas in comparison between gender groups, six parameters were significantly different.Conclusion: Both samples showed well positioned maxilla, retrusive mandible and Class II skeletal tendency. In comparison,maxilla was more protrusive, mandible was more retrusive and overjet was more increased in Chinese. The Nepalese showedmore prominent nose and chin.DOI: http://dx.doi.org/10.3126/ojn.v4i1.11306 Orthodontic Journal of Nepal Vol.4(1) 2014; 17- 

scholarly journals Agenesis of maxillary lateral incisor in an Angle Class II, Division 1 malocclusion patient

2015 ◽  
Vol 20 (5) ◽  
pp. 108-117
Author(s):  
Guilherme Thiesen
Keyword(s):  
Class Ii ◽  
Lateral Incisor ◽  
Occlusal Plane ◽  
Angle Class Ii ◽  
Anterior Teeth ◽  
Angle Class ◽  
Division 1 ◽  
Maxillary Lateral Incisor ◽  
Dentofacial Orthopedics ◽  
Class Ii Division 1

The present case report describes the orthodontic treatment of a patient with agenesis of maxillary left lateral incisor and Angle Class II, Division 1 malocclusion. The patient also presented with maxillary midline deviation and inclination of the occlusal plane in the anterior region. Treatment objectives were: correction of sagittal relationship between the maxilla and the mandible; correction of midline deviation, so as to cause maxillary and mandibular midlines to coincide; correction of overbite and leveling of the occlusal plane, so as to create ideal conditions for esthetic rehabilitation of anterior teeth. This case was presented to the Brazilian Board of Orthodontics and Dentofacial Orthopedics (BBO) as a requirement for the title of certified by the BBO.

The outcome of a two-phase treatment in a patient with Angle Class II, Division 1 malocclusion and an excessive overjet

2009 ◽  
Vol 68 (2) ◽  
pp. 88-94
Author(s):  
Yoko Takigawa ◽  
Yuji Sanma ◽  
Setsuko Uematsu ◽  
Kenji Takada
Keyword(s):  
Class Ii ◽  
Two Phase ◽  
Angle Class Ii ◽  
Angle Class ◽  
Division 1 ◽  
Class Ii Division 1

scholarly journals Perawatan Ortodontik Alat Lepasan Kombinasi Semi-Cekat pada Kehilangan Gigi 46

2016 ◽  
Vol 1 (1) ◽  
pp. 20
Author(s):  
Maharetta Ditaprilia ◽  
Wayan Ardhana ◽  
Christnawati Christnawati
Keyword(s):  
Class Ii ◽  
Orthodontic Appliances ◽  
Angle Class Ii ◽  
Anterior Teeth ◽  
Angle Class ◽  
Fixed Orthodontic Appliances ◽  
Division 1 ◽  
Removable Appliances ◽  
Lower Arch ◽  
Class Ii Division 1

Salah satu pertimbangan dalam menentukan alat ortodontik yang akan digunakan adalah biaya. Alat ortodontik lepasan dipilih karena memerlukan biaya yang lebih rendah dibanding dengan alat ortodontik cekat. Perawatan ortodontik dengan alat lepasan sulit dilakukan jika disertai dengan pencabutan satu atau beberapa gigi posterior. Pasien perempuan usia 23 tahun, mengeluhkan gigi rahang atas maju dan gigi rahang bawah berjejal. Pemeriksaan objektif menunjukkan protrusif rahang atas, crowding rahang bawah, palatal bite, disertai kehilangan gigi 46. Maloklusi Angle Kelas II divisi 1 tipe dentoskeletal, hubungan skeletal klas II, protrusif bimaksilar, bidental protrusif, overjet 7,2 mm, crowding, palatal bite, dan kebiasaan bernafas melalui mulut. Perawatan menggunakan kombinasi alat semi-cekat pada rahang bawah dan alat lepasan pada rahang atas. Alat semi-cekat digunakan untuk space clossing bekas pencabutan gigi 46. Terjadi space closing bekas pencabutan gigi 46 setelah 6 bulan perawatan. Overjet berkurang menjadi 4 mm dan overbite 2,7 mm setelah 1 tahun perawatan. Kombinasi alat semi-cekat pada rahang bawah dan alat ortodontik lepasan pada rahang atas efektif untuk koreksi maloklusi Angle Klas II divisi 1 dengan kehilangan gigi 46 pada pasien ini. ABSTRACT: Orthodontic Treatment Using Semi-Fixed Appliances with Partial Edentulous 46. Cost is one of the considerations in determining the use of orthodontic appliances. Removable orthodontic appliance is chosen because it is less costly than fixed orthodontic appliances. It is difficult to use removable orthodontic appliances to treat a missing one or more posterior teeth case. A 23 year old female patient had a chief complaint of crowding in lower anterior teeth and forwardly placed upper anterior teeth. Her objective examination shows protrution of upper teeth, crowding in the lower arch, palatal bite, and partial edentulous of 46 tooth. It was Angle Class II division 1 dentoskeletal malocclusion, skeletal class II, bimaxillary protrusion, bidental protrusion, overjet 7,2 mm, crowding, palatal bite, and mouth-breathing habit. The treatment used a combination of semi-fixed orthodontic appliances in the lower arch and removable appliances in the upper arch. The semi-fixed orthodontic appliances were used on space closing of partial edentulous 46. The partial edentulous 46 was closed after 6 months of treatment. The overjet was reduced to 4 mm and overbite 2,7 mm after one year of treatment. The combination of semi-fixed orthodontic appliances in the lower arch and removable appliances in the upper arch generate a good result to correct Angle Class II division 1 malocclusion with partial edentulous 46.

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