| Autor: |
Maki, Kenshi, Sorada, Yasuhiro, Ansai, Toshihiro, Nishioka, Takahiro, Braham, Raymond L., Konoo, Tetsuro |
| Předmět: |
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| Zdroj: |
Journal of Clinical Pediatric Dentistry; Summer2006, Vol. 30 Issue 4, p329-332, 4p, 5 Black and White Photographs, 3 Charts |
| Abstrakt: |
A review of the dental literature revealed relatively few studies on the expansion of the mandibular dental arch. The present study attempted expansion of the mandibular arch using a Bihelix appliance. The subjects were 16 children, exhibiting crowding, age ranges from 7 to 11 years. The mandible was expanded 2.0 mm every 3 months. Significant expansion, not only of the individual tooth inter-arch dimensions but also of the overall arch length, was obtained during the period of incisor tooth replacement. The mode of expansion was classified as follows: Type I, those, which showed no effect on the apical base; Type II, those which showed no consistency of the measurement lines. In this study, 6 of 16 cases were classified as type I and 10 cases as type II. Expansion was continued over a period of 1.5 to 3 years. We concluded that considerable lateral expansion of the mandibular arch is possible using the Bihelix appliance. It is suggested that this might contribute greatly to non-extraction orthodontic treatment. Further studies are recommended. [ABSTRACT FROM AUTHOR] |
| Databáze: |
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