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Original Research

Open Access

Expansion of the Mandibular Arch in Children during the Mixed Dentition Period - A Clinical Study

  • Kenshi Maki1,*,
  • Yasuhiro Sorada2
  • Toshihiro Ansai3
  • Takahiro Nishioka1
  • Raymond L Braham4
  • Tetsuro Konoo5

1Kyushu Dental College, Department of Pediatric Dentistry, 2-6-1 Manazuru, Kokurakita-ku, Kitakyushu 803-8580, Japan

2Sorada Pediatric Dental Clinic, Japan

3 Department of Preventive Dentistry, 2-6-1 Manazuru, Kokurakita-ku, Kitakyushu 803-8580, Japan

4 Department of Orthodontics, Kyushu Dental College, Kitakyushu,Japan

5 Division of Pediatric Dentistry .Department of Orofacial Sciences, University of California, San Francisco, USA

DOI: 10.17796/jcpd.30.4.n2n0068375784443 Vol.30,Issue 4,July 2006 pp.329-332

Published: 01 July 2006

*Corresponding Author(s): Kenshi Maki E-mail: k-maki@kyu-dent.ac.jp

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Abstract

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.


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Kenshi Maki,Yasuhiro Sorada,Toshihiro Ansai,Takahiro Nishioka,Raymond L Braham,Tetsuro Konoo. Expansion of the Mandibular Arch in Children during the Mixed Dentition Period - A Clinical Study. Journal of Clinical Pediatric Dentistry. 2006. 30(4);329-332.

URL:

https://www.jjocpd.com/articles/10.17796/jcpd.30.4.n2n0068375784443

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