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Original Research

Open Access

Longitudinal observation of basic mandibular movements: report of a case

  • H. Hayasaki1,*,
  • A. Okamoto2
  • S. Nakata1
  • Y.Yamasaki1
  • M. Nakata1

1Section of Pediatric Dentistry, Division of Oral Health, Growth and Development, Faculty of Dental Science, Kyushu University, Japan

2Kanomi Dental Clinic, Himeji City, Hyogo Prefecture, Japan

DOI: 10.17796/jcpd.27.4.c4079073ug20w68m Vol.27,Issue 4,October 2003 pp.333-338

Published: 01 October 2003

*Corresponding Author(s): H. Hayasaki E-mail: hayasaki@dent.kyushu-u.ac.jp

Abstract

Sound development of mandibular function during childhood is indispensable to establishing healthy function in adults. To examine this developmental process, longitudinal recordings of basic mandibular movements were done using an optoelectronic analysis. Mandibular movements were recorded on five separate occasions in one boy, from an age of six years and five months to 14 years and five months. The incisor pathways during protrusion and lateral excursion were initially shallow, with more anterior than inferior movement, but as he grew the amount of inferior movement and the amount of rotation both increased. Similarly, at his first recording there was very little hinge-like rotation during mouth closing, but rotation increased markedly after eruption of his permanent second molars. These findings suggest that mandibular movements change from being relatively simple with more translation in younger children to more complex movements with more rotation once the permanent dentition is established.

Cite and Share

H. Hayasaki,A. Okamoto,S. Nakata,Y.Yamasaki,M. Nakata. Longitudinal observation of basic mandibular movements: report of a case. Journal of Clinical Pediatric Dentistry. 2003. 27(4);333-338.

References

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