Journal Article

Use of the centroid method of occlusion for studying the vertical and horizontal relationship of the mandible and maxilla

Satoru Murata

in The European Journal of Orthodontics

Published on behalf of European Orthodontics Society

Volume 29, issue 6, pages 600-604
Published in print December 2007 | ISSN: 0141-5387
Published online September 2007 | e-ISSN: 1460-2210 | DOI: http://dx.doi.org/10.1093/ejo/cjm070
Use of the centroid method of occlusion for studying the vertical and horizontal relationship of the mandible and maxilla

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The aim of the present study was to verify whether the centroid method of occlusion for studying mandibular and maxillary growth enables accurate determination of vertical occlusal patterns (open and deep bite). Lateral cephalograms were obtained of Japanese adult females aged over 18 years of age with a Class II malocclusion (61 open bite and 47 deep bite), or a Class III type open bite (70 subjects) or deep bite (21 subjects) malocclusion. One-way analysis of variance followed by a Bonferroni's t-test was used to compare the results among these four groups.

The Δabc area, which comprised the palatal, Ar-Gn, and A-B planes, was shown to be significantly larger in the open bite than in the deep bite group for both Class II and Class III malocclusion types (P < 0.01). There was no difference in the Δabc area between the Class II and Class III open bite groups or between the Class II and Class III deep bite groups.

These findings suggest that the centroid method of occlusion is a versatile diagnostic technique that can accurately differentiate between vertical occlusal patterns of Class II and III types of malocclusion limited to Japanese adult females. The analytical method is also unaffected by gnathostatic differences according to Angle classification.

Journal Article.  3025 words.  Illustrated.

Subjects: Restorative Dentistry and Orthodontics

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