Development of a Measuring System for Sequential Occlusal Aspects

DOI 36 References
  • Otani Shuhei
    Graduate School of Dental Science, Kyushu University
  • Hayasaki Haruaki
    Pediatric Dental Clinic, Kyushu University Hospital
  • Iwase Yoko
    Section of Pediatric Dentistry, Division of Oral Health, Growth and Development, Faculty of Dental Science, Kyushu University
  • Nakata Shiho
    Section of Pediatric Dentistry, Division of Oral Health, Growth and Development, Faculty of Dental Science, Kyushu University
  • Nakata Minoru
    Kyushu University

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  • 乳歯列の経時的な咬合面形態計測システムの開発

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Abstract

In order to clarify the changes in sequential occlusal aspects in children, we developed a system of superimposing recorded three-dimensional measurement data of tooth surfaces by using the threedimensional contact digitizer with a touch sensor probe. The evaluation of the accuracy of this system using the standard block and first molars proved to be highly precise.<BR>By application of this system, quantification and visualization of dental wear on the primary right second molar were investigated on the serial dental casts taken at 6 years,8 months 9 years,4 months and 10 years,9 months of age from the same child.<BR>As a result, quantification of dental wear was 4.6 mm3 between 6 years,8 months and 9 years,4months of age,2.1 mm3 between 9 years,4 months and 10 years,9 months of age. A all of the cusps except for the hypocone demonstrated that the steep slope changed more horizontality in visualization of dental wear.<BR>In conclusion, it is a matter of great importance to clarify the relationship between occlusal aspects and the function of mandibular movement by a future development of this system.

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