咬合器に付着した歯列模型における被計測点位置の簡便な測定方法

第1報前後的ならびに左右的位置の測定方法

抄録

A simple method for measuring antero-posterior and bucco-lingual positions of an arbitrary point on a dental model mounted on an articulator has been developed and tested.
1. A measuring plate has been devised on which a dental model can be placed in coordinate to the reference planes erected vertically on its anterior and right and left portions. Using the jig plate and Digimatic caliper (Mitsutoyo Co., Tokyo, Japan), antero-posterior and bucco-lingual positions of an arbitrary point (for examples, cusp tip, fossa, etc.) on a dental model can be measured.
2. Using the jig, three fixed points on the same dental model were measured by three testees. The average standard deviations in the test, was 0.23 mm in the measurement of antero-posterior positions and 0.19 mm in the measurement of bucco-lingual positions.
3. By using the measuring plate devised in this study as a jig, antero-posterior and bucco-lingual positions of an arbitrary point on a dental model can be measured simply with accuracy of 4-5 times of the past method.