Measurement of Facial Configurations by 3D Optical Scanning System Incorporating Cephalostat-Studies on the Accuracy and Stability of Software Function Rectifying a Craniofacial Position-:Studies on the Accuracy and Stability of Software Function Rectifyi

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There are many methods of measuring facial configurations, and in recent years, reports and clinical studies on three-dimensional analysis have increased. Especially, the 3D optical scanning system offers not only rapid high-precision measurement but also no radiation exposure. We have newly developed a non-contact 3D optical scanning system (SURFLACER VMH-300F) which is equipped with cephalostats, and investigated the reliability, accuracy and stability of locating specific landmarks on facial soft tissue. We measured and analyzed the facial configurations of 10 adult Japanese, 5 times per subject, using this system and reverse engineering software (Imageware 9). The results were as follows. 1. The operation of rectifying a position could be reduce the error to 0.63±0.15mm. 2.High-precision Measurement could be performed by using cephalostats, without rectifying a position. However, rectifying increased the accuracy. 3. The meanerrorof the measurement datum point was 2.68±0.89mm, the datum point of the foreheadarea had high reproducibility, and the datum point of the angle of mouth and angle of mandible had low reproducibility.
特定非営利活動法人日本顎変形症学会の論文