Abstract—The possible ways to measure the gap between dental prosthesis element and human tooth are measured by contact of probe or image processing. However, the gap measuring instrument to detect the denture installation is still in development. Nowadays, in order to judge whether the gap of denture is too large or not, dentists use a needle to scrape on the surface of denture. This way is easily affected by the applied force and causes misjudgment. Therefore, this study aims to develop a device to detect the gap of dental, such the device is not found currently in industry.
Based on the requirement, this study applies image processing to develop an Outside-Mouth Measurement System (OMMS) for gap measurement of dental prosthesis element outside the mouth. The system functions use image filtering, image morphology, and edge detection to capture and calculate the contour for the gap measurement of dental. The developed measurement system could combine with the oral camera to improve its application. The results in this study are efficient to measure the gap of dental prosthesis elements.

Index Terms—Dental, tooth, image processing, measurement system. 1.

The authors are with Department of Power Mechanical Engineering, National Formosa University, Huwei, Yunlin, Taiwan (email: changsl@nfu.edu.tw).

Cite: Shinn-Liang Chang, Duy-Hoang Nguyen, Bing-Jiun Tsai, "An Outside-Mouth Measurement System for the Gap Detect of Dental Prosthesis Elements," International Journal of Bioscience, Biochemistry and Bioinformatics vol. 7, no. 2, pp. 125-132, 2017.