Accuracy and Precision of Three-dimensional Imaging System of Children’s Facial Soft Tissue

Kyunghwa Choi; Kim Mi Sun; Lee KoEun; NAM OK HYUNG; Lee Hyo-Seol; Chul Choi Sung; KIM， KWANG CHUL

doi:10.5933/JKAPD.2020.47.1.17

The purpose of this study was to evaluate the accuracy and precision of the three-dimensional (3D) imaging system of children’s facial soft tissue by comparing linear measurements. The subjects of the study were 15 children between the ages of 7 and 12. Twenty-three landmarks were pointed on the face of each subject and 16 linear measurements were directly obtained 2 times using an electronic caliper. Two sets of 3D facial images were made by the 3D scanner. The same 16 measurements were obtained on each 3D image. In the accuracy test, the total average difference was 0.9 mm. The precision of 3D photogrammetry was almost equivalent to that of direct measurement. Thus, 3D photogrammetry by the 3D scanner in children had sufficient accuracy and precision to be used in clinical setting. However, the 3D imaging system requires the subject’s compliance for exact images. If the clinicians provide specific instructions to children while obtaining 3D images, the 3D device is useful for investigating children’s facial growth and development. Also the device can be a valuable tool for evaluating the results of orthodontic and orthopedic treatments.

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* 2021년 이후 발행 논문의 참고문헌은 현재 구축 중입니다.

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