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

  • Journal of the Korean academy of pediatric dentistry
  • Abbr : J Korean Acad Pediatr Dent
  • 2020, 47(1), pp.17-24
  • DOI : 10.5933/JKAPD.2020.47.1.17
  • Publisher : The Korean Academy Of Pediatric Dentistry
  • Research Area : Medicine and Pharmacy > Dentistry
  • Received : July 15, 2019
  • Accepted : September 5, 2019
  • Published : February 29, 2020

Kyunghwa Choi 1 Kim Mi Sun ORD ID 2 Lee Ko Eun 2 NAM OK HYUNG ORD ID 2 Lee Hyo-Seol ORD ID 2 Chul Choi Sung ORD ID 2 KIM, KWANG CHUL 2

1강동경희대학교병원 치과병원 소아치과
2경희대학교

Accredited

ABSTRACT

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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