Korean J Oral Maxillofac Radiol.  2006 Jun;36(2):89-94.

Clinical usefulness of facial soft tissues thickness measurement using 3D computed tomographic images

Affiliations
  • 1Department of Oral & Maxillofacial Radiology, Oral Science Research Center, College of Dentistry, Yonsei University, Korea. kdkim@yumc.yonsei.ac.kr
  • 2Division in Anatomy & Developmental Biology, Department of Oral Biology, Oral Science Research Center, Brain Korea 21 Project for Medical Science, College of Dentistry, Yonsei University, Korea.
  • 3Department of Periodontology, Research Institute for Periodontal Regeneration, College of Dentistry, Yonsei University, Korea.
  • 4Department of Anatomy and Catholic Institute for Applied Anatomy, College of Medicine, Catholic University of Korea, Korea.
  • 5Human Identification Research Center, Yonsei University, Korea.
  • 6Maxtron Inc., Korea.

Abstract

PURPOSE: To evaluate clinical usefulness of facial soft tissue thickness measurement using 3D computed tomographic images.
MATERIALS AND METHODS
One cadaver that had sound facial soft tissues was chosen for the study. The cadaver was scanned with a Helical CT under following scanning protocols about slice thickness and table speed; 3 mm and 3 mm/sec, 5 mm and 5 mm/sec, 7 mm and 7 mm/sec. The acquired data were reconstructed 1.5, 2.5, 3.5 mm reconstruction interval respectively and the images were transferred to a personal computer. Using a program developed to measure facial soft tissue thickness in 3D image, the facial soft tissue thickness was measured. After the ten-time repeation of the measurement for ten times, repeated measure analysis of variance (ANOVA) was adopted to compare and analyze the measurements using the three scanning protocols. Comparison according to the areas was analyzed by Mann-Whitney test.
RESULTS
There were no statistically significant intraobserver differences in the measurements of the facial soft tissue thickness using the three scanning protocols (p>0.05). There were no statistically significant differences between measurements in the 3 mm slice thickness and those in the 5 mm, 7 mm slice thickness (p>0.05). There were statistical differences in the 14 of the total 30 measured points in the 5 mm slice thickness and 22 in the 7mm slice thickness.
CONCLUSION
The facial soft tissue thickness measurement using 3D images of 7 mm slice thickness is acceptable clinically, but those of 5 mm slice thickness is recommended for the more accurate measurement.

Keyword

Facial Soft Tissue Thickness; Measurement; Imaging, Three-Dimensional; Tomography, X-ray Computed; Slice Thickness
Full Text Links
  • KJOMR
Actions
Cited
CITED
export Copy
Close
Share
  • Twitter
  • Facebook
Similar articles
Copyright © 2021 by Korean Association of Medical Journal Editors. All rights reserved.     E-mail: koreamed@kamje.or.kr