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대한구강악안면임프란트학회지 2018 ; 22 (4) : p.22~31

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Soft Tissue Measurement Method Using Radiopaque Material on Cone-beam Computed Tomography: An Ex Vivo Validation Study

저자 Hae-Seok Lee1, Jeong-Ho Yun2, Dong-Won Lee1*
논문 종류 원저 전문 보기 22-4_2.pdf 22-4_2.pdf
Purpose: The purpose of this study was to investigate the validity and reproducibility of a
method based on cone-beam computed tomography (CBCT) technology for the visualization and
measurement of gingival soft-tissue dimensions.
Material and Methods: A total of 66 selected points in soft-tissue of the ex vivo head of an adult
pig were investigated in this study. For the measurement of radiographic thickness (RT), wet softtissue
surfaces were lightly covered with barium sulfate powder using a powder spray. CBCT was
taken and DICOM files were assessed for soft-tissue thickness measurement at reference points.
A periodontal probe and a rubber stop were used for the measurement of trans-gingival probing
thickness (TPT). After flap elevation, actual thickness of soft-tissue (actual thickness, AT) was
measured. Correlation analysis and intraclass correlation coefficients analysis (ICC) were performed
for AT, TPT, and RT.
Results: All variables were distributed normally. Strong significant correlations of AT with RT
and TPT values were found. The two ICC values between TPT vs. AT and RT vs. AT differed
significantly.
Conclusion: Our results indicated that correlation of RT was stronger than that of TPT with AT. We
concluded that soft tissue measurement with CBCT could be a reliable method, compared to the
trans-gingival probing measurement method.
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