Consistency of the landmark identification on two types of cephalograms from cone-beam CT

doi:10.19439/j.sjos.2021.05.014

Abstract

Abstract: PURPOSE: To study the landmark consistency on two types of cephalograms reconstructed from the data of cone-beam CT(CBCT). METHODS: CBCT data of 56 patients without teeth missing were uploaded into Dolphin software and transferred to the cephalograms. In the control group, the right half projection was taken while in the experimental group, the images achieved after 6 individual projections were managed to achieve the synthesized cephalograms. One experienced orthodontists traced the 23 frequently-used landmarks and the consistency was compared by means of Hotelling T² test with SPSS 13.0 software package. RESULTS: The tracing of anterior nasal ridge, posterior nasal ridge, upper incisor root tip, lower incisor edge, lower incisor root tip and condyle showed significant difference(P<0.05). CONCLUSIONS: The synthesized cephalograms in the experimental group show the anatomical structure more precisely which is more beneficial to landmark identification.

Key words: Cone-beam CT, Cephalogram, Tracing

CLC Number:

R783.5

MA Xiao-qing, ZHAO Ning, DONG Xian, QIAN Wen-hao. Consistency of the landmark identification on two types of cephalograms from cone-beam CT[J]. Shanghai Journal of Stomatology, 2021, 30(5): 522-525.

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