Correlation on the Measurements of Palatal Bone Thickness between Cone-beam Computed Tomography and Cephalometry.

doi:10.13701/j.cnki.kqyxyj.2016.03.021

Abstract

Abstract: Objective: To study the correlation of measurements of the palatal bone thickness between cone-beamcomputed tomography and cephalometry. Methods: Both CBCT images and cephalograms of 31 malocclusion patients were taken. Measurements in the anterior-posterior dimension were obtained from the touch point between the first and second premolars to the touch point between the first and second molars of bilateral maxillary. On CBCT images, the eccentric distance wasset from 1.5mm to 10mm. SPSS19 was used for statistical analysis. Results: In the P1P2 and P2 areas, the CBCT measurements of palatal bone thickness at both 1.5mm and 5mm off-center were significantly less than the cephalometric measurements. Measurement on CBCT images at 10mm off-centerandon cephalograms did not differ significantly in any areas. Both the CBCT and cephalometry measurements of palatal bone thickness at every eccentric distance declined from P1P2 to M1M2 in the anterior-posterior dimension. Conclusion: The measurements of the palatal bone thickness on CBCT and cephalometry were the closest at 10mm off-center. In the P1P2 area, it was relatively safe to embed mini-implants in the palatal bone at 5mm and 7.5mm off-center.

Key words: Palatal bone thickness, CBCT , Cephalogram , Mini-implant anchorage

CLC Number:

R783.5

LIU Cheng-ling, WANG Jun, REN Wei-ping, ZHOU Rui, LI Zhen-ya. Correlation on the Measurements of Palatal Bone Thickness between Cone-beam Computed Tomography and Cephalometry.[J]. Journal of Oral Science Research, 2016, 32(3): 297-300.

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