根管封闭剂和锥形束CT拍摄参数对牙根纵裂诊断的影响

doi:10.13591/j.cnki.kqyx.2022.06.009

Abstract

Abstract: Objective To study the influence of different root canal sealers and scanning parameters on the diagnosis of vertical root fractures (VRF) by cone-beam computed tomography (CBCT). Methods Forty permanent premolars were collected. Teeth were randomly divided into 4 groups according to root canal sealers (iRoot SP, AH Plus, Ag-Zn-MCSNs, and the blank control group). After root canal filling, the VRF model was prepared, and then roots were placed into the alveolar fossa of human maxillary premolars. CBCT was taken 4 times per tooth (FOV 12 cm×8 cm, voxel size 0.30 mm; FOV 12 cm×8 cm, voxel size 0.15 mm; FOV 8 cm×8 cm, voxel size 0.15 mm; FOV 8 cm×8 cm, voxel size 0.30 mm). Two observers evaluated CBCT images. Results There was no significant difference in accuracy among experimental groups (P>0.05). The correct diagnosis of VRF was 1/3 region of axial plane root. Conclusion Different root filling sealers and different scanning parameters have no obvious effect on the performance of CBCT in diagnosing VRF. Using CBCT to diagnose VRF, physicians need to select smaller field of view and larger voxel on the premise of meeting clinical requirements, so as to reduce unnecessary radiation dose in medical imaging examination.

Key words: cone beam computed tomography, vertical root fracture, root canal sealers, radiation dose

CLC Number:

R781.05

RONG Di, WU Huili, WANG Ying, WANG Jingyan, ZHANG Juan, ZHOU Guangchao, GU Peiyu, WU Daming. Influence of root canal sealers and scanning parameters of cone beam computed tomography on diagnosis of vertical root fissure[J]. Stomatology, 2022, 42(6): 529-533.

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Influence of root canal sealers and scanning parameters of cone beam computed tomography on diagnosis of vertical root fissure

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