下颌后牙区骨皮质厚度对牙种植精度的影响

doi:10.13591/j.cnki.kqyx.2022.08.007

Abstract

Abstract: Objective To investigate the influence of cortical bone thickness (CBT) in mandibular posterior region on dental implantation accuracy. Methods A total of 30 patients at an average age of 43.1 with 37 implants in mandibular posterior dental area who were admitted to Stomatology Center of the First Affiliated Hospital of University of Science and Technology of China from June to December 2020 were included. CBT of bone in the implant area was measured in postoperative CBCT, and implants were divided into two groups according to CBT (group A, CBT≥1.5 mm; group B, CBT<1.5 mm). The deviation of implantations in the implant neck and apex as well as the angular errors were analyzed with precision verification software. Results The implant accuracy of CBT≥1.5 mm group was better than that of CBT<1.5 mm group in terms of implant point, implant end and implant angle (P<0.05). Conclusion When the thickness of bone cortex in the proposed planting area is low, precision of dental implantation may be reduced. Therefore, such patients should be treated with more caution in clinical practice.

Key words: cone-beam CT, cortical bone thickness, tooth implant, dynamic navigation, accuracy

CLC Number:

R783.4

CHEN Yuyan, ZHANG Zhihong, LIU Honghong, HAN Qian, CHEN Jia, DUAN Linna. Influence of cortical bone thickness in mandibular posterior region on the accuracy of implantation[J]. Stomatology, 2022, 42(8): 713-716.

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Influence of cortical bone thickness in mandibular posterior region on the accuracy of implantation

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