植入角度对微种植体稳定性的影响

doi:10.13701/j.cnki.kqyxyj.2019.02.017

口腔医学研究 ›› 2019, Vol. 35 ›› Issue (2): 172-175.DOI: 10.13701/j.cnki.kqyxyj.2019.02.017

植入角度对微种植体稳定性的影响

吴也可^1*,赵立星²,郜然然¹

1. 成都中医药大学附属医院口腔科四川成都 610072;
2. 四川大学华西口腔医学院四川成都 610041

收稿日期:2018-08-19 出版日期:2019-02-18 发布日期:2019-02-25
通讯作者: 吴也可,E-mail:337872366@qq.com
作者简介:吴也可(1987~ ),男,成都人,主治医师,博士,主要从事口腔正畸学临床及基础研究,以及中医药防治牙周病的研究。

Effect of Insertion Angle on Stability of Loaded Titanium Microscrews

WU Ye-ke^1*,ZHAO Li-xing²,GAO Ran-ran¹

1. Department of Stomatology, Hospital of Chengdu University of TCM, Chengdu 610072, China;
2. West China College of Stomatology, Sichuan University, Chengdu 610041, China.

Received:2018-08-19 Online:2019-02-18 Published:2019-02-25

摘要/Abstract

摘要： 目的: 研究植入角度对应力加载下植入比格犬下颌骨的钛微种植体稳定性的影响。方法: 将48枚微种植体以4种不同角度(30°、50°、70°和90°)植入12只Beagle犬下颌第一磨牙和第三前磨牙根间区域,并即刻加载2 N应力,持续8周。采用显微CT和生物力学拉拔测试研究种植体-骨界面骨整合情况。结果: 所有微种植体显微CT检测指标和最大拉拔力值(F_max)均受不同植入角度影响。在50°和70°组观测到微种植体具有更高显微CT参数和F_max(P＜0.05),而过度倾斜或垂直均可导致稳定性下降(P＜0.05)。结论: 相较过度倾斜或垂直,50°~70°的植入角度更有利于微种植体获得稳定性。

关键词: 植入角度, 骨整合, 微种植体, 显微CT, 生物力学

Abstract: Objective : To evaluate the effect of insertion angle on stability of loaded titanium microscrews in beagle jaws. Methods: 48 microscrews were inserted at four different angles (30°,50°, 70°, and 90°) into intraradicular zones of the mandibular first molars and third premolars of 12 beagles and immediately loaded with 2 N for 8 weeks. Microcomputed tomography (micro-CT) and biomechanical pull-out tests were used to assess osseointegration of the interface. Results: All micro-CT parameters and maximum pull-out force (F_max) of the microscrews were affected by insertion angles of microscrews. Higher micro-CT parameters and F_max were seen for implants inserted at angles between 50°and 70°(P＜0.05). Excessive oblique and vertical insertion angles resulted in reduced stability (P＜0.05). Conclusion: An insertion angle of 50°to 70°is more favorable than excessive oblique or vertical angles to achieve stability of microscrews.

Key words: Insertion angle, Osseointegration, Microscrews, Microcomputed tomography, Biomechanics

吴也可,赵立星,郜然然. 植入角度对微种植体稳定性的影响[J]. 口腔医学研究, 2019, 35(2): 172-175.

WU Ye-ke,ZHAO Li-xing,GAO Ran-ran.. Effect of Insertion Angle on Stability of Loaded Titanium Microscrews[J]. Journal of Oral Science Research, 2019, 35(2): 172-175.

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植入角度对微种植体稳定性的影响

Effect of Insertion Angle on Stability of Loaded Titanium Microscrews

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