Influence of implant shape, surface morphology, surgical technique and bone quality on the primary stability of dental implants
Influence of implant shape, surface morphology, surgical technique and bone quality on the primary stability of dental implants
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DOI：
10.1016/j.jmbbm.2012.10.010
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发表时间：
2012-12-01
影响因子：
3.9
通讯作者：
Coelho, Paulo Guilherme
中科院分区：
文献类型：
--
作者：
Elias, Carlos Nelson;Rocha, Felipe Assis;Coelho, Paulo Guilherme
种植体的初步稳定性已经被研究过，但关于种植体的形状、大小和表面形态(机械加工、酸蚀或阳极氧化)、手术技术(压合或过小)以及基材(天然或模拟骨)对种植体初期稳定性的影响的研究尚未见报道。本工作旨在填补这一空白。在这项工作中，在测量扭矩的同时，将六种不同的牙种植体插入和取出合成骨和天然骨。将255颗3种形状、4种大小、3种表面形态的种植体植入猪肋骨、聚四氟乙烯和聚氨基甲酸酯。种植部位是用直钻和锥钻准备的。根据最大插入力矩估计初步稳定性。样本之间的比较基于最大插入扭矩(MIT)、最大移除扭矩(MRT)和扭矩比(TR=MRT/MIT)。猪肋骨插入力矩的离散度较大。所有参数(种植体的形状、大小和表面形态、手术技术和基质类型)都对初始稳定性有显著影响。锥形植入物的插入比直形植入物的插入需要更大的扭矩。表面处理提高了原生稳定性。手术方式的影响小于种植体大小和形状的影响。最大的插入扭矩是插入尺寸较小的部位的阳极氧化锥形种植体。最后，种植体的初期稳定性在很大程度上取决于种植体的设计、手术技术和基质类型。(C)2012爱思唯尔有限公司。保留所有权利。
The primary stability of dental implants has been investigated before, but a study of the influence of implant shape, size and surface morphology (machined, acid etched or anodized), surgical technique (press-fit or undersized) and substrate (natural or simulated bone) on the primary stability of dental implants has not been reported. The present work intends to fill this gap. In this work, six different dental implants were inserted into and removed from synthetic and natural bone while measuring the torque. A total of 255 dental implants with three shapes, four sizes and three surface topographies were inserted into pig rib, PTFE and polyurethane. The implant sites were prepared using straight and tapered drills. The primary stability was estimated from the maximum insertion torque. Comparisons between samples were based on the maximum insertion torque (MIT), the maximum removal torque (MRT) and the torque ratio (TR=MRT/MIT). The insertion torque into pig ribs showed larger dispersion. All parameters (shape, size and surface morphology of the implant, surgical technique and substrate type) were found to have a significant influence on primary stability. The insertion of a tapered implant requires a higher torque than the insertion of a straight implant. Surface treatments improve the primary stability. The influence of the surgical technique is smaller than that of implant size and shape. The highest insertion torque was that of anodized tapered implants inserted into undersized sites. Finally, the primary stability of dental implants is highly dependent on implant design, surgical technique and substrate type. (c) 2012 Elsevier Ltd. All rights reserved.