A study of implant/abutment interface with internal anti-rotation configuration

具有内部防旋转结构的种植体/基台界面的研究

基本信息

批准号：
17592047
负责人：
HAGIWARA Yoshiyuki
金额：
$ 1.34万
依托单位：
Nihon University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2005
资助国家：
日本
起止时间：
2005 至 2006
项目状态：
已结题

项目摘要

There is no evidence that the internal anti-rotational configurations are better than the external ones. As a part of a study to clarify the features of internal anti-rotational configurations, this present study was to evaluate the implant-abutment marginal fit and micro gap of implant-abutment interface with the internal anti-rotational configurations. Three internal connection and two external hex connection implant-abutment assemblies were subjected to this study. The implant-abutment interface (I-A interface) was evaluated with three geometrical factors. The marginal fit and micro gap were measured by a scanning laser microscope. The I-A interface was observed using a scanning electron microscope. Mean vertical discrepancies were ranged from 19.8 to 58.1 μm, and horizontal discrepancies were-27.1 to 16.2 μm. The micro gap values of all I-A interface which subjected to this study were ranged from 2.3 μm to 5.6 μm.Internal connection implants have been used clinically for only a short period and it is difficult to say that a sufficient number of fundamental studies and clinical evaluations have been conducted, and as such, one would have to say that there is a lack of evidence to support their use. Therefore, asked dentists who currently use internal connection implants to answer a questionnaire in order to ascertain users' subjective evaluations of internal connection implants. The dentists' assessments indicated that internal connection implants are as user-friendly as external hex implants with respect to implant surgery, but they are easier to use in prosthodontic treatments because abutment placement is easy. In addition, it was revealed that dentists strongly feel that there is a lack of biological evidence and prosthodontic evidence to support the use of internal connection implants.

没有证据表明内部抗旋转构型比外部构造更好。作为阐明内部抗旋转构型特征的研究的一部分，本研究是评估植入物的边际拟合和植入物态界面的微间隙，并使用内部抗旋转构型。这项研究对三个内部连接和两个外部六角植入物植入物组件进行了进行。用三个几何因素评估了植入物预防界面（I-A界面）。通过扫描激光显微镜测量边缘拟合和微间隙。使用扫描电子显微镜观察到I-A界面。平均垂直差异范围为19.8至58.1μm，水平差异为27.1至16.2μm。经过这项研究的所有I-A界面的微隙值范围从2.3μm到5.6μmm。内部连接螺旋杆仅在短时间内就在临床上使用了，很难说已经进行了足够数量的基础研究和临床评估，因此必须说，缺乏证据来支持其使用。因此，问目前使用内部连接的牙医问牙医来回答问卷，以确定用户对内部连接的主题评估。牙医的评估表明，内部连接在植入手术方面与外部六角形一样对用户友好，但是它们在假肢治疗中更易于使用，因为基台放置很容易。此外，据透露，牙科医生强烈认为缺乏生物学证据和修复证据来支持使用内部联系的使用。