The Causes of Marginal Discrepancy of Fixed Dental Prostheses: A Cross-Sectional Study

IF 0.5 Q4 DENTISTRY, ORAL SURGERY & MEDICINE
A. Ismail, Y. Gassara, D. Hadyaoui, M. Chérif
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引用次数: 0

Abstract

Objective Periodontal destruction observed in restored teeth is strongly caused by marginal discrepancy of the restoration, which is closely influenced by the tooth preparation, the technique of retraction and impression. Materials and Methods A hundred practitioners were selected to constitute the study’s sample. A self-administered questionnaire survey was carried out. The questionnaire was filled in the practitioner's office, completed in the absence of the investigator. However, it has been completed for some clarifications by an interview. A digital form made through the Google Forms application provided free by the Google search engine. The questionnaire included two sections: The identification of the practitioner: this is general information about the practitioner. The conduct of prosthetic treatment. The causes of marginal discrepancy: This section concerns the major factors responsible for a good marginal fit. The collected data was introduced and processed by the microcomputer using the statistical software XLSTAT 2015 for Windows. A simple statistical analysis made it possible to calculate the percentage of the different variables, from their frequency. Results There is a significant correlation between marginal discrepancy and the respect of the finish line geometry (p=0.001). The technique of retraction which provided the best marginal fit was the use of expasyl paste (p=0.18). There was a significant association between marginal discrepancy and the material of impression, marginal adaptation is found in 76% for impressions made by alginate, 45% for impressions made by silicone, and 100% for impressions made by polysulphides (p=0.01). Conclusion Within limitations of this study, it can be concluded that the respect of guidelines of preparation especially the finish line and the good choice of the retraction technique and the material of impression are the major keys to have a good marginal fit.
固定义齿边缘偏差原因的横断面研究
目的观察修复牙的牙周破坏主要是由修复体的边缘差异引起的,而边缘差异与牙体的预备、内缩和印模技术密切相关。材料与方法选取100名从业人员作为研究样本。进行了一项自我管理的问卷调查。问卷是在医生的办公室填写的,在调查员不在场的情况下完成。然而,它已经完成了一些澄清采访。通过谷歌搜索引擎免费提供的谷歌表单应用程序制作的数字表单。问卷包括两个部分:从业者的识别:这是关于从业者的一般信息。义肢治疗的进行边际差异的原因:这一节涉及到造成良好边际拟合的主要因素。利用XLSTAT 2015 for Windows统计软件对采集的数据进行了介绍和处理。一个简单的统计分析可以计算出不同变量的百分比,从他们的频率。结果边际差异与终点线几何形状之间存在显著相关(p=0.001)。使用expasyl膏体是提供最佳边缘拟合的后缩技术(p=0.18)。边际差异与印模材料之间存在显著关联,海藻酸盐印模的边际适应性为76%,硅胶印模为45%,聚硫化物印模为100% (p=0.01)。结论在本研究的局限性下,对预备指导原则特别是终点线的尊重、对牵入技术和印模材料的选择是获得良好边缘配合的关键。
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来源期刊
Open Dentistry Journal
Open Dentistry Journal DENTISTRY, ORAL SURGERY & MEDICINE-
CiteScore
2.00
自引率
0.00%
发文量
86
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