目的:系统回顾研究口腔内扫描仪记录义齿承载区域的准确性的临床和实验室研究。
方法:进行电子和人工搜索,以确定所有可用的临床和实验室研究,这些研究报告了数字印模记录义齿相关软组织的准确性。在应用预定的纳入和排除标准后,对最终的文章列表进行了审查,以达到本研究的目标.
结果:18项研究符合纳入标准,其中8项为临床研究,其余为实验室研究。符合条件的研究评估了口内扫描仪记录义齿支撑结构和周围活动组织的准确性。各种口内扫描仪的准确性结果不同。同样,几个影响因素的影响,如人工标记,扫描头尺寸,扫描策略,和运营商的经验,进行了评估。
结论:虽然口内扫描仪在记录附着粘膜的骨结构方面的准确性与传统技术相当,他们无法准确记录移动组织。此外,因素,如标记的存在,更大的扫描头尺寸和特定的扫描技术似乎提高了数字印模的准确性。
OBJECTIVE: To systematically review clinical and laboratory studies that investigated the accuracy of intraoral scanners in recording denture bearing areas.
METHODS: Electronic and manual searches were conducted to identify all the available clinical and laboratory studies reporting the accuracy of digital impressions for recording denture related soft tissues. After the application of predetermined inclusion and exclusion criteria, the final list of articles was reviewed to meet the objective of this study.
RESULTS: The inclusion criteria were met by 18 studies out of which 8 were clinical and the rest were laboratory investigations. The eligible studies assessed the accuracy of intraoral scanners in recording both the denture supporting structures and the peripheral mobile tissues. The accuracy results were different among the various intraoral scanners. Likewise, the effect of several influencing factors, such as artificial markers, scanner head size, scanning strategy, and the operator\'s experience, were evaluated.
CONCLUSIONS: While the accuracy of intraoral scanners was comparable to the conventional techniques in recording bony structures with attached mucosa, they were not capable of accurately registering the mobile tissues. In addition, factors such as presence of a marker, larger scanner head size and specific scanning techniques appeared to improve the accuracy of the digital impression.