Department of Prosthodontics, Dental School, Ilam University of Medical Sciences, Ilam, Iran.
Department of Prosthodontics, Melbourne Dental School, Melbourne University, Melbourne, Australia.
J Prosthodont. 2021 Jul;30(6):520-539. doi: 10.1111/jopr.13345. Epub 2021 May 22.
To systematically review clinical and laboratory studies that investigated the accuracy of intraoral scanners in recording denture bearing areas.
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.
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.
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.
系统回顾评估口内扫描仪记录义齿承托区域准确性的临床和实验室研究。
电子和手动搜索以确定所有报道数字印模记录与义齿相关软组织准确性的临床和实验室研究。应用预定的纳入和排除标准后，对最终的文章列表进行审查以满足本研究的目的。
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。合格研究评估了口内扫描仪记录义齿支持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，评估了一些影响因素的效果，例如人工标记物、扫描头大小、扫描策略和操作人员的经验。
虽然口内扫描仪在记录附着黏膜的骨结构方面与传统技术具有可比性，但它们无法准确记录活动组织。此外，存在标记物、更大的扫描头尺寸和特定的扫描技术等因素似乎可以提高数字印模的准确性。
