PDF(Pubmed)
Abstract：
OBJECTIVE: This study aimed to investigate whether the accuracy of intraoral scanners is influenced by different scanning strategies in an in vitro setting, through a systematic review and meta-analysis.
METHODS: This review was conducted in accordance with the PRISMA 2020 standard. The following PICOS approach was used: population, tooth impressions; intervention, the use of intraoral scanners with scanning strategies different from the manufacturer\'s instructions; control, the use of intraoral scanners following the manufacturers\' requirements; outcome, accuracy of intraoral scanners; type of studies, in vitro. A comprehensive literature search was conducted across various databases including Embase, SciELO, PubMed, Scopus, and Web of Science. The inclusion criteria were based on in vitro studies that reported the accuracy of digital impressions using intraoral scanners. Analysis was performed using Review Manager software (version 5.3.5; Cochrane Collaboration, Copenhagen, Denmark). Global comparisons were made using a standardized mean difference based on random-effect models, with a significance level of α = 0.05.
RESULTS: The meta-analysis included 15 articles. Digital impression accuracy significantly improved under dry conditions (P < 0.001). Moreover, trueness and precision were enhanced when artificial landmarks were used (P ≤ 0.02) and when an S-shaped pattern was followed (P ≤ 0.01). However, the type of light used did not have a significant impact on the accuracy of the digital intraoral scanners (P ≥ 0.16).
CONCLUSIONS: The accuracy of digital intraoral scanners can be enhanced by employing scanning processes using artificial landmarks and digital impressions under dry conditions.
METHODS: This review was conducted in accordance with the PRISMA 2020 standard. The following PICOS approach was used: population, tooth impressions; intervention, the use of intraoral scanners with scanning strategies different from the manufacturer\'s instructions; control, the use of intraoral scanners following the manufacturers\' requirements; outcome, accuracy of intraoral scanners; type of studies, in vitro. A comprehensive literature search was conducted across various databases including Embase, SciELO, PubMed, Scopus, and Web of Science. The inclusion criteria were based on in vitro studies that reported the accuracy of digital impressions using intraoral scanners. Analysis was performed using Review Manager software (version 5.3.5; Cochrane Collaboration, Copenhagen, Denmark). Global comparisons were made using a standardized mean difference based on random-effect models, with a significance level of α = 0.05.
RESULTS: The meta-analysis included 15 articles. Digital impression accuracy significantly improved under dry conditions (P < 0.001). Moreover, trueness and precision were enhanced when artificial landmarks were used (P ≤ 0.02) and when an S-shaped pattern was followed (P ≤ 0.01). However, the type of light used did not have a significant impact on the accuracy of the digital intraoral scanners (P ≥ 0.16).
CONCLUSIONS: The accuracy of digital intraoral scanners can be enhanced by employing scanning processes using artificial landmarks and digital impressions under dry conditions.
摘要：
目的：本研究旨在调查在体外环境中，口内扫描仪的准确性是否受到不同扫描策略的影响，通过系统评价和荟萃分析。
方法：本综述按照PRISMA2020标准进行。使用了以下PICOS方法：人口，牙齿印模；干预，使用与制造商说明不同的扫描策略的口内扫描仪；控制，按照制造商的要求使用口内扫描仪；结果，口内扫描仪的准确性；研究类型，在体外。在包括Embase在内的各种数据库中进行了全面的文献检索，SciELO,PubMed,Scopus,和WebofScience。纳入标准基于体外研究，该研究报告了使用口内扫描仪进行数字印模的准确性。使用ReviewManager软件（5.3.5版；CochraneCollaboration，哥本哈根,丹麦)。使用基于随机效应模型的标准化平均差进行全球比较，显著性水平为α=0.05。
结果：荟萃分析包括15篇文章。在干燥条件下，数字印模精度显着提高（P<0.001）。此外，当使用人工地标(P≤0.02)和遵循S形模式(P≤0.01)时,真实性和精确性得到提高。然而,所用光的类型对数字口内扫描仪的准确性没有显著影响(P≥0.16).
结论：通过在干燥条件下使用人工标志和数字印模的扫描过程，可以提高数字口内扫描仪的准确性。
方法：本综述按照PRISMA2020标准进行。使用了以下PICOS方法：人口，牙齿印模；干预，使用与制造商说明不同的扫描策略的口内扫描仪；控制，按照制造商的要求使用口内扫描仪；结果，口内扫描仪的准确性；研究类型，在体外。在包括Embase在内的各种数据库中进行了全面的文献检索，SciELO,PubMed,Scopus,和WebofScience。纳入标准基于体外研究，该研究报告了使用口内扫描仪进行数字印模的准确性。使用ReviewManager软件（5.3.5版；CochraneCollaboration，哥本哈根,丹麦)。使用基于随机效应模型的标准化平均差进行全球比较，显著性水平为α=0.05。
结果：荟萃分析包括15篇文章。在干燥条件下，数字印模精度显着提高（P<0.001）。此外，当使用人工地标(P≤0.02)和遵循S形模式(P≤0.01)时,真实性和精确性得到提高。然而,所用光的类型对数字口内扫描仪的准确性没有显著影响(P≥0.16).
结论：通过在干燥条件下使用人工标志和数字印模的扫描过程，可以提高数字口内扫描仪的准确性。
