Liu Xiaoyun, Cameron Andrew B, Haugli Ketil Hegerstrøm, Mougios Adriane Andersen, Heng Nicholas C K, Choi Joanne Jung Eun
Sir John Walsh Research Institute, Faculty of Dentistry, University of Otago, Dunedin, New Zealand.
Sir John Walsh Research Institute, Faculty of Dentistry, University of Otago, Dunedin, New Zealand; School of Medicine and Dentistry, Griffith University, Gold Coast, Australia; Menzies Health Institute Queensland Disability & Rehabilitation Centre, Gold Coast, Australia.
J Mech Behav Biomed Mater. 2025 Jan;161:106813. doi: 10.1016/j.jmbbm.2024.106813. Epub 2024 Nov 12.
To systematically review the current literature investigating the computer-aided design/computer-aided manufacturing (CAD/CAM) diamond bur deterioration with repeated use and its effects on the accuracy, marginal and internal fit, and surface roughness of the dental ceramic restorations from the subtractive manufacturing technique.
Three online databases, Ovid, Scopus, and Web of Science, were screened up to February 2024. In vitro studies investigating bur wear and its influences on subtractively-manufactured (SMed) ceramic restorations, except zirconia, were included. The selected articles were limited to English-language and peer-reviewed publications. Additionally, a manual search was conducted by screening the reference lists of included studies. The risk of bias of included articles was assessed following the modified Consolidated Standards of Reporting Trials (CONSORT) checklist.
Twelve studies satisfied the inclusion criteria and were included. Only one study reported that the influence of bur deterioration on the trueness of SMed restorations depended on the crown areas, but the proximal contacts showed a significant reduction. Five studies assessed the effect on marginal and internal adaptation. To a certain extent, repeated use of the same diamond burs causes a progressive increase in the marginal gap and a slight decrease in the internal luting space. Half of the included studies assessed surface roughness. The influence of bur wear was mainly due to the bur-material combination.
During subtractive manufacturing, bur deterioration is a crucial factor influencing the quality of fabricated ceramic restorations. Diamond burs must be replaced regularly to avoid compromising the accuracy of subtractively manufactured restorations.
系统回顾当前关于计算机辅助设计/计算机辅助制造（CAD/CAM）金刚石车针反复使用后磨损情况及其对减材制造技术的牙科陶瓷修复体的精度、边缘和内部适合性以及表面粗糙度影响的文献。
检索了截至2024年2月的三个在线数据库，即Ovid、Scopus和Web of Science。纳入了研究车针磨损及其对除氧化锆外的减材制造（SMed）陶瓷修复体影响的体外研究。所选文章限于英文且经过同行评审的出版物。此外，通过筛选纳入研究的参考文献列表进行了手动检索。根据修改后的《报告试验的统一标准》（CONSORT）清单评估纳入文章的偏倚风险。
12项研究符合纳入标准并被纳入。只有一项研究报告称，车针磨损对SMed修复体准确性的影响取决于牙冠区域，但邻面接触有显著减少。五项研究评估了对边缘和内部适应性的影响。在一定程度上，同一金刚石车针的反复使用会使边缘间隙逐渐增大，内部粘结间隙略有减小。纳入研究的一半评估了表面粗糙度。车针磨损的影响主要归因于车针与材料的组合。
在减材制造过程中，车针磨损是影响陶瓷修复体制作质量的关键因素。必须定期更换金刚石车针，以避免影响减材制造修复体的准确性。
