School of Dentistry and Oral Health, Griffith University, Gold Coast, Australia.
National Dental Research Institute Singapore, National Dental Centre Singapore, Singapore.
Aust Dent J. 2021 Mar;66(1):61-66. doi: 10.1111/adj.12807. Epub 2020 Dec 5.
The use of amalgam in Dentistry has decreased since the 1980s. This study aimed to (i) assess the time trend in the usage of amalgam and composite in posterior teeth at Griffith University Dental Clinic from 2010 to 2019; (ii) to test whether this trend varied according to the dental health provider.
We analysed clinic records from 2010 to 2019. Prais-Winsten analyses were performed, and the average annual percentages change (AAPC) for amalgam and composite was estimated.
There were 397,013 procedures, including 80,995 direct posterior restorations. Amalgam use decreased from 12.9% in 2010 to 0.5% in 2019 among students, while composite use increased from 87.1% to 99.5% of posterior restorations. The annual increase of the composite was 1.4% per year for students, while amalgam decreased by 30.2% per year on average. A similar trend was noted among the dentists.
A significant decrease in the use of amalgam was observed over time for both students and professionals. This trend raises questions about curriculum reviews, focusing on the repair, maintenance and safe removal of amalgam while reinforcing the learning on Minimally Invasive Dentistry and composite restorations based on the patient's caries risk.
自 20 世纪 80 年代以来，牙科领域中汞合金的使用有所减少。本研究旨在：（i）评估 2010 年至 2019 年格里菲斯大学牙科诊所后牙中汞合金和复合树脂的使用时间趋势；（ii）检验这种趋势是否因牙医的不同而有所差异。
我们分析了 2010 年至 2019 年的临床记录。采用 Prais-Winsten 分析，并估计了汞合金和复合树脂的平均年百分比变化（AAPC）。
共进行了 397,013 例治疗，其中 80,995 例为直接后牙修复。学生群体中，汞合金的使用率从 2010 年的 12.9%下降至 2019 年的 0.5%，而复合树脂的使用率则从 87.1%上升至 99.5%。对于学生群体，复合树脂的年增长率为每年 1.4%，而汞合金的年平均降幅为 30.2%。牙医群体中也观察到类似的趋势。
学生和专业人员的汞合金使用率随着时间的推移呈现出显著下降的趋势。这种趋势引发了人们对课程审查的关注，重点关注对汞合金的修复、维护和安全去除，同时加强基于患者龋齿风险的微创牙科和复合树脂修复的学习。
