Lulwah Alreshaid, BDS, PhD candidate, Department of Clinical Sciences, Faculty of Dentistry, University of Toronto, Toronto M5G 1G6 ON, Canada; Department of Restorative Dental Sciences, College of Dentistry, King Saud bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia.
Wafa El-Badrawy, BDS, MSc, Department of Clinical Sciences, Faculty of Dentistry, University of Toronto, Toronto, ON, Canada.
Oper Dent. 2021 Nov 1;46(6):621-630. doi: 10.2341/20-212-C.
To investigate the latest teaching policies of posterior composite placement versus amalgam and to determine the actual numbers of posterior composites versus amalgam restorations placed in Canadian dental schools, over the years from 2008 to 2018.
Emails were sent to Chairs/Heads of Restorative Departments and Clinic Directors of all 10 Canadian dental schools to collect data in the forms of: 1) Questionnaire on current teaching policies of posterior composite and amalgam restorations; 2) data entry form to collect the actual numbers of posterior composite and amalgam restorations placed in their clinics.
For the teaching questionnaire, the response rate was 90% (n=9). Seven (78%) of the responding schools reported that they assign 25%-50% of their preclinical restorative teaching time towards posterior composite placement. While, three (33%) of the responding schools allocated 50%-75% of their restorative teaching towards amalgam placement. Data entry response rate was 80% (n=8). Amalgam material was dominant in the restoration distribution from 2008 to 2012. While from 2013 to 2018, resin composite material was dominant in all eight responding schools. Linear regression analysis revealed a significant increasing trend in placing posterior composites in all the responding schools over time (p<0.05).
Data analysis revealed a clear trend towards an increase of posterior composite restoration placement and a decrease in the number of amalgam restorations placed. However, the teaching time assigned for posterior composite is not aligned with quantity placed. Review and adjustment of time allocated for teaching and training of each material are recommended.
调查复合树脂在后牙修复中应用的最新教学政策，并确定 2008 年至 2018 年期间加拿大牙科学校每年实际应用复合树脂和银汞在后牙修复中的数量。
向加拿大 10 所牙科学校的修复科主任和临床主任发送电子邮件，收集以下数据：1）关于复合树脂和银汞修复体教学政策的问卷；2）收集诊所中应用的复合树脂和银汞修复体数量的数据录入表。
教学问卷的回复率为 90%（n=9）。7 所（78%）参与调查的学校报告称，他们将 25%-50%的临床前修复教学时间用于后牙复合树脂修复。而 3 所（33%）学校将 50%-75%的修复教学时间用于银汞合金修复。数据录入表的回复率为 80%（n=8）。从 2008 年至 2012 年，银汞合金材料在修复体分布中占主导地位。而从 2013 年至 2018 年，在所有 8 所参与调查的学校中，树脂复合材料在后牙修复中占主导地位。线性回归分析显示，随着时间的推移，所有参与调查的学校在后牙复合树脂修复体的应用中呈显著增加趋势（p<0.05）。
数据分析显示，在后牙复合树脂修复体的应用数量增加，而银汞合金修复体的数量减少。然而，用于后牙复合树脂修复的教学时间与实际应用数量不匹配。建议对每种材料的教学和培训时间进行审查和调整。
