Hawthorne W S, Smales R J
Dental Section, 6 Hospital, Laverton, Victoria.
Aust Dent J. 1997 Feb;42(1):59-63. doi: 10.1111/j.1834-7819.1997.tb00099.x.
Very little is known of dentist and patient factors which may influence the survival or longevity of dental restorative materials placed in private practices. The present retrospective study investigated during 1992 the effects of six factors on the long-term survivals of five types of restorations placed by 20 male dentists in 100 adult patients, at 3 selected Adelaide dental practices. There were no significant effects on restoration survival from change, of dentist, and generally only one or two types of restorations had their survivals influenced significantly either by dental practice location, or by patient age, frequency of patient attendance, experience of dentist, and whether or not the restorations were replacements during the study period. Restoration survival was not influenced significantly by whether, or not, any replacements were made by the dentist who placed the initial restorations. The median survival times for amalgams were 22.52 years, resin composites 16.72 years, castings 13.75 years, and crowns an estimated 26 years. For glass-ionomers, 75 per cent were still present at 11.25 years.
对于可能影响私人诊所中牙科修复材料使用寿命或耐久性的牙医和患者因素，我们了解甚少。本回顾性研究于1992年调查了在阿德莱德选定的3家牙科诊所中，20名男性牙医为100名成年患者放置的5种修复体的长期存留情况，研究了6个因素的影响。牙医的更换对修复体存留无显著影响，一般来说，只有一两种修复体的存留受到牙科诊所位置、患者年龄、患者就诊频率、牙医经验以及在研究期间修复体是否为替换体的显著影响。最初放置修复体的牙医是否进行任何替换，对修复体存留无显著影响。汞合金的中位存留时间为22.52年，树脂复合材料为16.72年，铸造修复体为13.75年，牙冠估计为26年。对于玻璃离子体，75%在11.25年时仍存在。
