Mjör Ivar A, Dahl Jon E, Moorhead Jacquelyn E
Department of Operative Dentistry, University of Florida, Gainesville 32610, USA.
Acta Odontol Scand. 2002 Jan;60(1):25-8. doi: 10.1080/000163502753471961.
This practice-based study aimed to record the use of restorative materials, the type of restoration by class, and the reason for and the age of failed restorations in primary teeth by means of a survey of placement and replacement of restorations in 1996 and 2000/2001. Written alternative criteria for placement and replacement of restorations were provided for the participating clinicians. Details on 2281 restorations showed that primary caries was the main reason for inserting restorations in primary teeth. Replacements of failed restorations represented 14% of the fillings (n = 2040) in 1996 and 9% in 2000/2001 (n = 241). More than 80% or the fillings in primary teeth were of tooth-colored material, predominantly of the light-cured type. About 50% of failed amalgam and glass ionomer-type restorations were replaced due to secondary caries. The median age of amalgam restorations (3 years) was significantly higher than that of tooth-colored restorations (2 years). Any possible advantage of a cariostatic effect of glass ionomer-type materials is apparently annulled by their short longevity compared with amalgam.
这项基于实践的研究旨在通过对1996年以及2000/2001年修复体的放置和替换情况进行调查，记录乳牙修复材料的使用情况、按类别划分的修复类型、修复失败的原因以及失败修复体的年龄。为参与研究的临床医生提供了关于修复体放置和替换的书面替代标准。2281个修复体的详细信息表明，乳牙龋是在乳牙中插入修复体的主要原因。1996年，失败修复体的替换占填充物（n = 2040）的14%，2000/2001年占9%（n = 241）。超过80%的乳牙填充物是牙色材料，主要是光固化型。约50%的汞合金和玻璃离子型修复体因继发龋而被替换。汞合金修复体的中位年龄（3岁）显著高于牙色修复体（2岁）。与汞合金相比，玻璃离子型材料的防龋作用的任何可能优势显然都因其使用寿命短而被抵消。
