Nicolaisen S, von der Fehr F R, Lunder N, Thomsen I
Buskerud Public Dental Health Service, Kongsberg, Norway.
J Dent. 2000 Aug;28(6):383-7. doi: 10.1016/s0300-5712(00)00024-5.
the purpose of this study was to evaluate the success of the tunnel restoration method in the Norwegian public dental service.
all patients from three age cohorts (born 1975-1977) who had received one or more tunnel restorations at least 3 years earlier, at the public dental clinic in Kongsberg and a neighboring clinic in Numedal, were examined clinically and radiographically by two calibrated dentists. Individuals with two or more filled surfaces per year were classified as "caries active". The statistical analyses consisted of non-parametric Kaplan-Meyer estimates of the survival function, and rank tests for associations to the longevity data and the background variables.
a total of 182 restorations in 94 patients were studied. Sixty-five percent of the restorations were considered successful. A total of 118 restorations were censored within the 76-month observation period. The median survival time was estimated to be 55 months, with a 95% confidence interval of 51-61 months. About 90% survived 3 years, while only 35% survived 5 years. Both caries activity and operator had significant effects on the survival period. On the other hand, there was no difference between "wells" and "tunnels", tooth type, tooth surface or jaw with regard to success rate.
The tunnel preparation filled with currently available glass-ionomer cement is not a generally favorable alternative in primary approximal lesions. However, in the hands of a well-trained, careful operator it may be chosen as a semi-permanent solution for patients with modest caries activity.
本研究旨在评估挪威公共牙科服务中隧道修复方法的成功率。
对来自三个年龄组（出生于1975 - 1977年）的所有患者进行临床和影像学检查，这些患者至少在3年前于孔斯贝格的公共牙科诊所及努梅达尔的一家邻近诊所接受了一次或多次隧道修复，由两名经过校准的牙医进行检查。每年有两个或更多充填面的个体被归类为“龋活跃”。统计分析包括生存函数的非参数Kaplan - Meyer估计，以及与寿命数据和背景变量关联的秩检验。
共研究了94例患者的182次修复。65%的修复被认为是成功的。在76个月的观察期内，共有118次修复被截尾。中位生存时间估计为55个月，95%置信区间为51 - 61个月。约90%的修复存活3年，而只有35%存活5年。龋活性和操作人员对生存期均有显著影响。另一方面，“窝洞”和“隧道”、牙型、牙面或颌骨在成功率方面没有差异。
用目前可用的玻璃离子水门汀充填的隧道预备在乳牙邻面病变中并非普遍有利的选择。然而，在训练有素、操作仔细的操作人员手中，对于龋活性中等的患者，它可能被选为一种半永久性的解决方案。
