METHODS: Data were collected from the Swedish Social Insurance Agency\'s register. A search for treatment codes identified teeth root filled in 2009 and the type of coronal restoration (direct, indirect, and unspecified) registered within 6 months of root filling. The root-filled teeth were followed 10-11 years, and further interventions were recorded. Descriptive statistics and chi-square tests were used for statistical analysis.
RESULTS: In 2009, root fillings were registered for 215,611 individuals/teeth. Nonsurgical retreatment, root-end surgery, and extraction were undertaken in 3.5%, 1.4%, and 20% teeth, respectively. The frequency of further interventions varied with respect to tooth group and type of coronal restoration, but only slightly for endodontic retreatments. Further interventions, except for root-end surgery, were registered more often for molars and directly restored teeth (P < .001). The majority of endodontic retreatments were undertaken within 4 years, while extractions were evenly distributed over 10-11 years.
CONCLUSIONS: The frequency numbers of nonsurgical retreatment and root-end surgery were low, despite 1 in 5 root-filled teeth registered as extracted. Further interventions were most common in molars and directly restored teeth. Endodontic retreatments were performed more often during the first 4 years.
方法:数据来自瑞典社会保险机构的登记册。对治疗代码的搜索确定了2009年填充的牙根和冠状修复的类型(直接,间接,未指定)在根填充后6个月内注册。对充满牙根的牙齿进行了10-11年的随访,并记录了进一步的干预措施。采用描述性统计和卡方检验进行统计分析。
结果:2009年,记录了215,611个人/牙齿的根填充物。非手术再治疗,根端手术,提取量为3.5%,1.4%,20%的牙齿,分别。进一步干预的频率因牙组和冠状修复类型而异,但只有轻微的牙髓再治疗。进一步的干预措施,除了根端手术,磨牙和直接修复牙齿的登记频率更高(P<0.001)。大多数牙髓再治疗是在4年内进行的,而提取物在10-11年内均匀分布。
结论:非手术再治疗和根端手术的频率较低,尽管五分之一的牙根填充牙齿注册为拔牙。进一步的干预最常见于磨牙和直接修复的牙齿。在最初的4年中,牙髓再治疗的频率更高。