Frisk F, Hugoson A, Hakeberg M
Department of Endodontology, The Institute for Postgraduate Dental Education, Jönköping, Sweden.
Int Endod J. 2008 Nov;41(11):958-68. doi: 10.1111/j.1365-2591.2008.01457.x.
To study changes in technical quality of root fillings and periapical status in root filled teeth in random samples of 20 to 70 year-olds between 1973 and 2003.
Data from dentate subjects aged 20-70 years from examinations conducted in 1973 (n = 498), 1983 (n = 530), 1993 (n = 547) and 2003 (n = 491) were used for the analysis. Length of root fillings were measured on radiographs to the nearest 0.1 mm. Adequate seal was defined as a root filling without lateral and/or apical voids. Periapical status was assessed according to the periapical index. All observations were made by one calibrated observer registered from full mouth radiographic examinations. Teeth with root fillings ending within the canal without lateral or apical voids were considered adequate. The association between root filling quality and periapical status was analysed by means of the Chi-squared test and a multilevel logistic regression analysis.
Adequately root filled teeth had a significantly lower frequency of apical periodontitis than inadequately root filled teeth (11.8% vs. 22.8%). The frequency of technically adequate root fillings increased statistically significant from 1973 (23.7%) to 2003 (36.4%) without a concomitant improvement of the periapical status in root filled teeth over time (24.5% vs. 24.6%).
This study reports on an improving technical quality of root fillings over time, without a concomitant improvement of the periapical status in root filled teeth. A larger proportion of treated molars over time may be of importance for the result.
研究1973年至2003年间20至70岁随机样本中根管充填牙齿的技术质量变化和根尖周状况。
使用1973年（n = 498）、1983年（n = 530）、1993年（n = 547）和2003年（n = 491）进行的检查中20 - 70岁有牙 subjects的数据进行分析。在X线片上测量根管充填长度，精确到最接近的0.1毫米。充分密封定义为无侧方和/或根尖空隙的根管充填。根据根尖周指数评估根尖周状况。所有观察均由一名经过校准的观察者从全口X线片检查中进行记录。根管充填在根管内结束且无侧方或根尖空隙的牙齿被认为是充分的。通过卡方检验和多水平逻辑回归分析来分析根管充填质量与根尖周状况之间的关联。
根管充填充分的牙齿根尖周炎发生率明显低于根管充填不充分的牙齿（11.8%对22.8%）。技术上充分的根管充填频率从1973年（23.7%）到2003年（36.4%）有统计学显著增加，但随着时间推移，根管充填牙齿的根尖周状况并未随之改善（24.5%对24.6%）。
本研究报告了随着时间推移根管充填技术质量有所提高，但根管充填牙齿的根尖周状况并未随之改善。随着时间推移，更多比例的治疗磨牙可能对结果具有重要意义。
