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Abstract：
Aim: To assess the association between demographic and clinical variables and the outcome of root-end surgery using digital periapical radiographs (PA) and cone-beam computed tomography (CBCT). Methodology: One hundred and fifty teeth that received endodontic microsurgery were clinically and radiographically examined (PA and CBCT scans) after 1 and 2 years. Two calibrated endodontists evaluated the radiographic healing based on a six-point outcome classification. The outcome was classified using both strict (healed) and loose (healing) criteria. The success rates were calculated, and several outcome prognostic factors were assessed. Results: One hundred and fifty teeth were assessed with both radiographic systems. When \"loose\" success criteria were applied using PA, 90% (n = 135) of teeth were assessed as having had a favourable outcome (90%; 95% CI: 85.2-94.8%), whereas 90.7% (n = 136) of teeth showed a successful outcome when assessed with CBCT (90.7%; 95% CI: 86.0-95.3%). When \"strict\" success criteria were applied, there was a statistically significant difference (p = 0.018) between the success rates of mineral trioxide aggregate (MTA) (63.7%) and Biodentine (95.5%). Conclusions: Within the limitations of this study, endodontic microsurgery showed a high success rate. Among all the demographic and clinical variables assessed, in the multiregression analysis, only the use of Biodentine was associated with a higher proportion of \"complete\" healings compared to MTA or Intermediate Restorative Material (IRM) when assessed using CBCT. MTA and Biodentine performed similarly when \"incomplete\" healings were regarded as successful outcomes.
摘要：
目的：使用数字根尖周X射线照片（PA）和锥形束计算机断层扫描（CBCT）评估人口统计学和临床变量与根端手术结果之间的关联。方法：1年和2年后，对接受牙髓显微手术的150颗牙齿进行了临床和影像学检查（PA和CBCT扫描）。两名校准的牙髓医生根据六点结果分类评估了放射学的愈合情况。使用严格（治愈）和宽松（治愈）标准对结果进行分类。计算了成功率，并评估了几个预后因素。结果：使用两种射线照相系统评估了150颗牙齿。当使用PA应用“宽松”成功标准时，90％（n=135）的牙齿被评估为具有良好的结果（90％;95％CI：85.2-94.8％），而用CBCT评估时，90.7％（n=136）的牙齿显示成功的结果（90.7％；95％CI：86.0-95.3％）。当应用“严格”成功标准时，三氧化二矿聚集体（MTA）（63.7％）和生物喷丁（95.5％）的成功率之间存在统计学上的显着差异（p=0.018）。结论：在本研究的局限性内，牙髓显微手术显示出较高的成功率.在评估的所有人口统计学和临床变量中，在多元回归分析中，当使用CBCT评估时,与MTA或中间修复材料(IRM)相比,仅使用Biodentine与较高比例的"完全"愈合相关.当“不完全”愈合被认为是成功的结果时，MTA和Biodentine的表现相似。
