J Endod:动态导航系统定位钙化根管的准确性和效率

2020-08-18 lishiting MedSci原创

钙化根管在牙髓治疗中是一项挑战。这篇研究的目的是为了评估针对freehand (FH)技术的动态导航系统(DNS)定位人牙齿钙化根管的准确性和效率。

钙化根管在牙髓治疗中是一项挑战。这篇研究的目的是为了评估针对freehand (FH)技术的动态导航系统(DNS)定位人牙齿钙化根管的准确性和效率。

研究选取60颗人的单根管并且根管影像消失的牙齿并将其埋入干燥的尸体颌骨内。基于CBCT对颌骨的扫描,通过X-guide软件(X-Nav Technologies)设计实际钻入的通道和深度。由2名具有不同经验的操作者通过导航和无引导条件下分别在DNS和FH组中实施窝洞预备。术后通过CBCT对所有牙齿再次进行扫描。检测2种水平下的线性和角度差异以及牙本质厚度减少情况。确定和分析定位根管的时间、失败的数量和未成功的尝试。

结果显示,DNS组线性和角度差异、减少的牙本质厚度、通路预备的时间和失败的数量均显著低于FH组(P≤0.05)。2组未成功的尝试之间未见显著性差异(P>0.05)。FH组中经过学会认证的牙髓病科医师入路预备的时间明显更短(P≤0.05)。

结论:DNS在人牙齿中定位钙化根管的准确率和效率均明显优于free hand技术。这种全新的动态导航系统能够帮助临床医师在钙化牙齿中进行入路预备时避免不幸事间的发生。

原始出处:

Omid Dianat, Ali Nosrat, et al. Accuracy and Efficiency of a Dynamic Navigation System for Locating Calcified Canals. J Endod., 2020 Jul 18;S0099-2399(20)30501-X. doi: 10.1016/j.joen.2020.07.014.

 

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