Memarpour Mahtab, Shahidi Shoaleh, Meshki Razieh
Department of Pediatric Dentistry, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran.
Pediatr Dent. 2013 May-Jun;35(3):236-40.
The purpose of this study was to compare six methods of root canal filling in primary mandibular second molars via digital radiography.
A total of 239 canals were prepared and obturated with zinc-oxide eugenol paste. Obturation methods compared were: anesthetic syringe; NaviTip syringe; pressure syringe; tuberculin syringe; lentulo spiral; and packing with a plugger. The canals were evaluated in photostimulated phosphor radiographs for length of obturation, presence of voids, and number and sum of void sizes. The data were analyzed using chi-square, Kruskal-Wallis and Mann-Whitney tests.
There were significant differences between all groups in the length of obturation (P>.01) and presence of voids (P<.001). The lentulo and tuberculin syringe groups, respectively, showed the best and worst results for length of obturation. Significant differences were also found in the number of voids (P<.001) and mean sum of void sizes in the coronal (P<.001) and middle third (P=.003). For the number and size of the voids, the NaviTip group showed the best results.
Lentulo produced the best results in terms of length of obturation, while NaviTip syringe produced the best results in controlling paste extrusion from the apical foramen and having the smallest void size and lowest number of voids.
本研究旨在通过数字放射成像比较六种下颌乳第二磨牙根管充填方法。
共预备并使用氧化锌丁香油糊剂充填239个根管。比较的充填方法有：麻醉注射器；NaviTip注射器；压力注射器；结核菌素注射器；螺旋输送器；以及用充填器充填。在光激励荧光放射照片上评估根管的充填长度、是否存在空隙以及空隙大小的数量和总和。使用卡方检验、Kruskal-Wallis检验和Mann-Whitney检验分析数据。
所有组在充填长度（P>.01）和是否存在空隙（P<.001）方面均存在显著差异。螺旋输送器组和结核菌素注射器组在充填长度方面分别显示出最佳和最差结果。在空隙数量（P<.001）以及冠部（P<.001）和中1/3（P=.003）空隙大小的平均总和方面也发现了显著差异。对于空隙的数量和大小，NaviTip组显示出最佳结果。
就充填长度而言，螺旋输送器产生的结果最佳，而NaviTip注射器在控制糊剂从根尖孔挤出、空隙尺寸最小和空隙数量最少方面产生的结果最佳。
