PDF(Pubmed)
Abstract：
Adequate root canal sealing is essential for the success of endodontic treatment. There are numerous techniques available; identifying simple and efficient techniques is important to provide good patient care. The purpose of the study was to compare the maximum penetration depth and the percentage of sealant penetration of an endodontic sealer into dentine tubules using cold lateral condensation, continuous wave, and hybrid techniques, and to contrast the effectiveness of two different tapered gutta-percha master cones (0.02 and 0.04). A sample of sixty single root teeth was used. Six experimental groups were formed from the three filling techniques and the two tapered master cones. Images were acquired using a confocal laser scanning microscope. In the apical root third, the penetration percentage was higher in the hybrid compared with the continuous wave technique. The results indicated a higher penetration depth of hybrid compared with cold lateral condensation in the middle and coronal thirds, and in the apical third, a higher penetration was identified in the hybrid group compared with the continuous wave group. No significant differences in penetration were found comparing 0.02 with 0.04 taper gutta-percha groups. The coronal cross-sections presented a higher penetration than the apical third sections. In conclusion, the hybrid technique a had higher maximum sealer penetration than the continuous wave in the apical third, and the coronal third hybrid and continuous wave had a higher penetration than cold lateral condensation.
摘要：
充分的根管密封对于牙髓治疗的成功至关重要。有许多可用的技术；识别简单有效的技术对于提供良好的患者护理很重要。该研究的目的是比较最大渗透深度和使用冷侧向冷凝的牙髓封闭剂进入牙本质小管的密封剂渗透百分比，连续波,和混合技术，并对比两种不同的锥形古塔胶主锥体（0.02和0.04）的有效性。使用了60颗单根牙齿的样本。由三种填充技术和两种锥形主锥组成六个实验组。使用共聚焦激光扫描显微镜获取图像。在根尖第三，与连续波技术相比，混合动力的穿透百分比更高。结果表明，与中部和冠状三分之一的冷侧向冷凝相比，混合粒子的穿透深度更高，在第三个顶端，与连续波组相比,杂交组的穿透率更高.与0.02和0.04锥度牙胶组相比，针入度没有显着差异。冠状横截面的穿透性高于顶端第三部分。总之,混合技术a在根尖三分之一处具有比连续波更高的最大密封剂穿透力，日冕第三混合波和连续波的穿透力高于冷侧向凝结。
