De Moor R J, Martens L C
Department of Operative Dentistry and Endodontology, School of Dentistry, University Hospital, University of Gent, Belgium.
Endod Dent Traumatol. 1999 Oct;15(5):239-43. doi: 10.1111/j.1600-9657.1999.tb00780.x.
The purpose of the present study was to evaluate the apical seal of root canals filled with a cold lateral condensation, a hybrid gutta-percha condensation technique and with Soft-Core obturators. Three groups of 35 maxillary anterior teeth and four control anterior teeth were treated with a crown-down/step-back technique. All roots were submerged in India ink for 1 week. The roots were cleared and the degree of linear dye penetration was measured. The mean apical leakage for the Soft-Core technique was at least twice as extensive as for the two other gutta-percha obturation techniques. No statistically significant differences were found between the two other condensation techniques.
本研究的目的是评估采用冷侧向加压法、混合牙胶尖加压技术以及Soft-Core充填器进行根管充填后的根尖封闭情况。将三组各35颗上颌前牙和四颗对照前牙采用冠向下/逐步后退技术进行治疗。所有牙根均浸泡在印度墨水中1周。将牙根清理后测量线性染料渗透程度。Soft-Core技术的平均根尖微渗漏至少是其他两种牙胶尖充填技术的两倍。其他两种加压技术之间未发现统计学上的显著差异。
