Yücel Ali Cağin, Ciftçi Alper
Ondokuz Mayis University, Faculty of Dentistry, Department of Restorative Dentistry, Samsun, Turkey.
Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2006 Oct;102(4):e88-92. doi: 10.1016/j.tripleo.2006.02.007. Epub 2006 Aug 14.
The aim of this study was to compare bacterial penetration following obturation with 5 different techniques.
This study was performed on 120 teeth including negative control (n = 10), positive control (n = 10), and experimental groups (n = 100). One hundred teeth were randomly divided into 5 groups of 20 teeth each and obturated with System B (Sb), Lateral Compaction (Lc), Thermafil (T), Single ProTaper Gutta-percha (P), and laterally compacted ProTaper Gutta-percha (PLc). Enterococcus faecalis was used for determination of the bacterial penetration. Evaluation was carried out for 60 days.
At 30 days, the chi2 test showed that the slowest penetration was observed in Group Sb and Group PLc, which were not significantly different from each other. The fastest penetration in the all experimental groups was observed in Group T and Group P, which were not significantly different from one another. Also, there was no statistically significance difference (P > .05) among all groups at 60 days.
It may be concluded that under the conditions of this study System B and laterally compacted ProTaper Gutta-percha prevent bacterial penetration of the root canal at 30 days. Furthermore, there was no difference among obturation techniques at 60 days.
本研究的目的是比较5种不同技术进行根管充填后的细菌侵入情况。
本研究对120颗牙齿进行，包括阴性对照组（n = 10）、阳性对照组（n = 10）和实验组（n = 100）。将100颗牙齿随机分为5组，每组20颗，分别用System B（Sb）、侧向加压法（Lc）、Thermafil（T）、单尖ProTaper牙胶尖（P）和侧向加压ProTaper牙胶尖（PLc）进行根管充填。采用粪肠球菌来测定细菌侵入情况。评估持续60天。
在30天时，卡方检验显示，Sb组和PLc组的细菌侵入最慢，且两组之间无显著差异。在所有实验组中，T组和P组的细菌侵入最快，且两组之间无显著差异。此外，在60天时，所有组之间无统计学显著差异（P > .05）。
可以得出结论，在本研究条件下，System B和侧向加压ProTaper牙胶尖在30天时可防止细菌侵入根管。此外，在60天时，各充填技术之间无差异。
