Gencoglu N, Yildirim T, Garip Y, Karagenc B, Yilmaz H
Department of Endodontics, Faculty of Dentistry, Marmara University, Istanbul.
Int Endod J. 2008 Oct;41(10):836-42. doi: 10.1111/j.1365-2591.2008.01434.x.
To determine the quality of root fillings in teeth with artificial internal resorptive cavities filled with Thermafil, JS Quick-Fill, Soft Core, System B and Microseal, and by cold lateral compaction (LC) technique.
Sixty maxillary incisor teeth were selected. After access cavity preparation and root canal instrumentation, the roots were sectioned horizontally and artificial internal resorption cavities were prepared on the canal walls. The tooth sections were cemented together and the root canals were filled using one of six different techniques: Thermafil, JS Quick-Fill, Soft Core, System B and Microseal, and by LC. The roots were then divided at the level of the previous section and each root surface was photographed. Image analysis program was used to calculate the percentage of sealer, gutta-percha and void in the internal resorptive cavities. All measurements were analysed statistically using One-way ANOVA and Newman-Keuls tests.
The Microseal technique filled 99% of the artificial resorptive area followed by LC (92%), SystemB (89%), Quick-Fill (88%), Thermafil (74%) and Soft-Core (73%). Warm gutta-percha compaction techniques filled the resorption areas with more gutta-percha than sealer (Microseal 68%, System B 62%) compared to the other techniques (LC 48%, Quick Fill 41%, Soft Core 34%, Thermafil 35%). In addition, core techniques left a considerable volume of voids in the resorptive areas (Quick-Fill 12%, Thermafil 26%, Soft Core 27%).
Warm gutta techniques filled artificial resorption cavities significantly better than the other gutta-percha techniques.
确定采用Thermafil、JS Quick - Fill、Soft Core、System B和Microseal以及冷侧方加压（LC）技术对有人造内吸收腔的牙齿进行根管充填的质量。
选取60颗上颌切牙。在开髓和根管预备后，将牙根水平切断，并在根管壁上制备人造内吸收腔。将牙齿断面粘结在一起，然后采用六种不同技术之一对根管进行充填：Thermafil、JS Quick - Fill、Soft Core、System B和Microseal，以及冷侧方加压技术。然后在先前断面水平将牙根分开，对每个牙根表面进行拍照。使用图像分析程序计算内吸收腔内封闭剂、牙胶和空隙的百分比。所有测量数据采用单因素方差分析和纽曼 - 基尔斯检验进行统计学分析。
Microseal技术充填了99%的人造吸收区，其次是冷侧方加压技术（92%）、SystemB（89%）、Quick - Fill（88%）、Thermafil（74%）和Soft - Core（73%）。与其他技术（冷侧方加压技术48%、Quick Fill 41%、Soft Core 34%、Thermafil 35%）相比，热牙胶加压技术充填吸收区时牙胶比封闭剂更多（Microseal 68%，System B 62%）。此外，成核技术在吸收区留下了相当大的空隙（Quick - Fill 12%，Thermafil 26%，Soft Core 27%）。
热牙胶技术在充填人造吸收腔方面明显优于其他牙胶技术。
