Monday, August 25, 2014

comparison of four gutta-percha filling techniques in simulated C-shaped canals

DOI: 10.1111/iej.12371

Abstract

Aim

To compare four gutta-percha filling techniques in simulated C-shaped canals based on filling quality at three cross-sectional levels, filling time and the apical extrusion of gutta-percha.

Methodology

Forty resin simulated C-shaped canals were constructed and filled using one of four techniques; cold lateral compaction (LC), ultrasonic compaction (UC), single cone with injectable gutta-percha (Obtura II) (IT) and core-carrier (Thermafil®) (CC). Cross-sections were made at 1 (L1), 3 (L3), and 6 (L6) mm from the canal terminus. Areas of gutta-percha, sealer and voids in each cross-section were measured using an image analysis system. Data were analysed using a univariate general linear model and post hoc test (Dunnett's T3). Data of obturation time was evaluated using the Bonferroni post-hoc test

Results

CC had more gutta-percha and less sealer compared to IT at L1 (P<0 .05="" at="" cc="" em="" gutta-percha="" had="" lc="" less="" level="" marginally="" significantly="" than="" this="">P
=0.049). At level 3 mm, significantly more gutta-percha and less sealer were present in IT compared to LC (P <0 .05="" and="" at="" both="" cc="" difference="" em="" for="" four="" in="" it="" l6.="" lc="" longer="" minutes="" no="" quality="" showed="" techniques="" than="" the="" three="" time="" times="" uc="" was="" whereas="">P <0 .001="" apical="" different="" extrusion="" finally="" four="" gutta-percha.="" in="" not="" occurrence="" of="" p="" techniques="" the="" were="">

Conclusion

The core-carrier technique was the most effective technique in the filling of this simulated C-shaped canal.

No comments: