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http://dx.doi.org/10.5395/JKACD.2008.33.6.518

THE EFFECT OF CANAL OBTURATION ACCORDING TO THE DEPTH OF THE SYSTEM B PLUGGER TIP IN THE TYPE IV CANAL  

Choi, Hee-Won (Department of Conservative Dentistry, College of Dentistry, Chosun University)
Kim, Soo-Mee (Department of Dentistry, College of Medicine, Seonam University)
Hwang, Ho-Keel (Department of Conservative Dentistry, College of Dentistry, Chosun University)
Publication Information
Restorative Dentistry and Endodontics / v.33, no.6, 2008 , pp. 518-525 More about this Journal
Abstract
The purpose of this study was to evaluate the effect of the apical sealing according to the depth of the System B Plugger tip when root canal was filled with gutta-percha and sealer by Continuous Wave of Condensation technique in the Type IV canal. 50 simulated resin blocks with J-shaped curvature canals were instrumented by ProTaper (Dentsply Maillefer, Ballagiues, Switzerland) Ni-Ti files using the crown-down technique. Type IV canals were made using a broken ProTaper F3 Ni-Ti file for making a ledge at 3mm short from the working length. And ProTaper F1 Ni-Ti file was used for perforating resin block. The prepared Type IV canals were randomly divided into three experimental groups of 15 each according to the depth of System B Plugger tip. All of experimental groups were obturated with Continuous Wave of Condensation technique. The length of gutta-percha and sealer in lingual of the Type IV canals was measured with a measuring digital calliper under magnifying glass (${\times}2.3$). The results are as follows : 1. In control group, there was no gutta-percha and sealer in lingual canal. 2. 3 mm group showed relatively more gutta-percha than 5mm or 7 mm group (p<0.05). 3. 7 mm group did not showed gutta-percha and relatively more void were observed than 3mm or 5 mm group. (p<0.05) In conclusion, within the limits of the results of this experiment, the 3 mm depth of System B Plugger tip was acceptable for obturating the Type IV canal.
Keywords
Depth of the System B Plugger tip; Type IV canal; Obturation; Continuous Wave of Condensation technique;
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