The Effect of canal obturation according to the depth of the System B Plugger tip in the Type IV canal

Article information

Restor Dent Endod. 2008;33(6):518-525

Publication date (electronic) : 2008 November 30

doi : https://doi.org/10.5395/JKACD.2008.33.6.518

Hee-Won Choi ¹, Soo-Mee Kim ², Ho-Keel Hwang ¹

¹Department of Conservative Dentistry, College of Dentistry, Chosun University, Korea.

²Department of Dentistry, College of Medicine, Seonam University, Korea.

Corresponding Author: Ho-Keel Hwang. Department of Conservative Dentistry, College of Dentistry, Chosun University, 421 Seosuk-dong, Dong-gu, Gwangju, 501-825, Korea. Tel: 82-62-220-3840, Fax: 82-62-223-9064, rootcanal@hanmail.net

Received 2008 August 08; Revised 2008 September 01; Accepted 2008 September 04.

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 (× 2.3).

The results are as follows :

In control group, there was no gutta-percha and sealer in lingual canal.
3 mm group showed relatively more gutta-percha than 5mm or 7 mm group (p<0.05).
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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