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

Hee-Won Choi; Soo-Mee Kim; Ho-Keel Hwang

doi:10.5395/JKACD.2008.33.6.518

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Choi, Kim, and Hwang: The Effect of canal obturation according to the depth of the System B Plugger tip in the Type IV canal

Original Article

Journal of Korean Academy of Conservative Dentistry

Journal of Korean Academy of Conservative Dentistry 2008; 33(6): 518-525.

Published online: 30 November 2008

DOI: https://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

Hee-Won Choi¹, Soo-Mee Kim², Ho-Keel Hwang¹

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 8 August 2008 Revised 1 September 2008 Accepted 4 September 2008

(open-access):

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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

Figures and Tables

Figure 1

Fabrication of Type IV canal

A. Original canal, B. Enlarged Canal, C. Legde fabrication, D. Type IV canal

Figure 2

Main canal and lingual canal of Type IV canal

Figure 3

Distribution of gutta-percha, sealer and void in lingual canal

Table 1

Group classification according to depth of System B Plugger tip from the root apex

Table 2

Mean ± SD (mm) of GP cone + Sealer length in each group

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