J Korean Acad Conserv Dent.  2008 Nov;33(6):518-525. 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 HW
• Kim SM
• Hwang HK

• KMID: 1428462
• DOI: http://doi.org/10.5395/JKACD.2008.33.6.518

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 (x 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.

Keyword

Depth of the System B Plugger tip; Type IV canal; Obturation; Continuous Wave of Condensation technique

MeSH Terms

Dental Pulp Cavity
Glass
Gutta-Percha
Nickel
Titanium
Gutta-Percha
Nickel
Titanium

Figure

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  Figure 1 Fabrication of Type IV canal A. Original canal, B. Enlarged Canal, C. Legde fabrication, D. Type IV canal

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  Figure 2 Main canal and lingual canal of Type IV canal

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  Figure 3 Distribution of gutta-percha, sealer and void in lingual canal

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