• Title/Summary/Keyword: Depth of the System B Plugger tip

Search Result 1, Processing Time 0.015 seconds

THE EFFECT OF CANAL OBTURATION ACCORDING TO THE DEPTH OF THE SYSTEM B PLUGGER TIP IN THE TYPE IV CANAL (제 IV 형 근관에서 System B Plugger tip의 깊이에 따른 근관 충전 효과)

  • Choi, Hee-Won;Kim, Soo-Mee;Hwang, Ho-Keel
    • Restorative Dentistry and Endodontics
    • /
    • v.33 no.6
    • /
    • pp.518-525
    • /
    • 2008
  • 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.