Proceedings of the KACD Conference (대한치과보존학회:학술대회논문집)
- 2003.11a
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- Pages.552-552
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- 2003
The effect of gutta-percha removal using nickel-titanium rotary instruments
- Jeon, Jeong-Hun (Department of Conservative Dentistry, College of Dentistry, Chosun University) ;
- Hwang, Ho-Keel (Department of Conservative Dentistry, College of Dentistry, Chosun University)
- Published : 2003.11.01
Abstract
The purpose of this study was to quantify the amount of remaining gutta-percha/sealer on the walls of root canals when three types of nickel-titanium rotary instruments and a hand instrument were used to remove these materials. Forty extracted mandibular premolars were prepared by step-back method and obturated with gutta-percha and sealer. Gutta-percha removal for group 1 was done using hand file with chloroform, group 2 using Profile and group 4 using K3. The following factors were evaluated : Time taken to reach working length, total time for gutta-percha removal and number of fractured instruments.(중략)
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