Restorative Dentistry and Endodontics
- Volume 24 Issue 1
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- Pages.222-232
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- 1999
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- 2234-7658(pISSN)
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- 2234-7666(eISSN)
INFLUENCE OF HEATED SPREADER ON THE SEALING ABILITY OF LATERAL CONDENSATION
측방가압충전시 Heated Spreader 사용유무가 근관밀폐에 미치는 영향
- Chung, Won-Gyun (Dept. of Conservative Dentistry Graduate School, Dankook University) ;
- Hong, Chan-Ui (Dept. of Conservative Dentistry Graduate School, Dankook University)
- Published : 1999.04.06
Abstract
The purpose of this study was to evaluate the effect of heated spreader on the sealing ability of lateral condensation, compared with regular cold spreader. Forty two extracted human teeth with single canal were randomly placed into 3 experimental groups, and four additional teeth were used as positive and negative controls. Each group was prepared with Ni-Ti Profile #40 using step-down technique and obturated with standardized colored gutta-percha cone by standard(cold) lateral condensation technique, warm lateral condensation technique with Endotec and hot spreader soaked in glass bead sterilizer, each with Sealapex sealer. Control groups were not obturated, but prepared. After 2 days in 2% methylene blue, the teeth were invested and made into transparent resin blocks. And then, each block was sectioned horizontally with microtome at 1, 2, 3, 4, 5 mm levels from the apex. The linear extent of dye penetration was examined with stereomicroscope at
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