Restorative Dentistry and Endodontics
- Volume 15 Issue 2
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- Pages.46-57
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- 1990
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- 2234-7658(pISSN)
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- 2234-7666(eISSN)
SPECTROPHOTOMETRIC ANALYSIS ON THE SEALING EFFECT OF ULTRASONIC OBTURATION OF THE ROOT CANAL
초음파(超音波) 근관충진법(根管充眞法)의 폐쇄효과(閉鎖效果)에 관(關)한 분광광도계(分光光度界) 측정(測定)
- Kim, Yang-Lag (Department of Dentistry Graduate School, Kyungpook National University)
- 김양락 (경북대학교 대학원 치의학과 보존학)
- Published : 1990.10.25
Abstract
The purpose of this study was to spectrophotometrically investigate the sealing effect of the ultrasonic canal obturation with softened gutta-percha utilizing an endosonic plugger by means of ultrasonic vibrations and heat. The 120 extracted human central and lateral incisors with single root were randomly selected, and the root canals were instrumented up to size #60 file by conventional method. The prepared canals were obtruated with gutta-percha by lateral condensation method, McSpadden technique and ultrasonic condensation method, with or without sealer. All specimens were immersed in 2% methylene blue in an incubator at
초음파진동과 열을 이용하는 초음파 금관충전법의 근관페쇄효과를 연구하기 위하여 색소회복법(dye recovery method)에 기초한 분광광도계 측정법으로 근단공 누출정도를 정량적으로 측정하였다. 발거된 상하악 중절치 및 측절치에서 치관을 절제한 120개의 치근에 재래식 방법으로 근관형성을 하고 측방가압법, McSpadden 근관충전법 및 초음파 근관충전법으로 근관을 충전한 후
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