Restorative Dentistry and Endodontics

The Korean Academy of Conservative Dentistry (대한치과보존학회)
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ELECTROCHEMICAL STUDY ON THE SEALING EFFECT OF CALCIUM HYDROXIDE-BASED SEALERS

수종 수산화칼슘 Sealer의 근관폐쇄효과에 관한 전기화학적연구

  • Choi, Kook-Ryeol (Dept. of Conservative Dentistry, School of Dentistry, Dankook University) ;
  • Hong, Chan-Ui (Dept. of Conservative Dentistry, School of Dentistry, Dankook University) ;
  • Shin, Dong-Hoon (Dept. of Conservative Dentistry, School of Dentistry, Dankook University)
  • 최국렬 (단국대학교 치과대학 치과보존학교실) ;
  • 홍찬의 (단국대학교 치과대학 치과보존학교실) ;
  • 신동훈 (단국대학교 치과대학 치과보존학교실)
  • Published : 1995.03.10
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Abstract

The purpose of this electrochemical study was to determine and compare the sealing effect of three commonly used calcium hydroxide-based sealers (Sealapex, Apexit, and CRCS) with that of Roth 801 which is a ZOE-based sealer. 64 single rooted teeth were used in this experiment. After removing the crown, the teeth were devided into 4 groups of 15 in each and obturated with gutta-percha and experimental sealers. 4 teeth were as controls(2 positive and 2 negative). The results were as follows : 1. During the observation period, all sealers showed varying degree of microleakage. 2. The mean leakage currents according to the electrochemical study of each group showed $0.418{\pm}0.006mV$ for Roth 801, $2.03{\pm}0.035mV$ for Sealapex, $3.33{\pm}0.069mV$ for Apxit and $6.48{\pm}0.097mV$ for CRCS group. The positive control group showed 600mV. 3. There were statistically significant difference in mean leakage among experimental groups. ZOE-typed Roth 801 sealer was the lowest, and Sealapex, Apexit, CRCS group in that order showed increased leakage(P<0.05). 4. Roth 801, Sealapex and Apexit group showed increasing leakage with time, but CRCS group showed stable or decreasing leakage tendency.

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