근관치료시 사용되는 수종 임시충전재의 변연 폐쇄효과에 관한 연구

A STUDY ON THE SEALING PROPERTIES OF TEMPORARY FILLING MATERIALS USED IN ENDODONTICS

  • 유현미 (서울대학교 치과대학 치과보존학교실) ;
  • 권혁춘 (서울대학교 치과대학 치과보존학교실)
  • Yoo, Hyun-Mee (Department of Conservative Dentistry, College of Dentistry, Seoul National University) ;
  • Kwon, Hyuk-Choon (Department of Conservative Dentistry, College of Dentistry, Seoul National University)
  • 발행 : 1991.10.31

초록

The purpose of this study was to evaluate the sealing properties of the temporary filling materials used in endodontic treatment Access cavities were prepared in 135 extracted human molar teeth. Then, cotton pellets were placed in the pulp chamber until the depth of 5 mm for the temporary filling materials; Caviton, zine oxide-eugenol, double sealing (A) (stopping 15 mm + zinc oxide - eugenol, 3.5mm ) double sealing (B) (stopping 3.0 mm + zinc oxide - eugenol 2.0 mm) and gutta percha stopping. After filling the materials, the teeth were immersed in 1 % methylene blue solutions for 3 days, 1 week and 2 weeks. Then thermal cycling was performed at the temperature of $60^{\circ}C$ and $4^{\circ}C$, followed by longitudinal sections on the center of tooth. Finally, staining on the cotton pellet was evaluated. The following results were obtained. 1. Stopping showed lower marginal sealing quality than Caviton, zinc oxide - eugenol and double sealing. 2. In 1 week group, Caviton showed higher marginal sealing quality than zinc oxide-eugenol, double sealing and stopping. 3. Caviton and double sealing (B) showed a great decrease in marginal sealing quality with the increse of time. 4. Caviton had high marginal sealing quality in 3 day group and 1 week group, but in 2 week group, Caviton showed a great decrease. 5. Double sealing (B) showed fairly high marginal sealing quality in 3 day group, but decreased greatly after 1 week on.

키워드

과제정보

연구 과제 주관 기관 : 서울대학교병원