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Streptococcus mutans를 이용한 근관 치료 후 포스트 와동 형성 전후의 치관부 누출에 관한 연구

Bacteriologic in vitro coronal leakage study of before and after post space preparation

김의성|이효안
대한치과보존학회 (Korean Academy Of Conservative Dentistry)|2005.01|Restorative Dentistry and Endodontics|제30권 제1호|pp. 16-21

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참고문헌

주제분류치의학

초록

본 실험에서는 근관 충전 후 Streptococcus mutans를 이용하여 포스트 와동 형성 전후의 근관부 미세 누출을 비교하였다.40개의 발치된 치아를 치근단의 길이가 14 mm가 되도록 치관부를 제거한 뒤, 06 taper Profile?? 로 MAF 크기가 #40이 되게 근관 확대를 시행하였다. 근관 확대 후 continuous wave technique으로 근관 충전을 시행하였다. 실험군은 다음과 같다.(가)1군은 양성 대조군으로 sealer 없이 근관 충전 하였다. (나)2군은 음성 대조군으로 sticky wax로 치근면을 완전히 막았다. (다)3군은 근관 충전한 후 전체 길이를 14 mm로 유지하였다. (라)4군은 근관 충전 후 거타퍼차를 5 mm 길이로 남겨두고 포스트 와동을 형성하였다. 치근을 플라스틱 튜브 안에 위치시켜 치근첨은 Andrade’s indicator가 첨가되어 있는 BHI 배지에 접촉되도록 하고 상부에서는 bacteria가 유입되도록 하였다. 실험군 (다)3에서는 평균 27.2일 만에 일어났으며 포스트 와동 형성한 (라)4군은 평균 15.7일만에 색변화가 일어났으며다. (다)3군과 (라)4군 사이에 통계학적으로 유의차를 나타내었다 (p=0.0007).

Abstract

The purpose of present study was to compare the speed of coronal leakage before and after post space preparation using Streptococcus Mutans. Forty straight extracted human teeth were selected. The crowns were removed to a uniform remaining root length 14mm. Canals were enlarged by 06 taper ProfilesⓇ to a size #40 as a master apical file. And these were filled with gutta percha point and TubulisealⓇ sealer, using continuous wave technique. Groupings are as follows. Group1- These teeth were obturated without sealer. Group2- These teeth were obturated and covered the surface of the root completely with sticky wax. Group3- These teeth were obturated. Group4- These teeth were obturated and prepared for post space remaining 5mm of gutta percha. The teeth were suspended in plastic tubes. The upper chamber received the bacterial suspension everyday to simulate clinical situation. The lower chamber consisted of BHI added Andrade's indicator. All roots in the positive control group(Group 1) turned yellow within 24 h and those of negative control group(Group 2) remained red throughout the experimental period (70 days). The samples of group3 were contaminated within an average of 27.2 days. The samples of group4 were contaminated within an average of 15.7 days, ranging from 9 to 22 days. There was significant difference between group3 and group4 statistically (p＜ 0.05).

참고문헌 (27)

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