초음파 다이아몬드 기구로 형성된 치근단 역충전 와동의 정화도 및 와벽형태
CLEANLINESS AND WALL MORPHOLOGY OF ROOT-END RETROGRADE CAVITY MADE BY ULTRASONIC DIAMOND INSTRUMENTS
권오원, 성기홍, 권오원,
소속 상세정보
권오원 ( ) - 경북대학교 치과대학 보존학교실
성기홍 ( ) - 경북대학교 치과대학 보존학교실
권오원 ( ) - 경북대학교 치과대학 보존학교실
KMID : 0362319980230010515
Abstract
The purposes of this study were to observe the cavity wall morphology and to evaluate the degree of cavity cleanliness when root-end retrograde cavity preparation was done with ultrasonic diamond instruments.
To observe the morphology of retrocavity and to evaluate the degree of cavity cleanliness, root-end resections were done on 20 palatal roots of extracted maxillary first molars after canal filling with gutta-percha. Retrocavities were prepared using either ultrasonic diamond instruments or stainless steel ones of medium power setting of level 6 (Miniendo^(TM), EIE, CA, U.S.A.). Morphology of the cavity, degrees of the remaining canal debris and smear layer were evaluated under the scanning electron microscope.
The results were as follows :
Cavities prepared with ultrasonic diamond instruments showed scratched appearance of wall, while ultrasonic stainless steel preparation showed hatcheted appearance.
Ultrasonic diamond instruments induced more smear layer than stainless steel ones did (p<0.01) in the cavity. However, there was no significant difference in canal debris (p>0.05).
키워드
원문 및 링크아웃 정보
등재저널 정보