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EDTA가 상아질의 경도 변화에 미치는 영향에 관한 실험적 연구 / (An) experimental study of the effect of the EDTA on human dentin hardness

Authors
 이상기 
Issue Date
1990
Description
치의학과/석사
Abstract
[한글]

저자는 EDTA가 상아질의 경도변화에 미치는 영향을 관찰하고자 발거된 전치 30개를 각기 10개씩 3군으로 나누어, EDTA처리전과 치근 상아질 표면에 5분, 15분, 30분간 처리한후의 상아질 정도를 실험 측정한 결과 다음과 같은 결론을 얻었다.

1. 상아질의 KHN는 5분군의 경우 50.8에서 40.0으로 21.3%, 15분군의 경우 48.4에서 27.0으로 44.2%, 30분군의 경우 48.0에서 23.1로 51.9%가 감소하였다.

2. 상아질 KHN의 1분당 감소율은 5분군의 경우 4.3, 15분군의 경우 2.9, 30분군의 경우 1.7이었다.

3. 5분군과 15분군은 시간이 경과함에 따라 상아질의 KHN가 뚜렷이 감소하였으나, 30분군은 15분군과 별 차이가 없는 것으로 나타났으며 3군간에는 통계학적 유의차가 있었다(P<0.05).

[영문]

The primary purpose of this study was to assess the effect of the EDTA on human dentin hardness of root.

The 30 extracted human anterior teeth were divided into three groups, and EDTA was applied on the each tooth root dentin surface for 5, 15 and 30 minutes to evaluate the dentin hardness.

The following results were obtained:

1. The KHN of dentin was decreased by 21.3% from 50.8 to 40.0 in 5 min. group, 44.2% from 48.4 to 27.0 in 15 min. group, and 51.9% from 48.0 to 23.1 in 30 min group.

2. The decrease rate per 1 min of KHN of dentin was 4.3 in 5 min. group, 2.9 in 15 min. group, and 1.7 in 30 min, group.

3. As time passed, the KHN of dentin of 5 min group and 15 min. group were significantly decreased, but the KHN of dentin of 30 min. was not significantly decreased compared with 15 min. group.

There was a statistical significance in the decrease rate of KHN of dentin among 3 groups(P<0.05).
Full Text
https://ymlib.yonsei.ac.kr/catalog/search/book-detail/?cid=CAT000000003335
Files in This Item:
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Appears in Collections:
2. College of Dentistry (치과대학) > Dept. of Advanced General Dentistry (통합치의학과) > 2. Thesis
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/117985
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