상악대구치 근심협측치근의 근관계에 관한 연구

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This study compared the canal systems of the mesio-buccal roots of the maxillary molars by different dentists. Seventy-three maxillary molars were selected after taking radiographs of the mesio-distal and bucco-lingual views using intra=oral dental standard films. After openong the pulp chamber for access, it was placed in 5% NaOCI for 48 hours to dissolve the pulp tissue. Indian ink(Winsor and Newton : Black Indian Ink #951, England)was then injected into the pulp cavity to stain the pulp tissue using a vacuu, system. It was cleared in methyl salicylate after dicalcification with 5% nitric acid for 48 hours and dehydrating in ascending concentrations of alcohol(80, 90, 100%). Four inspectors (three dentists, One endodontist) evaluated the root canal types at magnification of x10, x20 using a stereomicroscope(SZ-pt,Olympus, Japan)according to Weine's classification and the data was analyzed statistically.
The results are as follow:
1. Of the mesio-buccal roof canal tupes of the maxillary molars classified by three dentists, the frequency of type Ⅲ(34.25%) was hugher than that of types Ⅰ(20.55%), Ⅱ(23.74%), and Ⅳ(21.46%)(p<0.05).
2. Of the mesio-buccal roof canal types of the maxillary molars classified by an endodontis. the frefquency of thpe Ⅱ(42. 47%)and Ⅲ(41.9%) was higher than that of types Ⅰ(6.85) and Ⅳ(9.59)(p<0.05).
3. A comparison of the coincidence among the three dentist all of them agreed approximately 41.10%, two of them agreed approximately 45.21% and all of them disagreed approximately 13.70% of the time.
4. In comparison of the coincidence between one of the three dentists and the endodiontist, there was 67.12% agreement by dentist A, 43.84% agreement by dentist B, and 75.34% agreement by dentist C. Inaddition, there were statistically significant differences in the roof canal types between the three dentists and the endodontist(p<0.05).
In conclusion. among the equally trained dentists and an endodontist. the mesio-buccal roots of the maxillary molars are more difficult to interpret than the other roots. Considering the difficulty in estimationg the mesio-buccal roof canal tupes of the maxillary molars, further study on the criteria and analyzing method will be needed to classify the root canal types.
Alternative Title
A study on the root canal system of the mesio-buccal root of the maxillary molar
Alternative Author(s)
Son, Wook-Hee
조선대학교 대학원
일반대학원 치의학과
Awarded Date
Table Of Contents
Ⅰ. 서론 = 1
Ⅱ. 실험재료 및 방법 = 3
Ⅲ. 실험성적 = 6
Ⅳ. 총괄 및 고안 = 9
Ⅴ. 결론 = 15
참고 문헌 = 17
조선대학교 대학원
선윽희. (2004). 상악대구치 근심협측치근의 근관계에 관한 연구.
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General Graduate School > 3. Theses(Master)
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