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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2017.1
- 수록면
- 273 - 281 (9page)
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초록· 키워드
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Objectives: The aims of this study were to quantify tug-back by measuring the pulling force and investigate the correlation of clinical tug-back pulling force with in vitro gutta-percha (GP) cone adaptation score using micro-computed tomography (μCT).
Materials and Methods: Twenty-eight roots from human single-rooted teeth were divided into 2 groups. In the ProTaper Next (PTN) group, root canals were prepared with PTN, and in the ProFile (PF) group, root canals were prepared using PF (n = 14). The degree of tug-back was scored after selecting taper-matched GP cones. A novel method using a spring balance was designed to quantify the tug-back by measuring the pulling force. The correlation between tug-back scores, pulling force, and percentage of the gutta-percha occupied area (pGPOA) within apical 3 mm was investigated using μCT. The data were analyzed using Pearson's correlation analysis, one-way analysis of variance (ANOVA) and Tukey's test.
Results: Specimens with a strong tug-back had a mean pulling force of 1.24 N (range, 0.15–1.70 N). This study showed a positive correlation between tug-back score, pulling force, and pGPOA. However, there was no significant difference in these factors between the PTN and PF groups. Regardless of the groups, pGPOA and pulling force were significantly higher in the specimens with a higher tug-back score (p < 0.05).
Conclusions: The degree of subjective tug-back was a definitive determinant for master cone adaptation in the root canal. The use of the tug-back scoring system and pulling force allows the interpretation of subjective tug-back in a more objective and quantitative manner.
목차
등록된 정보가 없습니다.
참고문헌 (25)
참고문헌 신청
Allison DA / 1981 / The influence of master cone adaptation on the quality of the apical seal / J Endod 7 : 61 ~ 65
Altman DG / 1991 / Practical statistics for medical research / Chapman & Hall : 396 ~ 403
Chesler MB / 2013 / Intramanufacturer diameter and taper variability of rotary instruments and their corresponding gutta-percha cones / J Endod 39 : 538 ~ 541
Cunningham KP / 2006 / Variability of the diameter and taper of size #30, 0.04 gutta-percha cones / J Endod 32 : 1081 ~ 1084
Eleazer P / 2012 / Glossary of endodontic terms / American Association of Endodontists
Altman DG / 1991 / Practical statistics for medical research / Chapman & Hall : 396 ~ 403
Chesler MB / 2013 / Intramanufacturer diameter and taper variability of rotary instruments and their corresponding gutta-percha cones / J Endod 39 : 538 ~ 541
Cunningham KP / 2006 / Variability of the diameter and taper of size #30, 0.04 gutta-percha cones / J Endod 32 : 1081 ~ 1084
Eleazer P / 2012 / Glossary of endodontic terms / American Association of Endodontists
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