지원사업
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
- 2011.1
- 수록면
- 122 - 127 (6page)
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초록· 키워드
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Purpose: to investigate the discrepancies between the apical root canal diameter and initial apical file according to the shape of apical foramen.
Materials and Methods: Sixty extracted premolars were assigned to three groups according to the root canal system (type 1, 2, 3) of 20 teeth each. After chamber opening, the initial apical file (IAF) was inserted into root canal until the file tip was just visible through apical foramen under the microscope and fixed with methaacrylate in the root canal. The root tip was cut horizontally 1 mm from the anatomical apex and the apical cross-section was visualized using microscope (BX60MF, OLYMPUS OPTICAL Co., LTD. Japan) at ⨯50 magnification.
Result:1. Mean diameter of IAF was 0.36 mm in type 1, 0.34 mm in type 2, and 0.29 mm in type 3. There were no significant differences among groups.
2. The ratio between the area of apical root canal and IAF was 40.05% in type 1, 27.05% in type 2, and 34.63% in type 3. There was a significant difference between group 1 and 2 (p<0.05).
Conclusion: The IAF of premolar was more than size 30 regardless the root canal system, and it was much smaller than real apical canal size in view of the ratio between the area of apical root canal and IAF.
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참고문헌 (27)
참고문헌 신청
Card SJ / 2002 / The effectiveness of increased apical enlargement in reducing intracanal bacteria / J Endod 28:779~783
Chai WL / 2004 / Cross-sectional morphology and minimum canal wall widths in C-shaped roots of mandibular molars / J Endod 30:509~512
Contreras MA / 2001 / Comparison of the first file that fits at the apex, before and after early flaring / J Endod 27:113~116
Hecker H / 2010 / Determining the apical preparation size in premolars: part III / Oral Surg Oral Med Oral Pathol Oral Radiol Endod 110:118~124
황호길 / 2003 / Coronal flaring 전, 후 초기근관장 파일크기의 분석 / Restorative Dentistry and Endodontics 28(1):64~71
Chai WL / 2004 / Cross-sectional morphology and minimum canal wall widths in C-shaped roots of mandibular molars / J Endod 30:509~512
Contreras MA / 2001 / Comparison of the first file that fits at the apex, before and after early flaring / J Endod 27:113~116
Hecker H / 2010 / Determining the apical preparation size in premolars: part III / Oral Surg Oral Med Oral Pathol Oral Radiol Endod 110:118~124
황호길 / 2003 / Coronal flaring 전, 후 초기근관장 파일크기의 분석 / Restorative Dentistry and Endodontics 28(1):64~71
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