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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2020.1
- 수록면
- 1 - 9 (9page)
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초록· 키워드
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Objectives: This study was performed to assess the anatomy of mandibular first molars. Materials and Methods: In this in vivo study, cone-beam computed tomography (CBCT) volumes of 312 bilateral intact first mandibular molars from 156 patients (79 men and 77 women; average age, 35.6 ± 11.2 years) were investigated in terms of the direction of each canal's curvature in the buccolingual and mesiodistal dimensions (direction of the position of the apex in relation to the longitudinal axis of the root), the presence of an isthmus (a narrow, ribbon-shaped communication between 2 root canals) in 3 segments (0–2, 2–4, and 4–6 mm) from the apex), and the presence and number of accessory canals (smaller canals besides the main root canals, connecting the pulp to the periodontium). Data were analyzed statistically (α = 0.05). Results: Mesiolingual canals were mostly buccally and distally inclined, while mesiobuccal and distolingual canals were mostly distally curved. Isthmuses were more common in younger patients (χ2 test, p < 0.05). The average numbers of accessory canals in the apical, middle, and coronal segments were 9.9 ± 4.2, 6.9 ± 2.9, and 9.3 ± 3.0 canals per segment, respectively (analysis of variance, p < 0.001). Age and sex were not associated with the number of accessory canals (p > 0.05). Conclusions: The complex anatomy of these teeth deserves attention during non-surgical or surgical endodontic treatment. Around the apex, isthmuses might be more prevalent in younger and female individuals.
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참고문헌 (31)
참고문헌 신청
Akhlaghi NM / 2016 / Radicular anatomy of permanent mandibular second molars in an Iranian population: a preliminary study / Dent Res J (Isfahan) 13:362~366
Mohammadzadeh Akhlaghi N / 2017 / Root canal anatomy and morphology of mandibular first molars in a selected Iranian population : an in vitro study / Iran Endod J 12:87~91
Madani ZS / 2017 / Root and canal morphology of mandibular molars in a selected Iranian population using cone-beam computed tomography / Iran Endod J 12:143~148
Mehrvarzfar P / 2014 / Evaluation of isthmus prevalence, location, and types in mesial roots of mandibular molars in the Iranian population / Dent Res J(Isfahan) 11:251~256
Weller RN / 1995 / Incidence and position of the canal isthmus. Part 1. Mesiobuccal root of the maxillary first molar / J Endod 21:380~383
Mohammadzadeh Akhlaghi N / 2017 / Root canal anatomy and morphology of mandibular first molars in a selected Iranian population : an in vitro study / Iran Endod J 12:87~91
Madani ZS / 2017 / Root and canal morphology of mandibular molars in a selected Iranian population using cone-beam computed tomography / Iran Endod J 12:143~148
Mehrvarzfar P / 2014 / Evaluation of isthmus prevalence, location, and types in mesial roots of mandibular molars in the Iranian population / Dent Res J(Isfahan) 11:251~256
Weller RN / 1995 / Incidence and position of the canal isthmus. Part 1. Mesiobuccal root of the maxillary first molar / J Endod 21:380~383
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