Micro-CT Evaluation of Root Canal Transportation and Centering Ability in Mesial Canals of Mandibular First Molars Ability in Mesial Canals of Mandibular First Molars
JOURNAL OF DENTISTRY INDONESIA, cilt.33, sa.1, 2026 (ESCI)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 33 Sayı: 1
- Basım Tarihi: 2026
- Doi Numarası: 10.14693/jdi.v33i1.1945
- Dergi Adı: JOURNAL OF DENTISTRY INDONESIA
- Derginin Tarandığı İndeksler: Emerging Sources Citation Index (ESCI)
- Ankara Üniversitesi Adresli: Evet
Özet
Background: This study aimed to evaluate canal transportation, centering ability, structure model index (SMI), surface area, and root canal volume changes in the mesial canals of mandibular first molars using micro-CT. Methods: Twenty-four mandibular first molars with two separate mesial canals and moderate curvature were included. Teeth were scanned using micro-CT before instrumentation and randomly divided into three groups (N = 8). Root canals were prepared using OneShape, OneCurve, and Rotate file systems, followed by post-instrumentation micro-CT scanning (10 & micro;m/pixel resolution). Changes in canal volume, surface area, transportation, centering ability, and SMI were analyzed at the apical, middle, and coronal thirds. Data were statistically evaluated (p < 0.05). Results: Canal transportation was significantly greater in the middle third compared to the apical and coronal regions. OneCurve (0.06 +/- 0.02) and OneShape (0.09 +/- 0.05) systems showed significantly higher transportation than the Rotate system (p < 0.05). No significant differences were observed among the groups in centering ability (p > 0.05), although the Rotate system demonstrated better centering ability. Additionally, the OneShape system resulted in greater increases in canal volume and SMI. Conclusions: While OneShape and OneCurve systems exhibited similar transportation, the Rotate system provided more favorable shaping outcomes. OneShape caused greater dentin removal and morphological changes.