| Autor: |
Yi-Chin Chen, Chia-Lun Tsai, Yi-Chen Chen, Gin Chen, Shue-Fen Yang |
| Jazyk: |
angličtina |
| Rok vydání: |
2018 |
| Předmět: |
|
| Zdroj: |
Journal of the Formosan Medical Association, Vol 117, Iss 12, Pp 1086-1092 (2018) |
| Druh dokumentu: |
article |
| ISSN: |
0929-6646 |
| DOI: |
10.1016/j.jfma.2017.12.001 |
| Popis: |
Background/Purpose: The purpose of this study is to investigate the prevalence and the morphologic characteristics of the radicular groove and root canal system in human mandibular second premolars with C-shaped root in a Taiwan Chinese subpopulation using cone-beam computed tomographic (CBCT) imaging. Methods: CBCT images of 580 mandibular second premolars were collected from 317 patients. All of the mandibular second premolars were examined in serial axial sections to identify the presence of any C-shaped root and C-shaped canal systems. The morphologic characteristics of mandibular second premolars with C-shaped roots were studied by performing measurements of serial axial sections. Results: The prevalence rate of mandibular second premolars with a C-shaped root was 3.45% (20/580 teeth) and the rate of those with a C-shaped canal system was 2.24% (13/580 teeth). It was found that 69% of the radicular grooves were located on the lingual half of the root (9/13 teeth) in mandibular second premolars with a C-shaped canal system. In those teeth with a lingual radicular groove, the main canal was toward the buccal side. Frequently, the first C-shaped canal image was found at the mid-root level. The deepest part of the radicular groove was located at about 2.5 mm apical to the first C-shaped canal image. Conclusion: There was a 2–3% morphologic variation of the mandibular second premolar with a C-shaped root canal system among the Taiwan Chinese subpopulation investigated in this study. Detailed knowledge of the morphological characteristics of teeth may be valuable when choosing clinical treatments. Keywords: Cone-beam CT, Mandibular second premolar, C-shaped canal system, Reversed C-shaped canal system, Radicular groove |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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