Differences on the Root and Root Canal Morphologies between Asian and White Ethnic Groups Analyzed by Cone-beam Computed Tomography
| Main Authors: | Martins, Jorge N. R., Gu, Yongchun, Marques, Duarte, Francisco, Helena, Caramês, João |
|---|---|
| Format: | info publication-other Journal |
| Terbitan: |
, 2018
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| Online Access: |
https://zenodo.org/record/1312858 |
Daftar Isi:
- Introduction: Populations from different geographic regions and ethnic backgrounds may present differences in dental morphology. The aim of this study was to compare the differences in root and root canal configura- tions on Asian and white subpopulations using cone- beam computed tomographic imaging. Methods: Infor- mation from Asian and white patients was retrieved from 2 cone-beam computed tomographic imaging data- bases in China and Western Europe. Two calibrated ob- servers collected data regarding the number of roots and Vertucci root canal system configuration for all groups of teeth. A total of 15,655 teeth were analyzed. The z test for independent groups was used to analyze differences between the groups. The significance level was consid- ered at a P value < .05. Reliability tests were performed between observers. Results: Differences were noted in the number of roots per tooth in 6 groups of teeth. The Asian group showed a higher prevalence of single-root configurations in maxillary first premolars (83.2%) and mandibular second molars (45.4%) when compared with whites with 48.7% and 14.3%, respectively. More- over, 3-rooted configurations in mandibular first molars were more common in Asians (25.9%) compared with whites (2.6%). Seventeen of the 20 analyzed roots had a higher prevalence of Vertucci type I configuration in Asians. Maxillary first molars with second mesiobuccal root canals were more commonly found in whites than in Asians (71.3% and 58.4%, respectively). A similar sit- uation was found in maxillary second molars. Conclu- sions: The Asian ethnic group presented a higher prevalence of Vertucci type I configuration, whereas the white group displayed a higher number of multiple root canal system morphologies. A clinician should be aware of these differences when treating patients from these ethnic groups.