Differences on the Root and Root Canal Morphologies between Asian and White Ethnic Groups Analyzed by Cone-beam Computed Tomography

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 configurations on Asian and white subpopulations using cone-beam computed tomographic imaging. Information fr...

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Veröffentlicht in:	Journal of endodontics Jg. 44; H. 7; S. 1096
Hauptverfasser:	Martins, Jorge N R, Gu, Yongchun, Marques, Duarte, Francisco, Helena, Caramês, João
Format:	Journal Article
Sprache:	Englisch
Veröffentlicht:	United States 01.07.2018
Schlagworte:	Adult Asian Continental Ancestry Group Bicuspid - anatomy & histology Bicuspid - diagnostic imaging Cone-Beam Computed Tomography Cuspid - anatomy & histology Cuspid - diagnostic imaging Dental Pulp Cavity - anatomy & histology Dental Pulp Cavity - diagnostic imaging European Continental Ancestry Group Female Humans Incisor - anatomy & histology Incisor - diagnostic imaging Male Middle Aged Molar - anatomy & histology Molar - diagnostic imaging Radiography, Dental Tooth Root - anatomy & histology Tooth Root - diagnostic imaging cone-beam computed tomography prevalence ethnic morphology Anatomy root canal
ISSN:	1878-3554, 1878-3554
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Abstract	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 configurations on Asian and white subpopulations using cone-beam computed tomographic imaging. Information from Asian and white patients was retrieved from 2 cone-beam computed tomographic imaging databases in China and Western Europe. Two calibrated observers 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 considered at a P value < .05. Reliability tests were performed between observers. 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. Moreover, 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 situation was found in maxillary second molars. 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.
AbstractList	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 configurations on Asian and white subpopulations using cone-beam computed tomographic imaging. Information from Asian and white patients was retrieved from 2 cone-beam computed tomographic imaging databases in China and Western Europe. Two calibrated observers 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 considered at a P value < .05. Reliability tests were performed between observers. 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. Moreover, 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 situation was found in maxillary second molars. 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. 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 configurations on Asian and white subpopulations using cone-beam computed tomographic imaging.INTRODUCTIONPopulations 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 configurations on Asian and white subpopulations using cone-beam computed tomographic imaging.Information from Asian and white patients was retrieved from 2 cone-beam computed tomographic imaging databases in China and Western Europe. Two calibrated observers 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 considered at a P value < .05. Reliability tests were performed between observers.METHODSInformation from Asian and white patients was retrieved from 2 cone-beam computed tomographic imaging databases in China and Western Europe. Two calibrated observers 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 considered at a P value < .05. Reliability tests were performed between observers.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. Moreover, 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 situation was found in maxillary second molars.RESULTSDifferences 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. Moreover, 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 situation was found in maxillary second molars.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.CONCLUSIONSThe 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.
Author	Caramês, João Gu, Yongchun Marques, Duarte Francisco, Helena Martins, Jorge N R
Author_xml	– sequence: 1 givenname: Jorge N R surname: Martins fullname: Martins, Jorge N R email: jnr_martins@yahoo.com.br organization: Endodontics Department, Faculdade de Medicina Dentária, Universidade de Lisboa, Instituto de Implantologia, Lisboa, Portugal. Electronic address: jnr_martins@yahoo.com.br – sequence: 2 givenname: Yongchun surname: Gu fullname: Gu, Yongchun organization: Department of Dentistry and Central Lab, The Ninth People's Hospital of Suzhou, Nantong University, Nantong, China – sequence: 3 givenname: Duarte surname: Marques fullname: Marques, Duarte organization: Anatomy and Physiology Department, Faculdade de Medicina Dentária, Universidade de Lisboa, LIBPhys-FCT UID/FIS/04559/2013, Lisboa, Instituto de Implantologia, Lisboa, Portugal – sequence: 4 givenname: Helena surname: Francisco fullname: Francisco, Helena organization: Oral Surgery Department, Faculdade de Medicina Dentária, Universidade de Lisboa, LIBPhys-FCT UID/FIS/04559/2013, Lisboa, Instituto de Implantologia, Lisboa, Portugal – sequence: 5 givenname: João surname: Caramês fullname: Caramês, João organization: Oral Surgery Department, Faculdade de Medicina Dentária, Universidade de Lisboa, LIBPhys-FCT UID/FIS/04559/2013, Lisboa, Instituto de Implantologia, Lisboa, Portugal
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SubjectTerms	Adult Asian Continental Ancestry Group Bicuspid - anatomy & histology Bicuspid - diagnostic imaging Cone-Beam Computed Tomography Cuspid - anatomy & histology Cuspid - diagnostic imaging Dental Pulp Cavity - anatomy & histology Dental Pulp Cavity - diagnostic imaging European Continental Ancestry Group Female Humans Incisor - anatomy & histology Incisor - diagnostic imaging Male Middle Aged Molar - anatomy & histology Molar - diagnostic imaging Radiography, Dental Tooth Root - anatomy & histology Tooth Root - diagnostic imaging
Title	Differences on the Root and Root Canal Morphologies between Asian and White Ethnic Groups Analyzed by Cone-beam Computed Tomography
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