Relationship of the Incidence of C-shaped Root Canal Configurations of Mandibular First Premolars with Distolingual Roots in Mandibular First Molars in a Taiwanese Population: A Cone-beam Computed Tomographic Study

Yu Chiao Wu, Yi Wen Cathy Tsai, Wan Chien Cheng, Pei Wei Weng, Chi Chun Su, Ho Sheng Chiang, Ming Pang Chung, Chi Hsiang Chung, Yi Shing Shieh, Ren Yeong Huang

Research output: Contribution to journalArticle

Abstract

Introduction: The aim of this study was to determine the prevalence of C-shaped canal configurations (CSs) and radicular grooves (RGs) in permanent mandibular first premolars (MPs) and to investigate the relevance of such complexities with the presence of distolingual roots (DLRs) in permanent mandibular first molars (MMs). Methods: A total of 800 pairs of MPs and MMs were investigated using a cone-beam computed tomographic system (NewTom 5G; QR srl, Verona, Italy). The frequency and symmetry of DLRs in MMs along with the occurrence of RGs and CSs in examined MPs were evaluated. Multivariable logistic regression analysis was applied to examine the correlation between the CSs of MPs with the appearance of DLRs in MMs. Results: In the examined teeth, 23.0% of MMs had a DLR, whereas 16.6% of MPs had RGs and 12.5% of MPs had C-shaped canals. Although the most common canal configuration in MPs is the single canal (74.1%), the other 25.9% still possess complicated root canals. Of these MPs that have different canal configurations, 54.6% had 2 canals, whereas 44.4% had CSs. Specifically, the CS showed a high prevalence of C3 morphologies at 98.9% followed by C1 at 1.1%. A corresponding and increasing frequency was noted in CSs and RGs of MPs and MMs with DLRs (P <.001). After adjusting for related categoric variables, the adjusted odds ratios for CSs of MPs in the bilateral DLR group compared with the non-DLR group was 3.294 (P <.001). Conclusions: This study showed an increased appearance of CSs in MPs when DLRs were present in MMs in the Taiwanese population.

Original languageEnglish
JournalJournal of Endodontics
DOIs
Publication statusAccepted/In press - Jan 1 2018

Fingerprint

Dental Pulp Cavity
Bicuspid
Incidence
Population
Italy
Tooth
Logistic Models
Odds Ratio
Regression Analysis

Keywords

  • C-shaped root canal configuration
  • Cone-beam computed tomography
  • distolingual root
  • mandibular first molar
  • mandibular first premolars

ASJC Scopus subject areas

  • Dentistry(all)

Cite this

Relationship of the Incidence of C-shaped Root Canal Configurations of Mandibular First Premolars with Distolingual Roots in Mandibular First Molars in a Taiwanese Population : A Cone-beam Computed Tomographic Study. / Wu, Yu Chiao; Cathy Tsai, Yi Wen; Cheng, Wan Chien; Weng, Pei Wei; Su, Chi Chun; Chiang, Ho Sheng; Chung, Ming Pang; Chung, Chi Hsiang; Shieh, Yi Shing; Huang, Ren Yeong.

In: Journal of Endodontics, 01.01.2018.

Research output: Contribution to journalArticle

Wu, Yu Chiao ; Cathy Tsai, Yi Wen ; Cheng, Wan Chien ; Weng, Pei Wei ; Su, Chi Chun ; Chiang, Ho Sheng ; Chung, Ming Pang ; Chung, Chi Hsiang ; Shieh, Yi Shing ; Huang, Ren Yeong. / Relationship of the Incidence of C-shaped Root Canal Configurations of Mandibular First Premolars with Distolingual Roots in Mandibular First Molars in a Taiwanese Population : A Cone-beam Computed Tomographic Study. In: Journal of Endodontics. 2018.
@article{8feabe0c9b8b458f95796cf121c5b334,
title = "Relationship of the Incidence of C-shaped Root Canal Configurations of Mandibular First Premolars with Distolingual Roots in Mandibular First Molars in a Taiwanese Population: A Cone-beam Computed Tomographic Study",
abstract = "Introduction: The aim of this study was to determine the prevalence of C-shaped canal configurations (CSs) and radicular grooves (RGs) in permanent mandibular first premolars (MPs) and to investigate the relevance of such complexities with the presence of distolingual roots (DLRs) in permanent mandibular first molars (MMs). Methods: A total of 800 pairs of MPs and MMs were investigated using a cone-beam computed tomographic system (NewTom 5G; QR srl, Verona, Italy). The frequency and symmetry of DLRs in MMs along with the occurrence of RGs and CSs in examined MPs were evaluated. Multivariable logistic regression analysis was applied to examine the correlation between the CSs of MPs with the appearance of DLRs in MMs. Results: In the examined teeth, 23.0{\%} of MMs had a DLR, whereas 16.6{\%} of MPs had RGs and 12.5{\%} of MPs had C-shaped canals. Although the most common canal configuration in MPs is the single canal (74.1{\%}), the other 25.9{\%} still possess complicated root canals. Of these MPs that have different canal configurations, 54.6{\%} had 2 canals, whereas 44.4{\%} had CSs. Specifically, the CS showed a high prevalence of C3 morphologies at 98.9{\%} followed by C1 at 1.1{\%}. A corresponding and increasing frequency was noted in CSs and RGs of MPs and MMs with DLRs (P <.001). After adjusting for related categoric variables, the adjusted odds ratios for CSs of MPs in the bilateral DLR group compared with the non-DLR group was 3.294 (P <.001). Conclusions: This study showed an increased appearance of CSs in MPs when DLRs were present in MMs in the Taiwanese population.",
keywords = "C-shaped root canal configuration, Cone-beam computed tomography, distolingual root, mandibular first molar, mandibular first premolars",
author = "Wu, {Yu Chiao} and {Cathy Tsai}, {Yi Wen} and Cheng, {Wan Chien} and Weng, {Pei Wei} and Su, {Chi Chun} and Chiang, {Ho Sheng} and Chung, {Ming Pang} and Chung, {Chi Hsiang} and Shieh, {Yi Shing} and Huang, {Ren Yeong}",
year = "2018",
month = "1",
day = "1",
doi = "10.1016/j.joen.2018.05.016",
language = "English",
journal = "Journal of Endodontics",
issn = "0099-2399",
publisher = "Elsevier Inc.",

}

TY - JOUR

T1 - Relationship of the Incidence of C-shaped Root Canal Configurations of Mandibular First Premolars with Distolingual Roots in Mandibular First Molars in a Taiwanese Population

T2 - A Cone-beam Computed Tomographic Study

AU - Wu, Yu Chiao

AU - Cathy Tsai, Yi Wen

AU - Cheng, Wan Chien

AU - Weng, Pei Wei

AU - Su, Chi Chun

AU - Chiang, Ho Sheng

AU - Chung, Ming Pang

AU - Chung, Chi Hsiang

AU - Shieh, Yi Shing

AU - Huang, Ren Yeong

PY - 2018/1/1

Y1 - 2018/1/1

N2 - Introduction: The aim of this study was to determine the prevalence of C-shaped canal configurations (CSs) and radicular grooves (RGs) in permanent mandibular first premolars (MPs) and to investigate the relevance of such complexities with the presence of distolingual roots (DLRs) in permanent mandibular first molars (MMs). Methods: A total of 800 pairs of MPs and MMs were investigated using a cone-beam computed tomographic system (NewTom 5G; QR srl, Verona, Italy). The frequency and symmetry of DLRs in MMs along with the occurrence of RGs and CSs in examined MPs were evaluated. Multivariable logistic regression analysis was applied to examine the correlation between the CSs of MPs with the appearance of DLRs in MMs. Results: In the examined teeth, 23.0% of MMs had a DLR, whereas 16.6% of MPs had RGs and 12.5% of MPs had C-shaped canals. Although the most common canal configuration in MPs is the single canal (74.1%), the other 25.9% still possess complicated root canals. Of these MPs that have different canal configurations, 54.6% had 2 canals, whereas 44.4% had CSs. Specifically, the CS showed a high prevalence of C3 morphologies at 98.9% followed by C1 at 1.1%. A corresponding and increasing frequency was noted in CSs and RGs of MPs and MMs with DLRs (P <.001). After adjusting for related categoric variables, the adjusted odds ratios for CSs of MPs in the bilateral DLR group compared with the non-DLR group was 3.294 (P <.001). Conclusions: This study showed an increased appearance of CSs in MPs when DLRs were present in MMs in the Taiwanese population.

AB - Introduction: The aim of this study was to determine the prevalence of C-shaped canal configurations (CSs) and radicular grooves (RGs) in permanent mandibular first premolars (MPs) and to investigate the relevance of such complexities with the presence of distolingual roots (DLRs) in permanent mandibular first molars (MMs). Methods: A total of 800 pairs of MPs and MMs were investigated using a cone-beam computed tomographic system (NewTom 5G; QR srl, Verona, Italy). The frequency and symmetry of DLRs in MMs along with the occurrence of RGs and CSs in examined MPs were evaluated. Multivariable logistic regression analysis was applied to examine the correlation between the CSs of MPs with the appearance of DLRs in MMs. Results: In the examined teeth, 23.0% of MMs had a DLR, whereas 16.6% of MPs had RGs and 12.5% of MPs had C-shaped canals. Although the most common canal configuration in MPs is the single canal (74.1%), the other 25.9% still possess complicated root canals. Of these MPs that have different canal configurations, 54.6% had 2 canals, whereas 44.4% had CSs. Specifically, the CS showed a high prevalence of C3 morphologies at 98.9% followed by C1 at 1.1%. A corresponding and increasing frequency was noted in CSs and RGs of MPs and MMs with DLRs (P <.001). After adjusting for related categoric variables, the adjusted odds ratios for CSs of MPs in the bilateral DLR group compared with the non-DLR group was 3.294 (P <.001). Conclusions: This study showed an increased appearance of CSs in MPs when DLRs were present in MMs in the Taiwanese population.

KW - C-shaped root canal configuration

KW - Cone-beam computed tomography

KW - distolingual root

KW - mandibular first molar

KW - mandibular first premolars

UR - http://www.scopus.com/inward/record.url?scp=85052143601&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85052143601&partnerID=8YFLogxK

U2 - 10.1016/j.joen.2018.05.016

DO - 10.1016/j.joen.2018.05.016

M3 - Article

AN - SCOPUS:85052143601

JO - Journal of Endodontics

JF - Journal of Endodontics

SN - 0099-2399

ER -