Cone-beam computed tomography analysis on root and canal morphology of mandibular first permanent molar among multiracial population in East Coast Malaysian population

Prunella Ubung Deng; Mohamad Syahrizal Halim; Sam'an Malik Masudi; Saaid Al-Shehadat; Basaruddin Ahmad

doi:10.4103/ejd.ejd_82_18

European Journal of Dentistry, Table of Contents

CC BY-NC-ND 4.0 · Eur J Dent 2018; 12(03): 410-416
DOI: 10.4103/ejd.ejd_82_18

Original Article

Dental Investigation Society

Cone-beam computed tomography analysis on root and canal morphology of mandibular first permanent molar among multiracial population in East Coast Malaysian population

Prunella Ubung Deng

¹Department of Conservative Dentistry, School of Dental Sciences,Universiti Sains Malaysia, Health Campus, Kubang Kerian, Kelantan, Malaysia

,

Mohamad Syahrizal Halim

¹Department of Conservative Dentistry, School of Dental Sciences,Universiti Sains Malaysia, Health Campus, Kubang Kerian, Kelantan, Malaysia

⁵Hospital USM, Health Campus, USM, Kubang Kerian, Kelantan, Malaysia

,

Sam'an Malik Masudi

²Department of Conservative Dentistry, Faculty of Dentistry, Lincoln University College, Selangor, Malaysia

,

Saaid Al-Shehadat

³Department of Preventive and Restorative Dentistry, College of Dental Medicine, Sharjah University, Sharjah, UAE

,

Basaruddin Ahmad

⁴Department of Dental Public Health, School of Dental Sciences, Universiti Sains Malaysia, Health Campus, Kubang Kerian, Kelantan, Malaysia

› Author Affiliations

Abstract

ABSTRACT

Objective: The aim of this study is to investigate the variations in the number of root and canal in the mandibular first permanent molars (MFPMs) teeth in East Coast Malaysian population using cone-beam computed tomography (CBCT). Materials and Methods: CBCT images which show MFPMs recorded in HUSM Dental Clinic between January 2015 and June 2016 was obtained and analyzed for their number of roots and canals. A total of 208 CBCT images of MFPMs were collected; 118 patients had unilateral molars and 90 patients had bilateral molars. The following observations were made: (1) root number; (2) number of canals per root; and (3) comparisons of number of roots and canals according to gender, ethnicity, and position. Results: The majority of cases of bilateral MFPM had the same number of roots (95.6%, 95% confidence interval [CI]: 89.01%, 98.78%) on both the right and left side and only 4 cases (4.4%, 95% CI: 1.22%, 10.99%) had 3 roots on the right and 2 roots on the left sides. The majority of cases had the same number of canals on both sides (66.7%, 95% CI: 55.95, 76.26%) and 33.3% (95% CI: 23.74%, 44.05%) with unequal number of canals. The occurrence of the number of canals was not independent of the sides of the arch (P < 0.001) and there was statistically significantly greater proportion of cases who had greater number of canals on the right side than the left (P = 0.03). The prevalence of right single-rooted MFPM was very small at 0.3% (n = 1) in a Malay male (95% CI: 0.00, 1.83) and the most prevalent was two roots first molar (88.4%). The number of roots was not associated with sex or ethnic group (P > 0.05). The MFPM with a single root was found to have only one mesial canal. For two rooted MFPM, the most prevalent occurrence was two canals at the mesial and one canal at the distal roots (59%); followed by single canals in each mesial and distal (21%) and double canals per root (18%). Three roots MFPM have either single or double canals in the mesial root and double canals in the distal root. Conclusions: The majority of population in the East Coast region of Malaysia has two roots and three root canals in their MFPMs. There was no difference in the number of roots between gender and ethnic and canals between ethnic.

Key words:

Cone-beam computed tomography - Malaysian population - mandibular first permanent molar anatomy - root canal anatomy

Full Text

References

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