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Stomatologija 2020; 22 (3): 75-9 259 KB

Microcomputed tomography evaluation of the root canals morphology of the mandibular first molars

Urtė Asijavičienė^*, Saulius Drukteinis^*, Aleksander Suduiko^*

Summary

Objective. The knowledge of the internal anatomy of the root canal system and its variations has a significant impact on the quality and outcome of endodontic treatment. The aim of this study was to evaluate the three-dimensional anatomical features of the root canals of mandibular first molars by using micro-computed tomography.

Material and methods. Sixty mandibular first molars were scanned using a high-resolution micro-computed tomography device. The 2- and 3-3-dimensional anatomical features of each root such as distance between anatomical apex and apical foramen, the number of the lateral canals and configuration of the isthmuses, were evaluated.

Results. The average distance between the anatomical apex and the apical foramen was 1.047 mm. Lateral canals were present in 85% of the cases, while 76% of them were localized in the apical third of the root. 80% of the mesial roots had isthmuses and the configuration of Type I, according to the Fan classification, was the most prevalent (35%).

Conclusion. The results of this study revealed the wide variations of internal root canal anatomy in mandibular first molars, including lateral canals and isthmuses. A clinician should always consider the possible difficulties of anatomical variations before starting root canal treatment, to select the best and optimal treatment strategies.

Key words: microcomputed tomography, root canal anatomy, mandibular first molar.

Received: 20 10 2019

Accepted for publishing: 25 09 2020

^*Vilnius University, Faculty of Medicine, Institute of Odontology, Vilnius, Lithuania

Address correspondence to Urtė Asijavičienė, Faculty of Medicine, Institute of Odontology, Filaretų g. 35-12, Vilnius, Lithuania.

E-mail address: urteasijaviciene@gmail.com



	Baltic Dental and Maxillofacial Journal

September, 2020, Vol. 22, No. 3 CONTENTS REVIEWS Influence of temporary filling material on dental cracks and fractures during endodontic treatment: A systematic review Aušra Mickevičienė, Greta Lodienė, Tadas Venskutonis 67-74 SCIENTIFIC ARTICLES Microcomputed tomography evaluation of the root canals morphology of the mandibular first molars Urtė Asijavičienė, Saulius Drukteinis, Aleksander Suduiko 75-79 Nasalance scores for Vietnamese-speaking children with oral clefts Van Thai Nguyen, Lagle Lehes, Thi Thuy Hang Truong, Thi Van Anh Hoang, Triin Jagomägi 80-85 REVIEWS Study and evaluation of the gubernacular canal by means of cone beam computed tomography Thaís Silva Cerqueira, Kariza Vargens Diniz Correia 86-91 CASE REPORT Pleomorphic adenoma of buccal mucosa: a case report and review of the literature Ernani Canuto Figueirêdo Júnior, Isabella Jardelino Dias, Pollianna Muniz Alves, Cassiano Francisco Weege Nonaka, Daliana Queiroga de Castro Gomes, Jozinete Vieira Pereira 92-96 © 2021 Stomatologija		Stomatologija 2020; 22 (3): 75-9 259 KB Microcomputed tomography evaluation of the root canals morphology of the mandibular first molars Urtė Asijavičienė^, Saulius Drukteinis^, Aleksander Suduiko^* Summary Objective. The knowledge of the internal anatomy of the root canal system and its variations has a significant impact on the quality and outcome of endodontic treatment. The aim of this study was to evaluate the three-dimensional anatomical features of the root canals of mandibular first molars by using micro-computed tomography. Material and methods. Sixty mandibular first molars were scanned using a high-resolution micro-computed tomography device. The 2- and 3-3-dimensional anatomical features of each root such as distance between anatomical apex and apical foramen, the number of the lateral canals and configuration of the isthmuses, were evaluated. Results. The average distance between the anatomical apex and the apical foramen was 1.047 mm. Lateral canals were present in 85% of the cases, while 76% of them were localized in the apical third of the root. 80% of the mesial roots had isthmuses and the configuration of Type I, according to the Fan classification, was the most prevalent (35%). Conclusion. The results of this study revealed the wide variations of internal root canal anatomy in mandibular first molars, including lateral canals and isthmuses. A clinician should always consider the possible difficulties of anatomical variations before starting root canal treatment, to select the best and optimal treatment strategies. Key words: microcomputed tomography, root canal anatomy, mandibular first molar. Received: 20 10 2019 Accepted for publishing: 25 09 2020 ^*Vilnius University, Faculty of Medicine, Institute of Odontology, Vilnius, Lithuania Address correspondence to Urtė Asijavičienė, Faculty of Medicine, Institute of Odontology, Filaretų g. 35-12, Vilnius, Lithuania. E-mail address: urteasijaviciene@gmail.com