Three-dimensional Modeling and Measurements of Root Canal Anatomy in Second Primary Mandibular Molars: a Case Series Micro CT Study

Overview

Journal Eur Arch Paediatr Dent

Publisher Springer

Specialties Dentistry
Pediatrics

Date 2019 Mar 5

PMID 30830644

Citations 5

Authors

C El Hachem

M K Kaloustian

W Nehme

N Ghosn

J C Abou Chedid

Affiliations

Soon will be listed here.

Abstract

Purpose: This study aimed at establishing a comprehensive specification of the root canal anatomy of second primary mandibular molars using micro computed tomography (CT).

Methods: 10 s primary molars from Caucasian young patients were selected for this purpose. Micro CT imaging with a high resolution of 20 microns was performed to observe the roots and canals according to specific criteria. The Vertucci canal configuration, the presence of lateral canals and their location, the presence of an isthmus and its location, were first observed. Then, the length of the canals, their diameter in the mesio-distal and vestibulo-lingual direction, the dentinal thickness and the direction of the minimal dentinal thickness were measured.

Results: The mean working length was not significantly different between the canals (p = 0.710). The bucco-lingual diameter was significantly higher when the tooth had a single distal canal at the coronal (p < 0.001), middle (p < 0.001) and apical (p = 0.012) levels. The root dentin thickness on the distal wall of the mesial root and the mesial wall of the distal roots were reduced, respectively, from the coronal to the apical thirds.

Conclusions: The results obtained in this case series report clearly show a complex, sometimes unpredictable, anatomy with dangerous areas where dentin is extremely thin. The plethoric presence of anastomoses, large bands of isthmus, lateral canals at all levels induces the need for the development of instruments specific to pulpectomies on primary teeth.

Citing Articles

Description of the root anatomy of the primary molars using high resolution computed microtomography (Micro-CT). An analysis of three-dimensional root canal system.

Vidi B, Gil-Valcarcel A, Obispo-Diaz C, Sanchez-Jorge I, Mena-Alvarez J, Aragoneses-Lamas J Front Dent Med. 2025; 5:1522414.

PMID: 39917696 PMC: 11797784. DOI: 10.3389/fdmed.2024.1522414.

Cone-beam computed tomography assessment of the root canal morphology of primary molars.

Rahmati A, Khoshbin E, Shokri A, Yalfani H BMC Oral Health. 2023; 23(1):692.

PMID: 37749546 PMC: 10521415. DOI: 10.1186/s12903-023-03414-z.

The Contribution of Various In Vitro Methodologies to Comprehending the Filling Ability of Root Canal Pastes in Primary Teeth.

El Hachem C, Chedid J, Nehme W, Kaloustian M, Ghosn N, Rabineau M Bioengineering (Basel). 2023; 10(7).

PMID: 37508845 PMC: 10376379. DOI: 10.3390/bioengineering10070818.

Physicochemical and Antibacterial Properties of Conventional and Two Premixed Root Canal Filling Materials in Primary Teeth.

El Hachem C, Chedid J, Nehme W, Kaloustian M, Ghosn N, Sahnouni H J Funct Biomater. 2022; 13(4).

PMID: 36278646 PMC: 9589963. DOI: 10.3390/jfb13040177.

Root and Root Canal Anatomy of Primary Mandibular Central Incisor, Lateral Incisor, and Canine in Indian Children: A Cone Beam Computed Tomography Study.

Katge F, Dixit U Int J Dent. 2022; 2022:7191134.

PMID: 35356037 PMC: 8958108. DOI: 10.1155/2022/7191134.

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