Anatomical profile of the mesial root of the Burmese mandibular first molar with Vertucci’s type IV canal configuration

Abstract

This study evaluated the anatomical profile of the mesial root canals of the Burmese mandibular first molar with Vertucci's type IV canal configuration (VT4) using microcomputed tomography analysis. Seventy-five mesial roots of extracted mandibular first molars were scanned and evaluated. Fourteen middle mesial canals (MMCs) were observed in the specimens; each specimen had an average of 1.63 lateral canals and 3.77 apical foramina. The lateral canals arising from the mesiobuccal canal, mesiolingual canal, MMC, and isthmus terminated at an average distance of 0.92, 0.73, 2.11, and 1.89 mm, respectively, from the apex. The mean distance between the centers of the mesiobuccal and mesiolingual canals at 1.5 mm coronal to the furcation was 2.60 mm. A higher incidence of isthmus was observed in the apical 2-6-mm region compared with the apical 0-2-mm region (P < 0.05). The incidence of lateral canals in the isthmus was similar to that of the mesiobuccal and mesiolingual canals (P > 0.05). This study shows that the mesial root of the Burmese mandibular first molar with VT4 has complex anatomical profiles comprising MMCs and isthmus and their lateral canals.

Internal and external morphology of mandibular molars: An original micro‐CT study and meta‐analysis with review of implications for endodontic therapy

“…Apical deltas were most frequently located in the distal root of the mandibular first molar (14.2%), followed by the mesial root of the mandibular first molar (11.4%), the mesial root of the mandibular second molar (8.5%), and the distal root of the mandibular second molar (7.1%). Root canal complexities are common in the apical region (Maung Maung et al, ). Consequently, a high prevalence of apical foramina and deltas is associated with a higher prevalence of apical ramification (Maung Maung et al, ).…”

“…Root canal complexities are common in the apical region (Maung Maung et al, ). Consequently, a high prevalence of apical foramina and deltas is associated with a higher prevalence of apical ramification (Maung Maung et al, ). Furthermore, such anatomical variations can cause primary canal infections, or secondary infections after treatment (Ahmed et al, ).…”

An original micro‐CT study and meta‐analysis of the internal and external anatomy of maxillary molars—implications for endodontic treatment

“…The apical region has numerous root canal complexities such as apical foramina and deltas, and their presence is associated with apical ramification (Maung Maung Kyaw Moe et al, ). In our meta‐analysis, one apical foramen was most common in the distobuccal root of the maxillary first molar (95.5%).…”

“…The number of such communications is important for surgical endodontics during root‐end resection and root‐end cavity preparation (Rouhani et al, ). They represent a potential space for the proliferation of microbes and the accumulation of debris from mechanical debridement (Maung Maung Kyaw Moe et al, ). Knowledge of these anatomical anastomoses allows for proper cleaning and disinfection of root canal intercommunications.…”

“…Future studies should determine the start and end points of measurements and develop a unitary method for measuring tooth length. Such data could enable endodontists to detect canals with calcified orifices and reduce the risk for perforation (Maung Maung Kyaw Moe et al, ). On the basis of our clinical experience we recommend that such measurements be made from the tip of the closest cusp to the apical foramen of the appropriate root canal.…”