Detecting the Second Mesiobuccal Canal in Maxillary Molars in a Saudi Arabian Population: A Micro-CT Study

Abstract

The aim of this study was to determine MB2 canal detectability in maxillary first and second molars obtained from a Saudi population using micro-CT. Maxillary first (n=35) and second (n=30) molars were scanned with micro-CT technology. The number of canals was recorded, and in case of having more than one canal, the level of extracanal detection was analyzed. The presence of extracanal was categorized based on the level they were first detected. Among the maxillary first molars, 28 (80%) and six (17%) teeth had two and three MB canals, respectively. Among the maxillary second molars, 24 (80%) and four (13%) teeth had two and three MB canals, respectively. The MB2 canal was detected at the chamber floor in 70% and 61% of the maxillary first and second molars, respectively. At 1 mm depth, the MB2 canal was found in 15% and 18% of the maxillary first and second molars, respectively. At 2 mm depth, the MB2 canal was found in 3% and 18% of the maxillary first and second molars, respectively. The remaining teeth had the MB2 canal at levels deeper than 2 mm. The MB2 canal was detected in 97% and 93%% of maxillary first and second molars, respectively. Among them, the MB2 canal could be immediately detected in 70% and 61% of the maxillary first and second molars, respectively, once the pulp chamber is exposed. However, the rest of the MB2 were observed at deeper levels in the root and this requires troughing preparation in the chamber floor.

Root Canal Treament of Maxillary Molar With Second Mesiobuccal Canal – A Case Report

“…More than 70 until 97% of maxillary first molar showed the occurrence of the second mesiobuccal canal [2,6] and this condition is similar for all of the ethnic groups [1]. In vitro studies indicated that a second canal is present in up to 90% of maxillary first molars teeth [3], while in vivo studies reported a lower prevalence of the second mesiobuccal canal (77,2%-79,8%) [3,4].…”

“…The second mesiobuccal canal could be immediately detected in 70% of the maxillary first molar, once the pulp chamber is exposed [2]. The rest of the second mesiobuccal were observed at deeper levels in the root and this requires careful probing in the pulp floor [2].…”

“…The second mesiobuccal canal could be immediately detected in 70% of the maxillary first molar, once the pulp chamber is exposed [2]. The rest of the second mesiobuccal were observed at deeper levels in the root and this requires careful probing in the pulp floor [2]. There are several type canal configuration of mesiobuccal root canals in the maxillary first molar, 40-45% of them has one canal [1,7], 37% of them has two orifices and one…”

“…Failure of root canal treatment can be attributed to several factors, one of which is unprepared missed canals [1,2]. Maxillary first molars generally have three-roots with additional canal located in the mesiobuccal root [3].…”

A Rare Case of Single-Rooted Mandibular Second Molar with Single Canal

“…Several of the recent advances in endodontics have contributed to safe, predictable, and efficient root canal treatment. Such developments include digital radiography, cone beam computed tomography (CBCT), microcomputed tomography (micro-CT), dental operating microscope (DOM), thermomechanically treated nickel-titanium files, and improved obturation devices [14][15][16][17]. The aim of this case report was to describe the diagnosis and management of rare root canal configuration of a mandibular second molar, showing one canal in a single conical root, using the contemporary advancements in endodontics.…”