Aim: study was done to evaluate the incidence of MB2 canals using three different methods (CBCT, CLINICAL ANALYSIS AND DENTAL LOUPES) and to compare the efficacy of the three methods in identifying the incidence of MB2 canals in maxillary permanent first molars.
Materials And Methods: The study sample consisted of 120 extracted intact permanent maxillary molars. These extracted teeth were subjected to CBCT. Later the teeth were access opened with naked eye to find the incidence of MB2 canal, and then the teeth were visualised under dental loupe to locate MB2 canal if they were missed under naked eye. Results was statistically analysed by Mc Nemar's tests with Bonferroni correction, Chi square test and Cochran's Q test.
Result: CBCT showed high incidence (68.3%) of MB2 canal in maxillary first molars and it showed to be a reliable method in detecting MB2 canal. When compared to dental loupe (52.5%) and naked eye (25%), the dental loupe improved the detection of MB2 canal.
Conclusion: Within the parameter of this study in detecting the incidence of MB2 canal, using CBCT dental loupes and naked eye, detection of MB2 canal was significantly higher with CBCT followed by dental loupe and least with naked eye.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5706321 | PMC |
http://dx.doi.org/10.4103/0972-0707.218308 | DOI Listing |
Unlabelled: The first maxillary molar is one of the most difficult teeth for endodontical treatment; it presents the highest failure rates due to the impossibility of locating and treating the second mesiobuccal canal (MB2). The aim of our work was study of second mesiobuccal canal in maxillary first molar and compare obtained data with literature sources for increasing the efficiency of treatment.
Materials And Methods: The study involved 59 patients with exacerbation of chronic pulpitis or chronic periodontitis who were distributed according to age: 14-20 years, 21-30 years and 31-40 years.
Int Endod J
December 2024
Department of Endodontics, School of Dentistry, State University of Rio de Janeiro (UERJ), Rio de Janeiro, Rio de Janeiro, Brazil.
Aim: To investigate the development of dentinal microcracks resulting from the progressive enlargement of the buccal canals of maxillary molars with and without the MB2 canal employing instruments with the same tip and four different tapers.
Methodology: Twenty maxillary molars with (n = 10) and without (n = 10) the MB2 canal underwent micro-CT scanning. Their mesiobuccal and distobuccal canals were sequentially enlarged using nickel-titanium instruments with sizes 25/.
J Conserv Dent Endod
October 2024
Department of Conservative Dentistry and Endodontics, Dr. R. Ahmed Dental College and Hospital, Kolkata, West Bengal, India.
Objective: This study's objective is to analyze the prevalence as well as the configuration of second mesiobuccal (MB2) in maxillary 2 molars and predict its existence based on mesiobuccal-palatal (MB-P) distance, MB-P/distobuccal-palatal (DB-P) distance ratio and mesiobuccal, distobuccal, and palatal orifice (MDP) angle with the help of cone-beam computed tomography.
Materials And Methods: The presence and absence of MB2 are noted down in 300 maxillary 2 molars. Canal configuration was observed from the orifice to the apex in the mesiobuccal root.
Dentomaxillofac Radiol
January 2025
Division of Oral and Maxillofacial Surgery, Medicine, Pathology and Radiology, Dublin Dental University Hospital, Trinity College Dublin, Dublin, Lincoln Place, Dublin, D02 F859, Ireland.
Objectives: To identify if supplemental preoperative cone beam CT (CBCT) imaging could improve outcomes related to endodontic access cavity preparation, using 3D-printed maxillary first molars (M1Ms) in a rigorously simulated, controlled human analogue study.
Methods: Eighteen operators with 3 experience-levels took part in 2 simulated clinical sessions, 1 with and 1 without the availability of CBCT imaging, in a randomized order and with an intervening 8-week washout period. Operators attempted the location of all 4 root canals in each of 3 custom-made M1Ms (2 non-complex and 1 complex mesiobuccal [MB] canal anatomy).
BMC Oral Health
September 2024
Department of Pediatric Dentistry, Faculty of Dentistry, Damascus University, Damascus, Syria.
Aim: To investigate the root number and morphology of the maxillary second molars in the Syrian population besides bilateral symmetry, and the effect of gender.
Methods: 250 Cone Beam Computed Tomography (CBCT) images (140 females, 110 males) were examined by two endodontists. The detailed analysis included the number of roots, the number of canals and their configurations, bilateral symmetry, and relation to gender.
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