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<p>Location of the second mesiobuccal canal of maxillary molars in endodontic therapy<br><br>Lieutenant Commander Bernard H. Hofmann, DC, USNR and Captain Jeffrey R. Thorpe, DC, USN<br><br>Purpose<br>A source of great frustration associated with the endodontic therapy of maxillary molars is whether or not a second mesiobuccal canal (MB2) exists, and to what extent should practitioners go in pursuit of locating it. The mesiobuccal (MB) root of maxillary molars has generated much research and clinical investigation within the past ten years. Recent research has shown that a large percentage of MB roots contain two canals. Therefore, one should always assume that two canals exist in the MB root until careful examination proves otherwise. The purpose of this Clinical Update is to review the literature and provide the clinician with the tools and techniques to locate and treat the MB2 canal.
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<br>Subjects: Molar ; Tooth Root ; anatomy</div>
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U.S. Navy. Naval Postgraduate Dental School</div>
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