RESUMO
Endodontically treated teeth with the loss of coronal tooth structure when left untreated for a long period may cause supraeruption, drifting, tipping, and rotation of adjacent and opposing teeth. This may be challenging to the clinician, when fabricating a crown because of inadequate interocclusal space. This case report describes a simple technique to restore an endodontically treated maxillary first premolar with the loss of coronal tooth structure and lack of interocclusal space. The maxillary first premolar had a single root canal and was endodontically treated. The lower premolar had supraerupted reducing the interocclusal space. A minimally invasive and esthetic technique was used to restore the tooth with limited interocclusal clearance. The tooth was restored with a Richmond crown, which had the morphology of a canine instead of a premolar. Thus, the tooth was salvaged by changing the morphology of the crown and the desired functional and esthetic results were obtained.
RESUMO
The mesiobuccal root of the maxillary molars is well known to pose a hindrance during endodontic therapy. Presented here is a case of a maxillary left second molar where three canals were located in its mesiobuccal root with the use of visual and diagnostic aids. Difficulties encountered during the process of unveiling the tooth's internal anatomy were discussed. The dilemmas encountered pertained to the root canal configuration, the nomenclature of the extra canals, and the justification for the presence of a third canal. The root canal configuration of 3-2-1 was confirmed for the mesiobuccal root using information gained from clinical, radiographic, and multi-detector computed tomography (MDCT) scan findings. This case demonstrates the need for efforts to locate extra canals in the mesiobuccal root of the maxillary molars as their internal anatomy remains a mystery.