Six Root Canals in Primary Mandibular Second Molar: Report of Two Cases

Anatomical variations in root morphology have been frequently encountered in pediatric endodontic practice. Due to insufficient knowledge of canal anatomy in primary teeth, having unusual canal morphologies is possibly more prone to endodontic treatment failures. Advanced investigations have given the clinician an open handed chance to recognize those variations and thus effectively manage them to achieve desired results. This paper describes the mandibular primary second molar requiring pulp therapy having three separate and distant canals in the mesial and distal root. Such additional canals were labeled as the middle mesial (MM) canal in the mesial root and the middle distal (MD) canal in the distal root. Additional canals were identified on clinical examination and multiangled radiographs and verified with the help of cone-beam computed tomography (CBCT) imaging. In primary second molars such additional canals are bizarre. This paper describes the bizarre variations that were seen on second deciduous molars.