Aim: To present a case of occurrence of type B radix entomolaris in permanent mandibular first molars. Background: Radix entomolaris is a condition where an extra root is present distolingually to the distal root in the tooth. It can be seen in primary as well as permanent teeth. Case description: An 8-year-old patient reported with complaint of pain in lower left and right back tooth region since one month. On clinical examination, deep occlusal caries (ICDAS 5) was seen with respect to 36 and 46. On radiographic examination, an extra root was seen along with distal root in left and right mandibular first molar tooth. Conclusion: Knowledge of dental anomalies is very important from the perspective of pedodontist and endodontist. If any of the anomalies is missed by the clinician, there are high chances of failure of the treatment. Upon caries excavation, pulp was not exposed so indirect pulp capping treatment was done for 36 and 46. Clinical significance: Radix entomolaris is considered as an important condition from endodontic point of view and for providing good treatment especially in cases of root canal therapy.
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