
Aim: To describe a pulpotomy using Mineral trioxide aggregate in an immature permanent mandibular second molar. Summary: Partial pulpotomy was performed on a cariously exposed permanent second mandibular molar showing symptoms of irreversible pulpitis. Follow-up examination revealed complete root formation with resolution of clinical and radiographic symptoms thereby successfully preserving the tooth and vitality of its pulp. Conclusion: MTA may be used as a successful pulpotomy agent in immature permanent molars.