IRCT20161119030971N2 IRCT 2018-03-13 Private office primary molars pulpotomy Evaluation of effect of ferric sulfate & formocresol on clinical & radiographic success of primary molars pulpotomy -48 months follow up 2018-01-22 anticipated 40 Complete https://irct.ir/trial/28463 interventional Randomization: Randomized, Blinding: Double blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment, Other design features: Long term follow up, Randomization description: simple randomized,randomized numbers table, Blinding description: the patient does not know which material is being used the evaluator while clinical & radiographic evaluation does not know. N/A Evaluation the effect of ferric sulfate in treatment of pulpotomy. Intervention 1: In this group,ferric sulfate will be used once for 30 seconds. Intervention 2: Control group: diluted formocresol solution(1:5)(sultan inc) once for 5 minutes will be used. No - There is not a plan to make this available Justification or reason for not sharing IPD is no more information