Objective : Pulptomy and pulpectomy usually are the most common techniques for pulp therapy for primary teeth and despite the relative ease of performing this techniques iatrogenic errors may occurs such as furcal perforation . MTA and biodentine were selected to test their ability to repair the furcal perforation in primary molars. Subjects and Methods : thirty patients with thirty accidently furcally perforated molars discovered at and sealed immediately at the same visit with either biodentine or MTA and then completed by conventional pulp therapy treatment either by pulptomy or pulpectomy then followed up clinically and radiographically for 12 months. Result: both materials showed highly success rate, the first group of MTA show 100% success. And group II Showed (93.3%) showed success with no significant difference (p= 1.000). Conclusion : MTA and biodentine can successfully used in treatment o f Iatrogenic recent furcal perforations that may occur during pulpotomy in primary molars.