IRCT20210311050676N1 IRCT 2021-03-21 Kashan University of Medical Sciences Evaluation of the effect of Diode 980 nm laser on the success of deciduous teeth pulpotomy Comparison of clinical and radiographic outcome between diode980nanometerms laser pulpotomy and formocresol pulpotomy in primary molars 2021-03-25 anticipated 22 Complete https://irct.ir/trial/55073 interventional Randomization: Not randomized, Blinding: Double blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment, Blinding description: Participants don't know which teeth have been treated with laser and which teeth have been treated with formocresol The doctor who performs treatment, know which teeth have been treated with laser and which teeth have been treated with formocresol Responsible for data collection and analysis don't know which teeth have been treated with laser and which teeth have been treated with formocresol. 3 Vital pulp therapy in primary teeth. Intervention 1: Intervention group: pulpotomy with formocresol, In this group, cotton soaked in diluted formocresol (1: 5) of master dent is placed on each orifice for 5 minutes. Intervention 2: Intervention group: pulpotomy with DIODE980nm laser, In this group, pulpotomy with diode 980 nm laser from company nu smile simpler 2, at a distance of 1 mm from the orifice is continuously irradiated by a fiber optic with a diameter of 320 μm for 5 seconds and applied non-contact on each orifice, which if coagulation is observed Blood decreases this time. Undecided - It is not yet known if there will be a plan to make this available Justification or reason for indecision in sharing IPD is There is no more information