Materials and Methods: 62 teeths in 54 patients (> 15 years old) diagnosed reversible pulpitis meeting inclusion criterias were selected in the study and divided into 2 groups: The experimental group with Biodentine (31 teeths) and the control group with Ca (OH) 2 (31 teeths) in alternating order (if one patient owns 2 teeths meeting inclusion criterias, each tooth put into each group).