Efficacy of Combination of Biodentine and Simvastatin as a Pulp Capping Materials in Vital Pulpotomy of Primary Molars: - a Clinical and Experimental Study

Each tooth will be locally anesthetized using topical anesthetic gel benzocaine 20% on the mucosa after drying the area with gauze; the application of local anesthesia using Mepivacaine Hydrocholride 2% with Levonordefrin 1:20000 to the tooth following the recommended technique for each tooth to be treated; then the tooth will be isolated using rubber dam and high suction 3. The pulpotomy procedures will be performed as follow:- All soft caries will be removed by large spoon excavator. Cavity outline will be performed using a sterile #330 carbide bur at high speed (30,000 rpm) contra-angle hand piece will be used under a water coolant.

• Access to a pulp chamber will be detected with a probe, or if the roof of the pulp chamber is sufficiently thin to see the pulpal tissue. When the pulpal exposure is confirmed, the roof of the pulp chamber will be removed with a sterile large low speed round bur #4 with water spray.
• The coronal pulp will be amputated using a sterile sharp spoon excavator, until the orifices of the stumps can be seen clearly without remnant tags and the access will be refined with a sterile high speed fissure bur (El sayed et al., 2019).
• The pulp chamber will be irrigated with normal saline.
• Pulp hemostasis will be achieved using a wet cotton pellet with sterile saline applied on the radicular pulp stumps under slight pressure for 2 to 3 minutes.
• If bleeding cant be controlled within 5 minutes, the tooth will be excluded from the study and the needed treatment will be done.

4. Depending on group allocation, the pulp stumps of molars will be dressed as follows:

Group (I): 20 primary molars were treated with Biodentine :-

The mixture of Biodentine will be made according to manufacturer's directions as follow: