Objective: This study was directed to evaluate the regenerative potential of simvastatin (SIM) on dental pulp stem cells (DPSCs) in non-vital immature dogs' teeth both histologically and radiographically.Methods: The present study was carried out on 6 adult healthy male mongrel dogs aged from 4 to 6 months and their weight ranged from 12 to 17 kg.Three premolars (two rooted) in each quadrant were ...