Simvastatin Around Immediate Implant

Inclusion Criteria: * Patients between 20 and 50 years old * requiring the extraction of 2 non-restorable maxillary canine or premolar on each side of the arch * following extraction, the crestal bone had to be located 3 mm apical to the free gingival margin * at least 3 mm of bone beyond the root apex was required to guarantee implant primary stability Exclusion Criteria: * unstable systemic diseases precluding surgical procedures * compromised general health conditions that would impair bone healing including present history of bone irradiation, patient on bisphosphonates therapy, antitumor chemotherapy * pregnancy * compromised healing conditions e.g. uncontrolled diabetes mellitus