IRCT20191015045118N1 IRCT 2019-12-04 Ahvaz University of Medical Sciences Socket preservation Evaluation of different particle size of Iranian allograft(cenobone) in socket preservation procedure 2017-10-02 anticipated 25 Complete https://irct.ir/trial/43038 interventional Randomization: Randomized, Blinding: Single blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment, Randomization description: First, a list was made and patients were added to the list at the time of referral. Patients were randomly divided into two groups by random number table. In the first group, small particle size was used for socket preservation and in the second group, large particle size was used, Blinding description: Using unknown particle size that patient don't knows how many particle size used(using similar package). N/A Socket preservation. Intervention 1: first group, small particles sized bone graft material was used and The same collagen membrane was applied to the bone powder. The gingiva was finally sutured and the sutures were removed after two weeks. Intervention 2: Intervention group: second group, the large particle size was used. The same collagen membrane was applied to the bone powder for both groups. The gingiva was finally sutured and the sutures were removed after two weeks. Yes - There is a plan to make this available What will be shared: Primary outcom will share When: We start to share after june 2020 To whom: Any one can access to data Conditions: Any one can use Where to obtain: Dentistry factuly of ahwaz jundishapour univercity How to obtain: Emailing the author takes about a week Comments: