AMIRZARGAR, R.; SHIRANI, G.; MAHMOUDHASHEMI, H.; KHOSHZABAN, A.; HASHEMINEJAD, M. A comparative study of ridge preservation using calcium sulfate and collagen membrane with and without freeze-dried bone allograft following tooth extraction. Journal of Osseointegration, v. 10, n. 1, p. 11-16, 2 Mar. 2018.