Study Reason for exclusion
El-Chaar [22] Case series
Brkovic et al. [23] Case report
Valdec et al. [24] Case series
Carmagnola et al. [25] No evaluation of dimensional ridge changes. Histological data regarding bone quality is not sufficient.
Milani et al. [26] No evaluation of dimensional or histological socket changes.
Crespi et al. [27] Only soft tissue and no biomaterials were used for socket preservation
Mozzati et al. [28] No evaluation of dimensional ridge changes. Histological data regarding bone quality is not sufficient.
Laurito et al. [29] No evaluation of dimensional ridge changes. Histological data regarding bone quality is not sufficient.