“…According to Blum [3], MacGregor [15], Nusair and Abu Younis [16], Birn [17], Lilly et al [18], Sweet and Butler [19], Torres et al [20] and Ygge et al [21], this great variability in the reported incidence of dry socket may largely be due to differences in diagnostic criteria and methods of assessment [3], intra-operative and post-operative treatment [3], patient age [3], gender [15], surgical technique [17], smoking [19], medical status [18], operator experience [20], and use of oral contraceptives [21].…”