“…Although studies on ZACD have been conducted at many countries most of the published literature originates from population based studies from Iran [4,12,24,25], Turkey [16,17,18,19,20 ] India [22,23,27], USA [5,13,14], Brazil [3,21], Germany [15]. the prevalence rates of ZACD was observed to more in studies conducted on the Iranian, Turkish and American population when compared to Indian population, however it is to be noted that most of the recent studies on the later population has been conducted with CBCT therefore more prevalence was observed owing to better visualization of the ZACD.…”