Ameloblastoma is a most common benign odontogenic tumour. It is slow growing but aggressive tumour which causes destruction of jaw bones. Clinically it is asymptomatic and can be noticed when the tumour increases gradually in size and causes facial asymmetry or detected during dental radiographic procedures for evaluating the missing or impacted teeth, especially third molar. Unicystic ameloblastomas account for 10-15 % of all intraosseous ameloblastomas. Here we discuss a case report of unicystic ameloblastoma with its clinical and radiological features along with emphasizing the three-dimensional imaging assessment of the case. Key words Ameloblastoma, jaw cyst, Odontogenic tumor, adamantinoma