Pain related to temporomandibular joint (TMJ) is common in general public. TMJ disorders are the most common clinical conditions for imaging referrals. The computed tomography plays an important role in the diagnosis of anomalies and pathological conditions of the TMJ, providing a complete visualization of joint region, providing a more accurate diagnosis. For evaluation of the images, it is necessary to have the professional knowledge of sectional anatomy of the joint region, so he can recognize the structural changes. It has been difficult to evaluate the TMJ on conventional radiographs because of overlap by bones of skull base and face. With the advent of multi detector row computed tomography (CT) technology, it has become possible to acquire thin slices and do multiplanar reformatted reconstructions.