Image fusion is a technique that can be used to merge characteristics of images from different modalities so that certain features can be enhanced, which is not visible in either of the single data alone. Temporomandibular joint (TMJ) is the most delicate and intricate joint structure in the human body, and may be malfunctioned by several categories of diseases. Application of fused images by cone beam CT/CT and MRI gives an intuitive observation of condyle, TMJ disc and related structure changes. This helps in diagnosis of TMJ related abnormalities.