Resumen
The first thing to do before planning the surgical treatment of unilateral defects or the asymmetry of the facial area is probably establishing adequate mid-plane for comparison and analysis of the normal and affected side. In such cases, a mirror image can be useful to obtain customized and optimized mid-plane for specific individuals considering the degree of the defect and asymmetry. With the concept of the iterative closest point (ICP) algorithm, the surface-based registration of the initial structure and mirrored structure allow us to generate a mirror plane that bisects the mid planes of each structure. This mirror plane would improve the quality of pre-operative evaluation and provide an appropriate start point for the treatment plan with as few errors as possible. Hence, the aim of this article is to introduce a method to create a mirror plane that can be assisting in increasing the accuracy of evaluation and analysis so a precise treatment plan would follow consequently.