The purpose of this article is to highlight the importance of relationship of teeth with masticatory system. Masticatory system includes TMJ, muscles of mastication and teeth. Treatment plan is designed after evaluation of masticatory system; collecting detailed data of records and facebow mounted casts in centric relation. Success of occlusal treatment depends on anterior and canine guidances as they protect the posterior teeth. It is important to have absolute harmony between all the three components of masticatory system while doing any dental treatment.

Keywords: Masticatory System; Facebow; Centric Relation; Anterior and Canine Guidances.