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Anatomy of JAW motion | How does your JAW actually move? Explained in 3D Ever wondered what makes your jaw open, close, or even chew seamlessly? The anatomy of jaw motion is a fascinating interplay of bones, muscles, and joints working in perfect harmony. The temporomandibular joint (TMJ) is the key player here. It's one of the most complex joints in the body, allowing your jaw to move up and down, side to side, and even glide forward. This motion is powered by muscles like the masseter, tempora

Orientation jaw relations are those orient the mandible to the cranium in such a way, that, when the mandible is kept in its most anterior and superior position, the mandible can rotate in sagittal plane around an imaginary transverse axis passing through or near the condyles. It demonstrates the relationship between the jaws & axis of movement. Heartwell defines hinge axis as an imaginary line around which the condyles can rotate without translation. The opening axis is an imaginary line around