<prompt> Hinge movement is produce by the action of:Lateral pterygoid.Supra hyoid muscles.Both.Temporalis.  <response>: Hinge movement is a purely rotational movement of the joint which takes place around a horizontal axis till the patient opens his mouth to about 20-25 mm. This movement is produced by the action of the lateral pterygoid and suprahyoid muscles and is aided by gravity. The condyle begins to glide translate beyond 13 rotation. 