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jaw |
Also found in: Dictionary/thesaurus, Medical, Wikipedia, Hutchinson | 0.09 sec. |
jawEither of two bones that frame the mouth: a movable lower jaw (mandible) and a fixed upper jaw (maxilla). These hold the teeth (see tooth) and are used for biting and chewing and in speech. Vertical portions at the back of the lower jaw form hinge joints at the temples. The front of its arch thickens to form the chin. The upper jaw is attached to bones at the bridge of the nose, in the eye sockets and roof of the mouth, and the cheekbones. It contains the large maxillary sinus. jaw 1. the part of the skull of a vertebrate that frames the mouth and holds the teeth. In higher vertebrates it consists of the upper jaw (maxilla) fused to the cranium and the lower jaw (mandible) 2. the corresponding part of an invertebrate, esp an insect 3. a pair or either of a pair of hinged or sliding components of a machine or tool designed to grip an object |
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Occlusion can be one of the most difficult subjects for dentists to understand, and this guide thorough explains jaw movement and how it can contribute to a variety of medical conditions. A displaced disk may produce clicking or popping sounds, limit jaw movement and cause pain when opening and closing the mouth. Feedback Reduction: One of the drawbacks of digital hearing aids is that they can cause feedback in received sound because of jaw movement or swallowing activity. |
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