The lower jaw is formed by which bone?

The lower jaw is formed by which bone?

• A. Temporal bone
• B. Maxilla
• C. Vomer
• D. Mandible

Answer: (D)

The lower jaw is formed by the mandible. It’s a single, horseshoe-shaped bone that houses the lower teeth and moves at the temporomandibular joints with the temporal bones, allowing chewing and speaking. The temporal bone is part of the skull and forms part of the jaw joint but is not the lower jaw itself. The maxilla forms the upper jaw and holds the upper teeth. The vomer is a nasal septum bone. In dental practice, understanding the mandible’s movability and its relationship to the skull helps with occlusion, denture design, and implant planning.

The lower jaw is formed by the mandible. It’s a single, horseshoe-shaped bone that houses the lower teeth and moves at the temporomandibular joints with the temporal bones, allowing chewing and speaking. The temporal bone is part of the skull and forms part of the jaw joint but is not the lower jaw itself. The maxilla forms the upper jaw and holds the upper teeth. The vomer is a nasal septum bone. In dental practice, understanding the mandible’s movability and its relationship to the skull helps with occlusion, denture design, and implant planning.