Final answer:
The statement is true; teeth are indeed secured into the sockets of both the mandible (lower jaw) and the maxilla (upper jaw). These attachments are made secure by gomphosis joints and are critical for proper tooth function.
Step-by-step explanation:
The statement that teeth fit into the sockets of both the mandible and the maxilla is true. The mandible forms the lower jaw and is the only moveable bone of the skull. The maxilla is the upper jaw. Teeth are secured in the alveolar processes (sockets) of these bones. The gingivae (gums) are soft tissues lining the alveolar processes and surrounding the necks of the teeth, while the periodontal ligament, a connective tissue, holds the teeth in their sockets.
A specialized fibrous joint called a gomphosis anchors the root of a tooth into its bony socket within the maxillary or mandible bone. This type of joint is considered a synarthrosis because of its immobility. The secure attachment allows a tooth to withstand the forces of biting and chewing.