Jaw, also known as the mandible, the length of the mandible is related to genetic factors, usually long-term chin lying on the table will not lead to the flattening of the chin, but this posture is not favorable to the spine.
The mandible is a large bone in the human face, the development of the mandible is mainly affected by congenital factors, in the absence of trauma, disease, the mandible is usually not affected by external factors after the development of the mandible, so lying on the table will not lead to the flattening of the mandible.
Although long-term lying on the table will not affect the shape of the mandible, but this posture will make the spine show a more twisted state, long-term lying on the table may lead to back pain, suggesting that the spine may be overloaded and discomfort, so it is recommended not to lie on the table for a long time to rest.