Oral protuberance refers to a protuberance on the hard palate bone in human mouth, also known as hard palate protuberance. This projection is located between the tongue and the oral cavity, which is an important channel connecting the oral cavity and the nasal cavity. The shape of the protrusion is oval, and the surface is smooth and flat. As far as human physiological function is concerned, oral carina plays a vital role in swallowing and breathing.

Different people will have differences in the size and shape of oral carina. In some people, the Erlong process will be more prominent, forming a "high nose" effect, which has been respected in specific human aesthetic standards. On the other hand, in medicine, the defect or abnormality of odontoid process may also bring some adverse effects. For example, carina may cause dyspnea or nasal sounds, which need to be corrected through plastic surgery and other projects.

Oral odontoid process plays an important role in human evolution. Some scholars believe that in the early stage of tooth development, the appearance of oral carina promoted the reduction of jaws of Homo sapiens, thus expanding and enhancing brain capacity. In addition, the odontoid process also played an important role in the evolution of human predators. Dentate process can change the pressure of jaw and throat, and cooperate with other physiological structures, so that human beings can gain better oral communication and respiratory control ability in hunting.