There are two types of geodesics: dental geodesics, also known as pseudo-geodesics, and true geodesics, known as bony geodesics. There is a relatively simple way to determine bony and dental hygroma, which is to have the patient bite down on the upper and lower incisors to see if the upper incisors can bite down on the lower incisors. If the patient can bite down, it is likely that the patient has a dental inclusion; if the patient cannot bite down, it is likely that the patient has a bony inclusion. In addition, the patient’s facial shape can also be judged by observation. If the patient’s face looks normal from the side, but the patient opens his or her mouth and finds that it is a geodesic, it is likely that the patient has a dental geodesic; even if the patient’s teeth are normal, but the face looks geodesic from the side, it is likely that the patient has a bony geodesic. To confirm the diagnosis of osseous geodesis, an examination in the hospital is required. The doctor will recommend a full-mouth surface tomography and projection measurements to further determine the diagnosis. Osseous ingrowth is more severe than pseudo-egrowth and its treatment is more complex. A dental inclusion is a condition where the position of the bone is basically normal, but the teeth are misaligned, with the lower teeth tilted outward too much, or the upper teeth tilted inward more significantly, and can be treated with orthodontic treatment. Osseous ingrowth, on the other hand, is the result of a significant displacement of the jawbone and requires orthognathic surgery to correct.