The growth of supernumerary teeth in adulthood varies according to the situation. If the buried supernumerary tooth occurs unintentionally through oral examination and X-ray filming, and the position of the bone buried tooth is relatively high, it can be left untreated if it has no effect on other teeth in the mouth. If a supernumerary tooth grows in the direction of the root of a permanent tooth, it will cause damage to the root of the permanent tooth and is usually extracted. Adult supernumerary teeth that have not erupted may also be extracted if they show signs of growing into a dental cyst. Most adult supernumerary teeth are older and generally asymptomatic and can be left untreated. If adults, especially in the lower jaw, with the eruption of supernumerary teeth, from the tongue, buccal side of the eruption, the cusp of the teeth cause localized gingival pain and discomfort or ulcers, you can determine the position of the supernumerary teeth with the permanent teeth through the X-ray, can be given to the extraction. Therefore, if an adult has a supernumerary tooth, depending on the position of the eruption, if it needs to be extracted, try to extract it, if the position is deeper and has no effect on other teeth, it can be observed and treated, and it can not be extracted.