Bunions usually require correction and can often be deep coverings or deep overlays, and generally the more severe deep coverings and deep overlays need to be corrected. If the incisal edges of the lower front teeth are not biting on the lingual side of the upper front teeth, they are biting on the gums on the lingual side of the upper front teeth. Usually over time it causes the front gums to recede and even the front teeth to loosen, so the more severe deep coverings and deep overjaws need to be corrected. Deep overjet means that the incisors grow obliquely toward the lip, or protrude forward, and the lower incisors extend outward much like a roof. Deep overjet, on the other hand, means that the upper teeth are much longer than the lower teeth, blocking the lower teeth, so that even when the mouth is closed or biting, the upper front teeth completely block the lower front teeth, which are not visible. Pericoronitis can usually be resolved with orthodontics during adolescence, or with orthognathic surgery if the patient undergoes it in adulthood and there is significant bony malocclusion.