Cutaneous sinus of dental origin

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Cutaneous sinus of dental origin is a skin opening that drains pus from a dental infection to the surface of the face or neck. It is less common than infections that drain into the mouth, which usually form a gumboil (parulis). These sinuses most often show up under the chin or along the lower jaw. If the dental infection isn’t treated, the sinus can flare up and heal repeatedly, with periods of discharge. The tract can cause scarring and cosmetic concerns. In some cases, minor surgery is done to remove the remaining tract after the infection is controlled.