Normal incisors are larger than lateral incisors, but the size of incisors is generally harmonized with the size of the oral cavity, the incisors may be too large teeth protruding or teeth congenital morphology abnormalities, corresponding to the orthodontic or dental crown restoration. 1. Anterior protrusion of teeth: Anterior protrusion of incisors can cause visually oversized incisors, after examination, orthodontic treatment can be used to retract the convex front teeth, align the teeth, so that they can be harmonized with the other teeth in the oral cavity. 2. Dental congenital morphological abnormalities: genetic or endocrine related, the oral cavity can appear too large teeth. If the tooth is too big and affects the aesthetics, you can consider root canal treatment, grinding part of the tooth tissue for crown restoration. Incisor oversized specific recommendations to the hospital examination, targeted treatment.