Improvement of Eruption Disturbance in Mandibular Canine Caused by a Supernumerary Tooth.

A supernumerary tooth is a dental abnormality, which, in some cases, causes disturbance in the eruption of permanent teeth. A seven-year-and-four-month-old female was diagnosed with eruption disturbance in mandibular canine eruption caused by a supernumerary tooth. At the age of eight years and six months, the supernumerary tooth was extracted and space maintenance by a lingual arch was started. Long-term follow-up and interproximal enamel reduction of the primary molar led to the mandibular canine eruption and prevented malalignment. This report highlights the importance of a comprehensive approach to managing supernumerary teeth through timely extraction and space maintenance to facilitate proper permanent tooth eruption.