The supernumerary tooth which is extra tooth in comparison to normal dentition is one of the developmental problems. The most common type of supernumerary tooth is mesiodens which may cause several complications like delayed eruption, crowding, spacing et al. Moral Incisor Hypomineralization (MIH) describes the clinical appearance of enamel hypomineralization of systemic origin affecting one or more permanent first molars that associated frequently with affected incisors. We report a case of a 6 – year – old boy who visited our clinic for removal of mesiodentes. The patient was diagnosed by mesiodentes and MIH by clinical examination and radiographic examination. Under local anesthesia, Mesiodentes were removed surgically. The demarcated opacities, a feature of MIH, were observed in the removed mesiodentes. After removal of mesiodentes, the maxillary central incisors erupted normally and in order to manage the teeth affected MIH, follow-up and fluoride varnish application were done every 3 months.

Abstract
 Ⅰ. INTRODUCTION
 Ⅱ. CASE REPORT
 Ⅲ. DISCUSSION
 REFERENCES

• 배상용(원광대학교 치과대학 소아치과학교실) | Sangyong Bae (Department of Pediatric Dentistry and Research Institute of Dental Education, College of Dentistry, Wonkwang University)
• 라지영(원광대학교 치과대학 소아치과학교실) | Jiyoung Ra (Department of Pediatric Dentistry and Research Institute of Dental Education, College of Dentistry, Wonkwang University)
• 이제우(원광대학교 치과대학 소아치과학교실) | Jewoo Lee (Department of Pediatric Dentistry and Research Institute of Dental Education, College of Dentistry, Wonkwang University) Correspondence