1. 5) Menardía-Pejuan V, Berini-Aytés L, et al : Supernumerary molars. A review of 53 cases. Bull Group Int Rech Sci Stomatol Odontol 42: 101-105, 2000.
2. 7) So LL : Unusual supernumerary teeth. Angle Ortho 60: 289-292, 1990.
3. 11) Shimizu T, Shimizu Y, et al : Four supernumerary molars in one maxillary quadrant: A case report. Pediatric Dent J 22: 198-201, 2012.
4. 19) Rena N.D, Thomas Å, et al : Cbfa1 is required for epithelial-mesenchymal interaction regulation tooth development in mice. Development 126: 2911-2920, 1999.