1. Hypodontia in 9-year-old Norwegiansrelated to need of orthodontic treatment;Aasheim;Scand JDent Res,1993
2. Bulky maxillary central incisor;Abramovitch;Gen Dent,1989
3. Bilateral double primary molars: case report;ACS;Pediatr Dent,1992
4. Multiple supernumerary teeth and possibleimplications;Acton;Aust Dent J,1987
5. Die Agenesie desWeisheitszahnes;Adler;Dtsch Zahnarztl Z,1963