1. Treatment of irregularity of the permanent or adult teeth;Angell;Dent Cosmos,1860
2. Rapid expansion of the maxillary dental arch and nasal cavity by opening the midpalatal suture;Haas;Angle Orthod,1961
3. Maxillary adaptation to expansion in the mixed dentition;Spillane;Semin Orthod,1995
4. Treatment timing for rapid maxillary expansion;Baccetti;Angle Orthod,2001
5. Transverse dimension and long-term stability;Vanarsdall;Semin Orthod,1999