1. Early treatment of dental arch problems: I. space maintenance, space regaining;Ghafari;Quint Int,1986
2. Contemporary orthodontics;Proffit,1993
3. The effect of the passive lingual archwire on the lower denture;Singer;Angle Orthod,1974
4. Physiological tooth migration and its significance for the development of occlusion;Baume;J Dent Res,1950
5. Dentistry for the child and adolescent;McDonald,1978