1. Nonextraction treatment;Cetlin;J Clin Orthod,1983
2. Non extraction short-term arch changes;Ferro;Prog Orthod,2004
3. The effects of lip bumper therapy in the mixed dentition;Davidovitch;Am J Orthod Dentofacial Orthop,1997
4. The effect of the mandibular lip bumper and maxillary bite plate on tooth movement, occlusion and space conditions in the lower dental arch;Bjerregaard;Eur J Orthod,1980
5. Lip bumper therapy for gaining arch length;Nevant;Am J Orthod Dentofacial Orthop,1991