1. Uprighting mesially inclined mandibular second molars with a modified uprighter jet;Gracco;J Clin Orthod,2007
2. Uprighting of lower molars;Melsen;J Clin Orthod,1996
3. Molar uprighting with crossed tipback springs;Weiland;J Clin Orthod,1992
4. Molar uprighting as an adjunct to fixed prosthesis;Norton;J Am Dent Assoc,1968
5. Molar uprighting with T-loop springs;Tuncay;J Am Dent Assoc,1980