1. Prevalence of malocclusion and orthodontic treatment need in the United States: estimates from the NHANES III survey;Proffit WR;Int J Adult Orthodon Orthognath Surg.,1998
2. Maxillary protraction: Treatment and posttreatment effects
3. Changes following the use of protraction headgear for early correction of Class III malocclusion;Chong YH;Angle Orthod.,1996
4. Clinical results of the maxillary protraction in Korean children
5. Treatment effect of combined maxillary protraction and chincap appliance in severe skeletal Class III cases