1 Professor, Tehran University of Medical Sciences, School of Dentistry, Department of Orthodontics
2 Assistant Professor, Tehran University of Medical Sciences, School of Dentistry, Department of Orthodontics
3 Orthodontist, Private practice
4 Post Graduate Student, Tehran University of Medical Sciences, School of Dentistry, Department of Orthodontics
Aim: previous designs like intrusion arch (Burstone) and Utility arch (Ricketts) to intrude anterior teeth in patients with deep bite had some advantageous, which required new consideration. The present study investigated new designs in making intrusion arch.
Materials and Methods: PATRAN and NASTRAN programs were used in this computerized simulation study. Burstone, Utility arch designs; proposed methods i.e. A and B were loaded in 11 different cross sections and in 3 situations.
Result: the results indicated a lower load-deflection rate in newly designed intrusion arches and a more appropriate condition for implementation of a light continues forces .otherwise, the extent and the type of this placement in posterior blocks due to intrusion arch reaction, were in better condition in new designs comparing with those impervious ones.
Conclusion: Considering the advantages of the proposed designs it seems that their implementation would lead to better results in incisor teeth intrusion.