A Simplified Spring winder For Clinical Application

Introduction: The fabrication of coils using heavy gauge stainless steel wire for use in appliances such as the Churro Jumper can be a tedious task and can often result in spaced coils that lead to more flexibility than can be desired, leading to a decreased force application and hence overall lengthened treatment time. Using well placed, tightly adherent coils the force of which can be controlled by placement of the desired number of coils can help to mitigate this shortcoming. Technique: The spring winder described here is easy to fabricate using easily available stationary articles which can be repurposed to form an efficient winder that can coil springs with reduced effort as compared to that would have been required when using orthodontic pliers only. The stationary repurposed for this winder is the electric etching pen which provides a good framework for fabricating the winder. In addition, clear acrylic is used along with a syringe body to hold the winding components. The syringe is filled up with clear acrylic and winding rods are laid down within the acrylic which holds it firmly in place. In addition, the syringe body is embedded into the electric pen handle which allows for easy turning the winder so as to exert effective force while reducing operator effort and fatigue. This also allows for winding of heavy gauge orthodontic wire with little effort. Conclusion: A simplified spring winder can be best indicated for the fabrication of coils for fixed functional appliances like Churro Jumper.

Research and Application of Work Roll Contour Technology on Thin Gauge Stainless Steel in Hot Rolling

Shape control is the key technology for thin gauge stainless steel in hot rolling. Because of high rolling force, work roll can suffer from serious uneven wears, edge drop of strip temperature and so on. And in turn these imperfections lead to defects in thin gauge stainless steel production, such as big crown value, quarter wave, edge profile anomalies, poor rolling stability. In order to improve shape the control ability, one will have to eliminate the quarter wave, make roll wear uniform, increase rolling stability in the thin gauge stainless steel production, use high performance variable crown technology in upstream stands, use mixed variable crown technology in last stand, and use conventional work roll with variable shifting stroke strategy in other downstream stands. The above technologies have been successfully applied in several stainless steel productions, which have completely independent intellectual property rights, and the crown control precision of thin gauge stainless is 98.1%, flatness control precision is 97.5%, also a 1260 mm × 1.6 mm ultra-thin gauge stainless steel was successfully developed.

Single Tooth Intrusion simplified with New Removable Orthodontic Appliance: Report of Two Cases

ABSTRACT Intrusion of single anterior tooth done by fixed orthodontic appliance is a tedious procedure for orthodontist as well as for the patient which may be quite expensive and time consuming. The use of a new modified removable orthodontic appliance is illustrated in two case reports in this article which is especially beneficial for such cases. This removable appliance is comprised of a labial bow of 21 gauge stainless steel wire with soldered high labial bow of 19 gauge stainless steel wire which has a soldered hook permitting the use of elastic. Adams clasp and pinhead clasps are used for retention of the appliance. During intrusive force application, one component is for intrusion of tooth and other component is for labial movement. This appliance is fabricated in such a manner that the labial movement is prevented by labial component of wire and is converted into pure intrusive force as much as possible. Force levels used for tooth movement are kept within physiologic limits while using this appliance. A though, this appliance is advantageous over fixed orthodontics due its simpler and quicker chair-side procedure and low cost of treatment associated with patient comfort, patient co-operation is must for the success of this therapy. How to cite this article Mittal AK, Sharma R, Garg P, Sidana A. Single Tooth Intrusion simplified with New Removable Orthodontic Appliance: Report of Two Cases. World J Dent 2014;5(4):232-236.