Explain, in short, why heat treatment is sometimes used in stress relieving stainless steel orthodontic wire.
Heat treatment is generally applied to orthodontic stainless steel wires to relieve the stresses that result from their manipulation by orthodontists. The quality and thickness of the oxide films formed on the surface of heat-treated wires can vary, and it is believed that these oxide films can influence the properties of heat-treated wires. It is also used to improve the wires elasticity, stability of the dislocations and the shape of the wire.
Monday, October 8, 2012
Chums Bezana - DMaterials
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Once again, what reference did you use.
ReplyDeleteKapila S and Sachdeva R, Mechanical properties and clinical applications of orthodontic wire.
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Chuma Bezana
ReplyDeleteMaterials
1. Explain, in short, why heat treatment is sometimes used in stress relieving stainless steel orthodontic wire.
Heat treatment is generally applied to orthodontic stainless steel wires to relieve the stresses that result from their manipulation by orthodontists, e.g. after bending wires into an arch, loops, or coils. The quality and thickness of the oxide films formed on the surface of heat-treated wires can vary, and it is believed that these oxide films can influence the properties of heat-treated wires. It is also used to improve the wires elasticity, stability of the dislocations and the shape of the wire. The recommended temperature-time schedule for stress-relieving stainless steel is 750O F (399OC) for 11 minutes.
Kapila, S., & Sachdeva,R. 1989. Mechanical properties and clinical applications of orthodontic wires. American Journal of Orthodontics and Dentofacial Orthopaedics. 96(1):102.
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ReplyDeleteChuma Bezana
ReplyDeleteMaterials
1. Explain, in short, why heat treatment is sometimes used in stress relieving stainless steel orthodontic wire.
Heat treatment is generally applied to orthodontic stainless steel wires to relieve the stresses that result from their manipulation by orthodontists, e.g. after bending wires into an arch, loops, or coils. The quality and thickness of the oxide films formed on the surface of heat-treated wires can vary, and it is believed that these oxide films can influence the properties of heat-treated wires. It is also used to improve the wires elasticity, stability of the dislocations and the shape of the wire. The recommended temperature-time schedule for stress-relieving stainless steel is 750 degrees F (399 degrees C) for 11 minutes.
Kapila, S., & Sachdeva,R. 1989. Mechanical properties and clinical applications of orthodontic wires. American Journal of Orthodontics and Dentofacial Orthopaedics. 96(1):102.