Korean J Orthod.  2001 Apr;31(2):271-281.

A comparative study of frictional forces according to orthodontic wires and ligation method under dry and wet conditions

• Han JS
• Lee JW
• Cha KS

Abstract

The purpose of this study was fourfold - to evaluate the general laws of friction applied to orthodontic conditions, to compare archwire materials under these controlled conditions, to compare ligation method, and to measure the effect of the artificial saliva on friction with these materials Three wire alloys (Cobalt-chromium, Nickel-titanium, Beta-titanium) in two size wires (.016", .016"x.022") were examined respect to the bracket (.018"x.025" standard), and two ligature material (stainless steel, elastomeric) in dry and wet conditions The results were as follows, 1. The order of frictional force against alloy materials was Co-Cr (lowest), Ni-Ti, and beta-Ti(highest) - with the exception of elastomeric ligation under wet conditions. 2. S.S. ligation gave rise to significantly greater friction than elastomeric ligation did. 3. Testing in the presence of saliva, rather than in dry conditions, decreased the frictional force for S.S. ligation with .016" Co-Cr, Ni-Ti,beta-Ti. but, increased the frictional force for S.S. ligation with .016"x .022" Co-Cr, Ni-Ti, beta-Ti. 4. .016"x.022 "wire generated more friction than .016" wire.

Keyword

Frictional force; Saliva; archwire; Ligation material

MeSH Terms

Alloys
Elastomers
Friction*
Jurisprudence
Ligation*
Orthodontic Wires*
Saliva
Saliva, Artificial
Steel
Alloys
Elastomers
Saliva, Artificial
Steel