A comparative study of frictional forces according to orthodontic wires and ligation method under dry and wet conditions.
- Author:
Jung Suk HAN
1
;
Jin Woo LEE
;
Kyung Suk CHA
Author Information
1. Department of Orthodontics, College of Dentistry, Dankook University, Korea. www.anseo.dankook.ac.kr /~dankor /
- Publication Type:Comparative Study ; Original Article
- Keywords:
Frictional force;
Saliva;
archwire;
Ligation material
- MeSH:
Alloys;
Elastomers;
Friction*;
Jurisprudence;
Ligation*;
Orthodontic Wires*;
Saliva;
Saliva, Artificial;
Steel
- From:Korean Journal of Orthodontics
2001;31(2):271-281
- CountryRepublic of Korea
- Language:Korean
-
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.
