교정선의 종류, 결찰방법, 타액의 유무에 따른 마찰력의 비교연구
A comparative study of frictional forces according to orthodontic wires and ligation method under dry and wet conditions
한정숙, 명나혜, 이재환,
소속 상세정보
한정숙 ( ) - 단국대학교 치과대학 교정학교실
명나혜 ( ) - 단국대학교 치과대학 교정학교실
이재환 ( ) - 단국대학교 치과대학 교정학교실
KMID : 0361920010310020271
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 i9 -Ti(highest) - with the exception of elastomeric ligation under wet conditions.
2. S.S. ligation gave r se 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_ 8 -Ti. but, increased the frictional force for S.S. ligation with .016" X .022" Co-Cr, Ni-Ti, /
-Ti.
4. .016" X.022 " wire generated more friction than .016" wire.
키워드
마찰력;타액;교정선;결찰재;Frictional force;Saliva;archwire;Ligation material
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