PERBANDINGAN BESAR FRIKSI ANTARA EMPAT MACAM BRAKET STAINLESS STEEL BARU DAN DAUR ULANG



Taufik Nur Alamsyah(1*), Sri Suparwitri(2), Prihandini Iman(3)

(1) Ortodonsia
(2) Ortodonsia
(3) Ortodonsia
(*) Corresponding Author

Abstract


The using of recycled stainless steel brackets was frequently performed by clinicians to reduce cost rather than using new stainless steel brackets. Burning process during preparation of recyled stainless steel brackets may decrease bracket’s resistance to corrosion and cause pit and scracth-like surface roughness. These two conditions may lead to increasing friction of the bracket.
The Aim of this study was to investigate friction force between new and recycled stainless steel brackets. 96 Maxillary incisor Roth stainless steel brackets Slot 0.022” from four different brands were used in this study. The brackets were grouped
according to the brand and type (new and recycled). The brackets were attached to metal ruler. A 10 cm 0.018”x 0.022” straight wire was placed on the brackets and then ligated with power o. Friction force was measured by Universal Testing Machine. Data from the study was analysed statistically with Two Way ANOVA.
The result of this study showed that mean friction force of recycled stainless steel brackets was higher than mean friction force of new stainless steel brackets and it have interaction between new and recycled stainless steel brackets. It is concluded
that there were 28,9% increasing of friction force between new and recycled stainless steel brackets.

Keywords


Roth stainless steel bracket, recycle, burning, friction

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