The influence of different ligature materials on frictional coefficient of slided bracket on arch wire

Abstract EN

Aims : To evaluate the frictional coefficients of different ligature materials with combination of stainless steel arch wire and bracket.

Materials and methods: Ten ligatures were used for each of stainless steel, elastotomeric and teflon utilized with stainless steel arch wires and brackets.

A simulated half arch fixed apparatus was designed for measuring the static and kinetic frictional coefficient of the slide bracket incorporated with tensile testing machine.

The data were analyzed by using the descriptive and variance analyses of tests (ANOVA and Duncan’s Multiple Range test at p ≤ 0.05) to reveal the significant difference of the frictional coefficient among the three types of ligature materials.

Results : It was disclosed that the elastomeric ligature had a very highly significant increased mean value of the static and kinetic frictional coefficients as compared with other ligatures.

Conclusions: The elastomeric ligature is not recommended for use with sliding stainless steel bracket on the arch wire.