Frictional resistance of aesthetic brackets

الملخص EN

Background : The aim of this study was to evaluate and compare the static frictional forces produced by monocrystalline ceramic (sapphire) bracket and polycrystalline ceramic bracket.

Materials and methods : One hindered twenty brackets / segment of archwire combinations were used, each bracket / segment of archwire combination was tested 10 times.

The tests were performed in a universal testing Instron machine.

The data was submitted to in depended t-test.

Results : The independent sample t-tests showed a highly significant difference in the static frictional forces between monocrystalline ceramic (sapphire) bracket and polycrystalline ceramic bracket.

Conclusion : According to the biomechanical result gained from the present study, the monocrystalline ceramic (sapphire) brackets produced lower static friction level than polycrystalline ceramic bracket.