Original Article

Comparison of Tie Wing Fracture Resistance of Differing Ceramic Brackets

10.5152/TurkJOrthod.2022.21209

  • Mary Kate James
  • Qingzhao Yu
  • Htwe Mon
  • Xiaoming Xu
  • Alli Blanchard
  • Paul Armbruster
  • Richard W. Ballard

Received Date: 06.10.2021 Accepted Date: 11.02.2022 Turk J Orthod 2022;35(4):255-259

Objective:

The aim of this study was to compare the tie wing fracture resistance of 4 different manufacturers’ ceramic brackets currently on the market.

Methods:

The tie wings of ceramic brackets from 4 manufacturers were tested with 10 samples in each group. The brackets were Ormco Symetri, 3M Clarity, American Radiance Plus, and Dentsply Ovation S. The brackets were mounted and fixed in a universal testing machine. A stainless steel ligature wire was looped around a tie wing and the mean tensile strength was both tested and recorded.

Results:

There was a significant overall difference in tensile strength among the 4 groups (P < .0001) with the 3M Clarity brackets having the highest MPa. When the groups were compared to each other, they also showed a significant difference in mean tensile strength with the exception being the American Radiance Plus and Ormco Symetri brackets.

Conclusion:

Test results concluded that the 3M Clarity brackets had the highest resistance to tie wing fracture, while the Dentsply Ovation S brackets had the lowest resistance.

Keywords: Fracture resistance, ceramic orthodontic brackets, tie wing fracture, monocrystalline, polycrystalline