Comparison of the coefficient of friction of different self ligating brackets
OA Version
Citation
Abstract
Objective: To compare the coefficient of friction of various self-ligating brackets available in the market when nickel titanium archwire is drawn through them.
Materials and Methods: 6 different bracket types - Damon 3, Smart Clip, Opal, InOvation R, Time 2 and SPEED were tested by sliding a .018 size Nickel-Titanium wire through them. Each bracket sample consisted of 12 brackets and each one of the 12 brackets was tested 3 times for accuracy of measurements. A repeated measures analysis of variance and Tukey test was used to analyze the data.
Results: There was a significant difference between the coefficient of friction of the six brackets with Damon 3 having the lowest coefficient of friction and SPEED having the highest values. The brackets ranked from the lowest to highest friction values as follows: Damon 3 [less than] Smart Clip [less than] Opal [less than] Time 2 [less than] InOvation R [less than] SPEED. Tests also showed that the composition of the bracket or the surface roughness of the bracket slot was not directly related to the difference in the coefficient of friction between the different brackets.
Conclusion: Although there is a statistically significant difference between the different bracket types, the values are too small to be clinically significant.
Description
Thesis (MSD)--Boston University, Goldman School of Dental Medicine, 2007 (Dept. of Orthodontics).
Includes bibliography: leaves 60-65.
Includes bibliography: leaves 60-65.
License
This work is being made available in OpenBU by permission of its author, and is available for research purposes only. All rights are reserved to the author.