A comparison of the static frictional forces between stainless steel brackets and various types of orthodontic wires at different angulations in the wet state

Authors

Pornpetch Rujitwattana
Vachara Phetcharakupt
Piyarat Apivatanagul

Publication Date

2008-05-01

Abstract

Objective To compare the static frictional forces measured in 37 ± 1 ÌC artificial saliva between stainless steel brackets and 4 types of orthodontic wires when the angulations between the brackets and the wires are 0, 1 and 2 degrees, respectively. Materials and methods The static frictional forces of the 0.018 inch slot canine standard edgewise brackets and 4 types of 0.016 x 0.022 inch wires which were stainless steel, Sentalloy® medium, Sentalloy® heavy and TMA® COLORTM (honeydew) were measured by using the Lloyd universal testing machine at the second-order angulations of 0, 1 and 2 degrees. The measurements were made in the artificial saliva at 37 ± 1 °C. Two-way ANOVA was used to test for significant differences of the static frictional forces among the groups of specimens at the significant level of .05. Results There was no difference in the static frictional forces between the brackets and the 4 wire groups when the second-order angulation was equal. However, the static frictional forces were increased when the second-order angulation increased. The significant difference was found when the angulation rose from 0 to 2 degrees only (p-value = .004, .028 and .002, respectively) except for the stainless steel wire group which the significant difference of the static frictional forces when the second-order angulation increased was not found. Conclusion There was no difference in the static frictional forces between the brackets and the 4 wire groups. However, except for the stainless steel group, the static frictional forces rose significantly when the second-order angulation increased from 0 to 2 degrees.

DOI

10.58837/CHULA.CUDJ.31.2.5

First Page

169

Last Page

178

Recommended Citation

Rujitwattana, Pornpetch; Phetcharakupt, Vachara; and Apivatanagul, Piyarat (2008) "A comparison of the static frictional forces between stainless steel brackets and various types of orthodontic wires at different angulations in the wet state," Chulalongkorn University Dental Journal: Vol. 31: Iss. 2, Article 5.
DOI: 10.58837/CHULA.CUDJ.31.2.5
Available at: https://digital.car.chula.ac.th/cudj/vol31/iss2/5