Static friction between stainless steel wire and bracket ligated with elastomeric ligature fabricated from epoxidized natural rubber

Authors

Warintra Udtamapanya
Vachara Phetcharakupt
Nushanad Na Ranong

Publication Date

2013-01-01

Abstract

Objective To compare the static frictional forces between stainless steel wire and bracket ligated with elastomeric ligatures fabricated from 4 formulations of epoxidized natural rubber, and 3 different cross section configurations. Materials and methods The 0.016 x 0.022 inch stainless steel wire was used with the 0.018 x 0.025 inch slot first premolar standard edgewise stainless steel bracket, and ligated with elastomeric ligatures fabricated from 4 formulations of epoxidized natural rubber, which were epoxidized natural rubber without silica, with 30% silica, with 45% silica, and with 55% silica. Each formulation had 3 different cross section configurations, which were round, eclipse and rectangular. The static frictional force was measured by using the Shimadzu Universal Testing Machine. One-way analysis of variance and multiple comparisons with Tamhaneûs T2 were used to analyze the difference of the static frictional force between groups at the statistically significant level of 0.05 Results Elastomeric ligature fabricated from epoxidized natural rubber without silica group showed the lowest static frictional force followed by the 30% silica, 45% silica, and 55% silica groups respectively. For the cross section configuration, the round groups showed the lowest static frictional force followed by the eclipse and rectangular groups respectively. There were statistically significant differences of static frictional force among all groups at the significance level of 0.05, except for the round and eclipse groups. Conclusion The static frictional force was significantly greater when the percentage of silica in elastomeric ligature fabricated from epoxidized natural rubber increased. For cross section configuration, the rectangular groups produced significantly higher static frictional force than the eclipse and round groups. However, there was no statistically significant difference between the eclipse and the round groups.

DOI

10.58837/CHULA.CUDJ.36.1.3

First Page

21

Last Page

30

Recommended Citation

Udtamapanya, Warintra; Phetcharakupt, Vachara; and Na Ranong, Nushanad (2013) "Static friction between stainless steel wire and bracket ligated with elastomeric ligature fabricated from epoxidized natural rubber," Chulalongkorn University Dental Journal: Vol. 36: Iss. 1, Article 3.
DOI: 10.58837/CHULA.CUDJ.36.1.3
Available at: https://digital.car.chula.ac.th/cudj/vol36/iss1/3