pISSN 2234-7518
eISSN 2005-372X

Table. 3.

Comparisons of coefficients of friction among different combinations of coated and uncoated brackets and nickel–titanium (NiTi) and stainless steel (SS) archwires

Bracket (B) & arch wire (NiTi, SS) combination Sample size Control Coating material
Uncoated Coated Al2O3 TiN CrN
B-NiTi 5 0.316 ± 0.029A
B-NiTi 5 0.238 ± 0.017B 0.399 ± 0.055A 0.443 ± 0.058C
B NiTi 5 0.400 ± 0.037C 0.446 ± 0.013C 0.505 ± 0.075C
NiTi B 5 0.251 ± 0.021B 0.331 ± 0.059A 0.324 ± 0.080A
B-SS 5 0.552 ± 0.074D
B-SS 5 0.207 ± 0.034E 0.372 ± 0.050EF 0.598 ± 0.168D
B SS 5 0.445 ± 0.169D 0.818 ± 0.420D 0.586 ± 0.142D
SS B 5 0.235 ± 0.072E 0.237 ± 0.066E 0.410 ± 0.244D

Values are presented as mean ± standard deviation.

Different letters indicate statistically significant (p < 0.05) differences between the subgroups within the group containing the same archwire and bracket combination (B-NiTi and B-SS).

Al2O3, alumina; TiN, titanium nitride; CrN, chromium nitride.

Korean J Orthod 2021;51:270~281 https://doi.org/10.4041/kjod.2021.51.4.270
© Korean J Orthod
Copyright © The Korean Association of Orthodontists. All Rights Reserved. / Powered by INFOrang Co., Ltd