TY - GEN
T1 - Effect of surface treatment on physical and mechanical properties of nickel-titanium orthodontic archwires by fine particle shot peening method
AU - Mongkolchart, Wittawat
AU - Santiwong, Peerapong
AU - Chintavalakorn, Rochaya
AU - Khantachawana, Anak
N1 - Publisher Copyright:
© 2019 Trans Tech Publications, Switzerland
PY - 2019
Y1 - 2019
N2 - Background: Surface treatment on metal can alter physical and mechanical properties. Understanding the physical and mechanical properties of the archwires is essential for the management of orthodontic treatment. Methods: This study used digital micrometer, universal testing machine, and surface hardness tester for measuring dimension, unloading force, and surface hardness of two different type of nickel-titanium (Ni-Ti) archwires: commercially available Ni-Ti (NT-N) and surface treated Ni-Ti by fine particle shot peening (FPSP) method (NT-F). Statistical analysis was undertaken using a paired T-test (α=0.05). Results: No significant difference was found on both vertical and horizontal dimensions of NT-N and NT-F (p= 1.00 and 0.796 respectively). For bending and surface hardness test, significance difference was found (p<0.001 and p<0.001 respectively). Conclusions: The NT-F archwire provided lower unloading force and surface hardness but there was no change in size when compared with NT-N.
AB - Background: Surface treatment on metal can alter physical and mechanical properties. Understanding the physical and mechanical properties of the archwires is essential for the management of orthodontic treatment. Methods: This study used digital micrometer, universal testing machine, and surface hardness tester for measuring dimension, unloading force, and surface hardness of two different type of nickel-titanium (Ni-Ti) archwires: commercially available Ni-Ti (NT-N) and surface treated Ni-Ti by fine particle shot peening (FPSP) method (NT-F). Statistical analysis was undertaken using a paired T-test (α=0.05). Results: No significant difference was found on both vertical and horizontal dimensions of NT-N and NT-F (p= 1.00 and 0.796 respectively). For bending and surface hardness test, significance difference was found (p<0.001 and p<0.001 respectively). Conclusions: The NT-F archwire provided lower unloading force and surface hardness but there was no change in size when compared with NT-N.
KW - Dimension
KW - Fine particle shot peening
KW - Orthodontic archwires
KW - Surface hardness
KW - Three-point bending
UR - http://www.scopus.com/inward/record.url?scp=85071017725&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/KEM.801.33
DO - 10.4028/www.scientific.net/KEM.801.33
M3 - Conference contribution
AN - SCOPUS:85071017725
SN - 9783035714913
T3 - Key Engineering Materials
SP - 33
EP - 38
BT - Composite Materials and Material Engineering III
A2 - Umemura, Kazuo
PB - Trans Tech Publications Ltd
T2 - 4th International Conference on Composite Materials and Materials Engineering, ICCMME 2019
Y2 - 19 January 2019 through 22 January 2019
ER -