Surface roughness of orthodontic wires via atomic force microscopy, laser specular reflectance, and profilometry.

The surface roughness of orthodontic archwires is an essential factor that determines the effectiveness of arch-guided tooth movement. Using the non-destructive techniques of atomic force microscopy (AFM) and of laser specular reflectance, the surface roughness of 11 nickel-titanium orthodontic wires, a stainless steel and a beta-titanium wire was measured. The results were compared with those obtained using surface profilometry. The smoothest wire, stainless steel, had an optical roughness of 0.10 micron, compared with 0.09 micron from AFM and 0.06 from profilometry. The surface roughness for the beta-titanium wire measured by all three methods was approximately 0.21 micron, while that of the NiTi wires ranged from 0.10 to 1.30 microns. As the surface roughness not only affects the effectiveness of sliding mechanics, but also the corrosion behaviour and the aesthetics of orthodontic components, the manufacturers of orthodontic wires should make an effort to improve the surface quality of their products.

[1]  R P Kusy,et al.  Comparison of the frictional coefficients for selected archwire-bracket slot combinations in the dry and wet states. , 2009, The Angle orthodontist.

[2]  R P Kusy,et al.  Surface roughness of orthodontic archwires via laser spectroscopy. , 2009, The Angle orthodontist.

[3]  G. Andreasen,et al.  A use hypothesis for 55 Nitinol wire for orthodontics. , 2009, The Angle orthodontist.

[4]  R P Kusy,et al.  Zirconia brackets: an evaluation of morphology and coefficients of friction. , 1994, American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics.

[5]  D Drescher,et al.  Frictional forces between bracket and arch wire. , 1989, American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics.

[6]  R. Kusy,et al.  Effects of sliding velocity on the coefficients of friction in a model orthodontic system. , 1989, Dental materials : official publication of the Academy of Dental Materials.

[7]  Y. Kuk,et al.  Scanning tunneling microscope instrumentation , 1989 .

[8]  R. Kusy,et al.  Effects of cold disinfectants on the mechanical properties and the surface topography of nickel-titanium arch wires. , 1988, American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics.

[9]  F. Miura,et al.  The super-elastic Japanese NiTi alloy wire for use in orthodontics. Part III. Studies on the Japanese NiTi alloy coil springs. , 1988, American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics.

[10]  R. Kusy,et al.  Polishing porcelain veneers: an SEM and specular reflectance analysis. , 1988, Dental materials : official publication of the Academy of Dental Materials.

[11]  R. Kusy,et al.  Effects of sterilization on the mechanical properties and the surface topography of nickel-titanium arch wires. , 1988, American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics.

[12]  R. Kusy,et al.  Surface roughness of stainless steel and electroformed nickel standards using a HeNe laser , 1987 .

[13]  B K Moore,et al.  A comparison of frictional forces during simulated canine retraction of a continuous edgewise arch wire. , 1986, American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics.

[14]  R. Kusy,et al.  Surface roughness of a dental amalgam via a laser scattering test. , 1985, Dental materials : official publication of the Academy of Dental Materials.

[15]  G. Andreasen,et al.  A comparison of friction resistance for Nitinol and stainless steel wire in edgewise brackets. , 1982, Quintessence international, dental digest.

[16]  G. Binnig,et al.  Tunneling through a controllable vacuum gap , 1982 .

[17]  T. Vorburger,et al.  Optical techniques for on-line measurement of surface topography , 1981 .

[18]  L. H. Tanner,et al.  A comparison between talysurf 10 and optical measurements of roughness and surface slope , 1979 .

[19]  J. C. Leader,et al.  Comments on the evaluation of the irradiance of reflected light from rough surfaces , 1977 .

[20]  J. Bennett,et al.  Measurement of the rms roughness, autocovariance function and other statistical properties of optical surfaces using a FECO scanning interferometer. , 1976, Applied optics.

[21]  L. Tanner,et al.  The use of laser ligth in the study of metal surfaces , 1976 .

[22]  L. H. Tanner,et al.  A study of the surface parameters of ground and lapped metal surfaces, using specular and diffuse reflection of laser light , 1976 .

[23]  J. Perrin,et al.  Optical surface roughness determination using speckle correlation technique. , 1975, Applied optics.

[24]  Robert A. Sprague,et al.  Surface roughness measurement using white light speckle. , 1972, Applied optics.

[25]  D. Hensler,et al.  Light scattering from fused polycrystalline aluminum oxide surfaces. , 1972, Applied optics.

[26]  K. Vedam,et al.  Characterization of real surfaces by ellipsometry , 1972 .

[27]  Robert B. Crane,et al.  Use of a Laser-Produced Speckle Pattern to Determine Surface Roughness* , 1970 .

[28]  J. V. Gilfrich,et al.  Effect of Low‐Temperature Phase Changes on the Mechanical Properties of Alloys near Composition TiNi , 1963 .

[29]  H. E. Bennett,et al.  Relation between Surface Roughness and Specular Reflectance at Normal Incidence , 1961 .

[30]  H. Kumar Wickramasinghe,et al.  Scanning probe microscopy: Current status and future trends , 1990 .

[31]  F. Miura.  The superelastic property of the Japanese NiTi alloy wire for use in orthodontics - Part 3. Studies on the Japanese NiTi alloy coil springs - , 1988 .

[32]  Gerber,et al.  Atomic Force Microscope , 2020, Definitions.

[33]  R. Kusy,et al.  In situ replication techniques: II. Quantitative methodologies for replicate materials. , 1985, Journal of biomedical materials research.

[34]  J. Bennett,et al.  Relation between the angular dependence of scattering and the statistical properties of optical surfaces , 1979 .

[35]  Toshimitsu Asakura,et al.  Measurement of surface roughness properties by means of laser speckle techniques , 1976 .

[36]  J. P. Vidosic.  Metal Machining and Forming Technology , 1964 .