The Resource The Effect of Simulated Oral Conditions on Surface Roughness and Friction Properties of Surface-treated and Non-surface Treated Nickel-Titanium Archwires : A Pilot Study, Mary Becker

The Effect of Simulated Oral Conditions on Surface Roughness and Friction Properties of Surface-treated and Non-surface Treated Nickel-Titanium Archwires : A Pilot Study, Mary Becker

Label
The Effect of Simulated Oral Conditions on Surface Roughness and Friction Properties of Surface-treated and Non-surface Treated Nickel-Titanium Archwires : A Pilot Study
Title
The Effect of Simulated Oral Conditions on Surface Roughness and Friction Properties of Surface-treated and Non-surface Treated Nickel-Titanium Archwires
Title remainder
A Pilot Study
Statement of responsibility
Mary Becker
Creator
Contributor
Author
Degree supervisor
Subject
Genre
Language
eng
Summary
This study examined the effect of simulated oral conditions (storage in phosphate-buffered saline (PBS) with bracket-related load deflection at 37±1°C for 12 weeks) on surface-treated and non-surface treated NiTi archwires. Three types of NiTi wires were tested: non-coated NiTi wire, nitrogen-treated NiTi wire, and rhodium-coated NiTi wire. Wire segments from each NiTi wire type underwent surface roughness measurements and friction testing in the as-received condition (control group) and following exposure to a simulated oral environment for 12 weeks (experimental treatment group). A profilometer was used to measure average roughness in three areas of each wire segment. After profilometry, a universal mechanical tester was used for friction testing. Each wire segment was pulled through a bracket in a passive configuration for 5 mm and the minimum, maximum, and mean of the top 10% of the load was calculated. Three representative specimens from each NiTi wire type in each condition were viewed using scanning electron microscopy (SEM) to provide qualitative surface topography analysis. Results of the study showed that all wires stored in simulated oral conditions (PBS at 37±1°C with bracket-related load deflection) were significantly rougher (p < 0.05) than their counterparts in the as-received condition. Rhodium-coated wires were found to be significantly rougher (p < 0.05) than nitrogen-treated and non-coated NiTi wires across conditions (as received or following exposure to simulated oral conditions). All wires stored in simulated oral conditions also showed significantly increased friction forces (p < 0.05) following exposure to simulated oral conditions when compared to as-received counterparts. There was not a significant correlation (p > 0.05) between changes in surface roughness and associated friction. All wires stored in simulated oral conditions exhibited a more irregular surface topography than their as-received counterparts. Non-coated and nitrogen-treated wires showed increased particulate exposure and pitting corrosion after storage in simulated oral conditions, but only at higher magnification (1000x and 4000x). Rhodium-coated wires had the most irregular surface in both the as-received condition and following exposure to simulated oral conditions. Rhodium-coated wires also exhibited significant coating breakdown and loss at all magnifications (200x, 1000x, and 4000x) after storage in simulated oral conditions
Cataloging source
UMK
http://library.link/vocab/creatorDate
1990-
http://library.link/vocab/creatorName
Becker, Mary
Degree
Ph.D.
Dissertation note
(School of Dentistry).
Dissertation year
2019.
Granting institution
University of Missouri-Kansas City,
Illustrations
illustrations
Index
no index present
Literary form
non fiction
Nature of contents
  • dictionaries
  • bibliography
  • theses
http://library.link/vocab/relatedWorkOrContributorDate
1957-
http://library.link/vocab/relatedWorkOrContributorName
  • Walker, Mary P.
  • Nickel, Jeffrey C.
http://library.link/vocab/subjectName
  • Orthodontics
  • Orthodontic appliances
  • Orthodontics
  • Orthodontic Appliances
Label
The Effect of Simulated Oral Conditions on Surface Roughness and Friction Properties of Surface-treated and Non-surface Treated Nickel-Titanium Archwires : A Pilot Study, Mary Becker
Instantiates
Publication
Copyright
Note
  • "A thesis in Oral and Craniofacial Sciences."
  • Advisors: Mary P. Walker, and Jeffrey Nickel
  • Vita
Antecedent source
not applicable
Bibliography note
Includes bibliographical references (pages 55-60)
Carrier category
online resource
Carrier category code
  • cr
Carrier MARC source
rdacarrier
Color
black and white
Content category
text
Content type code
  • txt
Content type MARC source
rdacontent
Contents
Introduction -- Materials and methods -- Results -- Discussion -- Conclusions -- Literature cited -- Appendix 1 -- Appendix 2 -- Appendix 3
Control code
1132292854
Dimensions
unknown
Extent
1 online resource (71 pages)
File format
one file format
Form of item
online
Level of compression
mixed
Media category
computer
Media MARC source
rdamedia
Media type code
  • c
Other physical details
illustrations.
Quality assurance targets
not applicable
Specific material designation
remote
System control number
(OCoLC)1132292854
System details
  • The full text of the thesis is available as an Adobe Acrobat .pdf file; Adobe Acrobat Reader required to view the file
  • Mode of access: World Wide Web
Label
The Effect of Simulated Oral Conditions on Surface Roughness and Friction Properties of Surface-treated and Non-surface Treated Nickel-Titanium Archwires : A Pilot Study, Mary Becker
Publication
Copyright
Note
  • "A thesis in Oral and Craniofacial Sciences."
  • Advisors: Mary P. Walker, and Jeffrey Nickel
  • Vita
Antecedent source
not applicable
Bibliography note
Includes bibliographical references (pages 55-60)
Carrier category
online resource
Carrier category code
  • cr
Carrier MARC source
rdacarrier
Color
black and white
Content category
text
Content type code
  • txt
Content type MARC source
rdacontent
Contents
Introduction -- Materials and methods -- Results -- Discussion -- Conclusions -- Literature cited -- Appendix 1 -- Appendix 2 -- Appendix 3
Control code
1132292854
Dimensions
unknown
Extent
1 online resource (71 pages)
File format
one file format
Form of item
online
Level of compression
mixed
Media category
computer
Media MARC source
rdamedia
Media type code
  • c
Other physical details
illustrations.
Quality assurance targets
not applicable
Specific material designation
remote
System control number
(OCoLC)1132292854
System details
  • The full text of the thesis is available as an Adobe Acrobat .pdf file; Adobe Acrobat Reader required to view the file
  • Mode of access: World Wide Web

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