Metal strength of direct bonding brackets.

Authors :: Matasa CG
Source :: American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics [Am J Orthod Dentofacial Orthop] 1998 Mar; Vol. 113 (3), pp. 282-6.
Publication Year :: 1998
Abstract: Because the strength of direct bonding brackets is both important and difficult to measure, a related property, microhardness, has been investigated. Twelve popular U.S. brands of direct bonding brackets have been tested with a Vickers-Hanemann microhardness apparatus. The tests have shown a consistently wide difference in hardness between brands, the highest values being exhibited by those using the precipitation hardened steel known as PH 17-4, and the lowest by those using the austenitic 316L. As the first steel proved to be significantly less corrosion resistant than the last one, it seems that today there are too few attachments that are both strong and chemically resistant.

Subjects :: Analysis of Variance
Chemical Phenomena
Chemistry, Physical
Confidence Intervals
Corrosion
Hardness
Humans
Materials Testing
Orthodontic Appliance Design
Stress, Mechanical
Dental Alloys chemistry
Dental Bonding methods
Orthodontic Brackets
Steel chemistry

Language :: English
ISSN :: 0889-5406
Volume :: 113
Issue :: 3
Database :: MEDLINE
Journal :: American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics
Publication Type :: Academic Journal
Accession number :: 9517719
Full Text :: https://doi.org/10.1016/s0889-5406(98)70298-7