In:
Key Engineering Materials, Trans Tech Publications, Ltd., Vol. 330-332 ( 2007-2), p. 1255-1258
Abstract:
The friction and wear behavior of dental ceramics (Vita VMK95) against uniform Si3N4
balls has been investigated using a small amplitude reciprocating apparatus under simulated oral conditions. The variables of ball radii (2mm, 6 mm, 13mm, and 21mm), load (10N, 20N, 30N, and
40N), reciprocating amplitude (200(m), frequency (2Hz) and use of artificial saliva lubrication or no lubrication were selected. Tests lasting up to 10,000 cycles were conducted. The wear scars of the
samples were characterized with 3-D con focused laser-scanning microscope. The wear depths were analyzed statistically. The correlations between the wear behaviors and antagonist radii were also
compared. The results show the friction coefficient of dental porcelain goes up with the decreasing of antagonist radii, and the wear depth decreases with the antagonist diameters. Load and lubrication
effect is significant for friction coefficient and wear depth. The friction and wear mechanism of dental ceramics was characterized by abrasive wear and delaminating.
Type of Medium:
Online Resource
ISSN:
1662-9795
DOI:
10.4028/www.scientific.net/KEM.330-332
DOI:
10.4028/www.scientific.net/KEM.330-332.1255
Language:
Unknown
Publisher:
Trans Tech Publications, Ltd.
Publication Date:
2007
detail.hit.zdb_id:
2073306-9
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