Publication: Determination of surface and subsurface fatigue damage in dental composites
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Issued Date
2010
Resource Type
File Type
application/pdf
ISSN
431648
Other identifier(s)
2-s2.0-77951128635
Rights Holder(s)
มหาวิทยาลัยศรีนครินทรวิโรฒ
Bibliographic Citation
Wear. Vol 268, (2010), p.1483-1489
Suggested Citation
Padipatvuthikul P., Jarad F.D., Mair L. Determination of surface and subsurface fatigue damage in dental composites. Wear. Vol 268, (2010), p.1483-1489. doi:10.1016/j.wear.2010.02.025 Retrieved from: https://hdl.handle.net/20.500.14740/7580
Author(s)
Abstract
Dental filling materials are subjected to cyclic compression in the mouth. Nine resin-based composite filling materials were subjected to 2000 compression cycles between either 0 and 12 kg, or 0 and 40 kg. Surface deformation was measured as the diameter of the compression scar and surface microhardness determined by a Vickers' microhardness test at 4 sites around the scar. Subsurface damage was stained with silver nitrate and the area of stain determined by image analysis software. Subsurface microhardness was measured at 4 sites around the stained zone. Surface deformation at 12 kg was inversely proportional to the surface microhardness at 12 kg. At both loads subsurface damage was directly proportional to the subsurface microhardness. Samples with small filler particles experienced less subsurface damage than those with larger particles. Silver nitrate staining was found to be a useful method for identifying subsurface damage. © 2010 Elsevier B.V. All rights reserved.
Subject(s)
Composites
Cyclic compression
Dental filling
Fatigue
Filler particles
Filling materials
Image analysis software
Microhardness tests
Resin-based composite
Silver nitrates
Sub-surface damage
Surface deformation
Surface microhardness
Vickers
Deformation
Dental composites
Dental prostheses
Dentistry
Filling
Image analysis
Microhardness
Resins
Silver
Silver alloys
Surfaces
Fatigue damage
Cyclic compression
Dental filling
Fatigue
Filler particles
Filling materials
Image analysis software
Microhardness tests
Resin-based composite
Silver nitrates
Sub-surface damage
Surface deformation
Surface microhardness
Vickers
Deformation
Dental composites
Dental prostheses
Dentistry
Filling
Image analysis
Microhardness
Resins
Silver
Silver alloys
Surfaces
Fatigue damage