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Inverse Correlations Between Wear and Mechanical Properties in Biphasic Dental Materials with Ceramic Constituents
- Source :
- J Mech Behav Biomed Mater
- Publication Year :
- 2020
-
Abstract
- The objective of this study is to elucidate the interdependence of competing mechanical degradation processes in biphasic dental materials with ceramic constituents in the region of high-pressure occlusal loading. It is hypothesized that wear resistance in this region correlates inversely with basic material parameters (modulus, hardness, toughness, strength) evaluated from 'standardized' test specimens. Ball-on-flat wear tests in simulation of oral function are used to quantify susceptibility to protracted sliding contact damage. Wear rates for this class of dental material tend to increase with quasistatic parameter values, so the latter do not provide a reliable guide to longevity. The generation of severe-wear facets involves cumulative quasiplastic deformation and microcrack coalescence at the grain level. It is implied that interplay between wear and fracture mechanisms should be an important consideration in future microstructural design of dental ceramics, especially in the quest to balance durability against esthetics.
- Subjects :
- Toughness
Ceramics
Materials science
Surface Properties
Biomedical Engineering
Modulus
02 engineering and technology
Article
Biomaterials
03 medical and health sciences
Dental Materials
0302 clinical medicine
Hardness
Materials Testing
Ceramic
Composite material
Mechanical Phenomena
030206 dentistry
021001 nanoscience & nanotechnology
Microstructure
Durability
Dental Porcelain
Mechanics of Materials
visual_art
visual_art.visual_art_medium
Fracture (geology)
Deformation (engineering)
0210 nano-technology
Quasistatic process
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- J Mech Behav Biomed Mater
- Accession number :
- edsair.doi.dedup.....3e94e8d90c4a3438211de37dd7cb9b56