Wear Potential of Dental Ceramics and its Relationship with Microhardness and Coefficient of Friction

Abstract

Wear potential may be related to the coefficient of friction in Noritake ceramics, which had a lower coefficient than Eris ceramics. Within-group analysis showed no differences in polished or glazed specimens. The differences observed were not associated with microhardness.

Wear resistance and abrasiveness of CAD-CAM monolithic materials

“…In addition to the IPS e.max CAD, Lava Plus also exhibited significantly higher hardness than Vita Enamic and Lava Ultimate. Differently from other studies [14][15][16] that did not find a strong relationship between hardness and wear potential, Mormann et al 6 reported that the lower the hardness, the lower the enamel wear, which is in accordance with the present study. We also observed that the lower the hardness, the lower the antagonist materials' wear.…”

“…The wear properties of zirconia, [3][4][5][6][7][8] lithium disilicate, 3,4,6,9,10,11 zirconia-reinforced lithium silicate, 10 polymer-infiltrated ceramic, and nanofilled composite resin 6,10,12 when opposed to enamel have been reported. However, the multifactorial nature of wear 6,13,14 makes it important to understand the wear potential of the materials based on the composition and microstructural aspects [15][16][17] that will determine their properties. [18][19][20][21][22][23][24] The role that the roughness, [6][7][8][9]25 coefficient of friction, 4,14 elastic modulus, 10 and hardness 6,14,15 play in determining wear potential has been investigated.…”

“…However, the multifactorial nature of wear 6,13,14 makes it important to understand the wear potential of the materials based on the composition and microstructural aspects [15][16][17] that will determine their properties. [18][19][20][21][22][23][24] The role that the roughness, [6][7][8][9]25 coefficient of friction, 4,14 elastic modulus, 10 and hardness 6,14,15 play in determining wear potential has been investigated.…”

The ball-on-disk cyclic wear of CAD/CAM machinable dental composite and ceramic materials

“…A coefficient of friction was setted 0.1 in the finite element models of the present study, whereas recent studies have reported coefficients ranging from 0.1 to 0.6 (1,12,28). In a preliminary analysis, it was confirmed that the maximum strain magnitudes would be approximately doubled if the coefficient of friction increased to 0.3 (data not shown).…”

“…The ball-on-disk cyclic wear of CAD/CAM machinable dental composite and ceramic materials advocated (4-7) in addition to environmental factors (8), whereas the surface mechanical interaction between two moving surfaces cannot be determined by a single property, but combinations of multiple properties (9) such as hardness (8), tensile strength (10), fracture toughness (7), elastic modulus (11), and frictional coefficients (12). Second, the effect of cusp geometry on wear is not well understood.…”