Please use this identifier to cite or link to this item: http://hdl.handle.net/1822/52559

TitleAbrasive and sliding wear of resin composites for dental restorations
Author(s)Souza, J. C. M.
Bentes, Ana Catarina Fernandes
Reis, Kelly
Gavinha, Sandra
Buciumeanu, Mihaela
Henriques, Bruno
Silva, Filipe Samuel
Gomes, J. R.
KeywordsResin composites
Dental restorations
Biotribology
Microabrasion
Reciprocating sliding wear
Issue date2016
PublisherElsevier
JournalTribology International
Abstract(s)The aim of this work was to study the abrasive and reciprocating sliding wear resistance of four commercial resin composites for dental restorations. Resin composite samples were divided into four groups considering the different materials and then separated for compressive, abrasive and sliding tests (n=10). Micro-abrasion tests were performed against a stainless steel rotating ball on 3 N normal load for 300 revolutions in the presence of a suspension containing a commercial whitening and abrasive tooth paste. Reciprocating sliding ball-on-plate friction tests were performed against an alumina ball on 20 N normal load at 1 Hz in the presence of artificial saliva at 37 °C for 30 min.The wear volume was evaluated for the different groups of resin composites and correlated with their mechanical properties and inorganic composition in terms of size and volume percentage of filler particles. Resin composites with high volume content of inorganic fillers (82 wt%) consisting of microparticles( 0.1–2.5 μm) combined with small nanoparticles (20–60 nm) revealed the most proper mechanical and tribological response. The dominant wear mechanisms consisted on fine micro-scale abrasion for abrasion tests and surface fatigue and abrasion for reciprocating sliding tests.
TypeArticle
URIhttp://hdl.handle.net/1822/52559
DOI10.1016/j.triboint.2016.05.035
ISSN0301-679X
e-ISSN1879-2464
Peer-Reviewedyes
AccessRestricted access (UMinho)
Appears in Collections:DEM - Artigos em revistas de circulação internacional com arbitragem científica

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