Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/86840
Título: | Tribological behavior of TiO2 PEEK composite and stainless steel for pediatric crowns |
Autor(es): | Arieira, Ana Filipa Amorim Madeira, Sara Cristina Soares Rodrigues, Flávio Gabriel Silva Silva, Filipe Samuel |
Palavras-chave: | Coefficient of friction Wear rate Stainless steel Polyetheretherketone (PEEK) |
Data: | 17-Mar-2023 |
Editora: | Multidisciplinary Digital Publishing Institute (MDPI) |
Revista: | Materials |
Citação: | Arieira, A.; Madeira, S.; Rodrigues, F.; Silva, F. Tribological Behavior of TiO2 PEEK Composite and Stainless Steel for Pediatric Crowns. Materials 2023, 16, 2420. https://doi.org/10.3390/ma16062420 |
Resumo(s): | Dental decay still presents a major health problem among children. Its treatment usually requires the use of stainless steel crowns. This study compares the wear behavior of 316 L stainless steel and polyetheretherketone (PEEK) composite under identical test conditions. The wear tests were conducted in a reciprocating ball-on-plate tribometer (Plint TE67/R) using alumina balls as a counterface and artificial saliva as a lubricant at 37 °C to faithfully mimic oral conditions. The coefficient of friction (COF) and specific wear rate (<i>k</i>) values were determined and SEM/EDS examinations were performed to identify the predominant wear mechanisms. Results showed that PEEK exhibited a significantly lower coefficient of friction (COF = 0.094 ± 0.004) and thus lower wear volume (Δ<i>V</i> = 0.0078 ± 0.0125 mm<sup>3</sup>) and higher wear resistance, with an average value of specific wear rate of <i>k</i> = 9.07 × 10<sup>−6</sup> mm<sup>3</sup>N<sup>−1</sup>m<sup>−1</sup> when compared to stainless steel (COF = 0.32 ± 0.03, Δ<i>V</i> = 0.0125 ± 0.0029 mm<sup>3</sup>, <i>k</i> = 1.45 × 10<sup>−5</sup> mm<sup>3</sup>N<sup>−1</sup>m<sup>−1</sup>). PEEK was revealed to be a potential material for use in pediatric crowns due to its high wear resistance while overcoming the disadvantages associated with steel at both an aesthetic and biological level. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/86840 |
DOI: | 10.3390/ma16062420 |
e-ISSN: | 1996-1944 |
Versão da editora: | https://www.mdpi.com/1996-1944/16/6/2420 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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materials-16-02420.pdf | 6,56 MB | Adobe PDF | Ver/Abrir |
Este trabalho está licenciado sob uma Licença Creative Commons