title: Initial sliding wear kinetics of two types of glass ionomer cement: a tribological study.
abstract: The aim of this work was to characterize the initial wear kinetics of two different types of glass ionomer cement used in dentistry (the conventional glass ionomer cement and the resin-modified glass ionomer cement) under sliding friction after 28-day storing in distilled water or Ringer's solution. Sliding friction was applied through a pin-on-disk tribometer, in sphere-on-plane contact conditions, under 5 N normal load and 120 rotations per minute. The test lasted 7500 cycles and replicas were performed at 2500, 5000 and 7500 cycles. A profilometer was used to evaluate the wear volume. Data were analysed using Student's t-test at a significant level of 5%. There is no statistical significant difference between the results obtained for a given material with the maturation media (P > 0.05). However, for a given maturation medium, there are significant statistical differences between the data obtained for the two materials at each measurement (P < 0.0001). The wear rates of both materials decrease continuously during the running-in period between 0 and 2500 cycles. After 2500 cycles, the wear rate becomes constant and equal for both materials. The resin matrix contained in the resin-modified glass ionomer cement weakens the tribological behaviour of this material.
authors.affiliation: UFR d'Odontologie, Université de Lyon, 11 rue Guillame Paradin, 69372 Lyon, France ; Service de Consultations et Traitements Dentaires, Hospices Civils de Lyon, 6-8 Place Deperet, 69365 Lyon, France ; Laboratoire des Multimatériaux et Interfaces, CNRS UMR 5615, Université de Lyon, 11 rue Guillaume Paradin, 69372 Lyon, France.
authors.forename: Cyril
authors.identifier: 0000-0001-8282-0624
authors.initials: C
authors.lastname: Villat
authors.affiliation: Laboratoire de Génie des Procédés et Matériaux, Ecole Centrale Paris, Chemin des Vignes, 92295 Châtenay-Malabry, France.
authors.forename: Pierre
authors.initials: P
authors.lastname: Ponthiaux
authors.affiliation: Laboratoire des Multimatériaux et Interfaces, CNRS UMR 5615, Université de Lyon, 11 rue Guillaume Paradin, 69372 Lyon, France ; UFR d'Odontologie, Université Denis Diderot Paris 7, 5 rue Garancière, 75006 Paris, France.
authors.forename: Nelly
authors.initials: N
authors.lastname: Pradelle-Plasse
authors.affiliation: UFR d'Odontologie, Université de Lyon, 11 rue Guillame Paradin, 69372 Lyon, France ; Service de Consultations et Traitements Dentaires, Hospices Civils de Lyon, 6-8 Place Deperet, 69365 Lyon, France ; Laboratoire des Multimatériaux et Interfaces, CNRS UMR 5615, Université de Lyon, 11 rue Guillaume Paradin, 69372 Lyon, France.
authors.forename: Brigitte
authors.initials: B
authors.lastname: Grosgogeat
authors.affiliation: Laboratoire des Multimatériaux et Interfaces, CNRS UMR 5615, Université de Lyon, 11 rue Guillaume Paradin, 69372 Lyon, France ; UFR d'Odontologie, Université Denis Diderot Paris 7, 5 rue Garancière, 75006 Paris, France.
authors.forename: Pierre
authors.initials: P
authors.lastname: Colon
mesh_terms: D003813:Dentistry; D005899:Glass Ionomer Cements / Q000737:chemistry* / Q000627:therapeutic use*; D006801:Humans; D007552:Isotonic Solutions / Q000737:chemistry; D007700:Kinetics; D008422:Materials Testing; D019279:Resin Cements / Q000737:chemistry* / Q000627:therapeutic use; D000077331:Ringer's Solution; D014867:Water / Q000737:chemistry
chemical_list: D005899:Glass Ionomer Cements; D007552:Isotonic Solutions; D019279:Resin Cements; D014867:Water; D000077331:Ringer's Solution
references.citation: Biomaterials. 2004 May;25(11):2179-85
references.pmid: 14741633
references.citation: Dent Mater. 2006 Jan;22(1):84-93
references.pmid: 16002133
references.citation: J Dent Res. 1997 Apr;76(4):883-94
references.pmid: 9126185
references.citation: Dent Mater. 2006 Aug;22(8):702-11
references.pmid: 16530263
references.citation: J Contemp Dent Pract. 2004 Nov 15;5(4):42-9
references.pmid: 15558089
references.citation: Dent Mater. 2005 Dec;21(12):1111-8
references.pmid: 16085304
references.citation: J Prosthet Dent. 2002 Jun;87(6):650-6
references.pmid: 12131888
references.citation: J Mater Sci Mater Med. 1997 Jul;8(7):413-6
references.pmid: 15348723
references.citation: J Prosthet Dent. 2000 Oct;84(4):444-52
references.pmid: 11044853
references.citation: Dent Mater. 2004 May;20(4):358-63
references.pmid: 15019450
references.citation: Dent Mater. 2006 Aug;22(8):693-701
references.pmid: 16712913
references.citation: Dent Mater. 2004 Mar;20(3):277-85
references.pmid: 15209233
references.citation: Dent Mater. 2003 Jun;19(4):286-90
references.pmid: 12686292
references.citation: Dent Mater. 2006 Aug;22(8):712-34
references.pmid: 16574212
references.citation: Dent Mater. 2006 Nov;22(11):1051-62
references.pmid: 16386293
references.citation: Dent Mater. 2005 Aug;21(8):716-20
references.pmid: 16026667
references.citation: J Oral Rehabil. 2003 Jan;30(1):1-8
references.pmid: 12485377
references.citation: J Dent. 1998 Nov;26(8):707-12
references.pmid: 9793294
references.citation: J Dent. 2004;32 Suppl 1:41-5
references.pmid: 14738834
references.citation: Dent Mater. 2005 Apr;21(4):304-17
references.pmid: 15766577
references.citation: Dent Mater. 2000 Mar;16(2):129-38
references.pmid: 11203534
references.citation: Dent Mater. 2001 Jan;17(1):34-9
references.pmid: 11124411