title: Influence of compliance of the substrate materials on polymerization contraction stress in thin resin composite layers.
abstract: The present study determined in a laboratory set-up the influence of compliance of the substrate material on polymerisation contraction stress for various thicknesses of bonded dental resin composite films. When the compliance of the tensilometer set-up was increased from 0.029 micron MPa-1 to 0.150 micron MPa-1, the contraction stress in films with a thickness of 100 microns and a diameter of 5.35 mm decreased from 22 to 7 MPa. For the 700 microns samples the stress decreased from 12 to 11 MPa. It was concluded that if compliance from the substrate materials is possible, a thinner resin composite film may effect a more reliable bond.
authors.affiliation: Department of Dental, Materials Science, Academic Centre for Dentiatry Amsterdam, The Netherlands.
authors.forename: D
authors.initials: D
authors.lastname: Alster
authors.forename: B A
authors.initials: BA
authors.lastname: Venhoven
authors.forename: A J
authors.initials: AJ
authors.lastname: Feilzer
authors.forename: C L
authors.initials: CL
authors.lastname: Davidson
mesh_terms: D055598:Chemical Phenomena; D002627:Chemistry, Physical; D003764:Dental Materials / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry; D012116:Resins, Plant / Q000737:chemistry*; D013314:Stress, Mechanical
chemical_list: D003764:Dental Materials; D011108:Polymers; D012116:Resins, Plant