title: Increased wall-to-wall curing contraction in thin bonded resin layers.
abstract: Wall-to-wall (WTW) polymerization contraction of filled and unfilled chemically and photo-initiated resins was studied in relation to the WTW distance. In an experimental set-up, the resins were bonded to two opposing disks, and the axial (WTW) displacement resulting from the polymerization shrinkage was measured continuously. It was found that the WTW contraction increased with decreasing WTW distance and ultimately reached a value of almost three times the linear polymerization shrinkage.
authors.affiliation: University of Amsterdam, Department of Dental Materials Science, The Netherlands.
authors.forename: A J
authors.initials: AJ
authors.lastname: Feilzer
authors.forename: A J
authors.initials: AJ
authors.lastname: De Gee
authors.forename: C L
authors.initials: CL
authors.lastname: Davidson
mesh_terms: D055598:Chemical Phenomena; D002627:Chemistry, Physical; D003188:Composite Resins; D001840:Dental Bonding; D003799:Dental Stress Analysis; D013499:Surface Properties
chemical_list: D003188:Composite Resins