title: Adhesion of restorations to impression materials.
abstract: Three impression materials, Impregum, Permadyne, and Reprosil, were tested with three restorative materials, Lodestar, Dispersalloy, and Concise. Polished cylindrical samples of each restorative material with and without a collar design were used for impression retention testing. A pullout test using an Instron machine was used to test the samples that were individually submerged in the impression materials until set. Results show similar behavior for Lodestar and Dispersalloy with and without a collar. Permadyne and Impregum were significantly more retentive with resin composite than was Reprosil. Resin composite was significantly more retentive than the metals. Impression materials may bond with restorative materials, significantly increasing resistance to impression removal.
authors.affiliation: Department of Restorative Dentistry, Tufts University, School of Dental Medicine, Boston, Massachusetts 02138, USA.
authors.forename: P L
authors.initials: PL
authors.lastname: Millstein
authors.forename: A
authors.initials: A
authors.lastname: Maya
authors.forename: J C
authors.initials: JC
authors.lastname: Segura
mesh_terms: D000268:Adhesiveness; D000704:Analysis of Variance; D017438:Bisphenol A-Glycidyl Methacrylate / Q000737:chemistry; D003722:Dental Alloys / Q000737:chemistry; D003760:Dental Impression Materials / Q000737:chemistry; D003761:Dental Impression Technique; D004987:Ethers; D005069:Evaluation Studies as Topic; D006047:Gold Alloys / Q000737:chemistry; D008422:Materials Testing; D016876:Metal Ceramic Alloys / Q000737:chemistry; D011145:Polyvinyls / Q000737:chemistry; D012117:Resins, Synthetic / Q000737:chemistry; D012833:Siloxanes / Q000737:chemistry
chemical_list: D003722:Dental Alloys; D003760:Dental Impression Materials; D004987:Ethers; D006047:Gold Alloys; C022821:Impregum; C096534:Lodestar Gold Ceramic Alloy; D016876:Metal Ceramic Alloys; C096535:Permadyne Premier; D011145:Polyvinyls; D012117:Resins, Synthetic; D012833:Siloxanes; C034183:vinyl polysiloxane; C033470:Dispersalloy; D017438:Bisphenol A-Glycidyl Methacrylate