title: Replica techniques for in vivo studies of tooth surfaces and prosthetic materials.
abstract: In order to obtain a replica technique suitable for a complete or segments of a dental arch two different impression materials were combined with two epoxy resin model materials. The models were examined and photographed in an optical microscope and a scanning electron microscope. No systematic differences were found between the used combinations of materials except a tendency towards greater contraction of one of the model materials. The A-silicone impression materials combined with one of the epoxy resin material seemed to be the easiest to handle and to give the best models.
mesh_terms: D002133:Calcium Sulfate; D003760:Dental Impression Materials; D003793:Dental Restoration, Permanent; D004853:Epoxy Resins; D005069:Evaluation Studies as Topic; D006801:Humans; D008297:Male; D008855:Microscopy, Electron, Scanning / Q000379:methods*; D008875:Middle Aged; D003765:Models, Dental; D010865:Pilot Projects; D012826:Silicone Elastomers; D013499:Surface Properties; D014070:Tooth / Q000033:anatomy & histology*
chemical_list: D003760:Dental Impression Materials; D004853:Epoxy Resins; D012826:Silicone Elastomers; D002133:Calcium Sulfate