Setting stress in composite resin in relation to configuration of the restoration.
The setting stress in composite resins was studied as a function of restoration shape. The shape is described by the configuration factor, C, the ratio of the restoration's bonded to unbonded (free) surfaces. In an experimental set-up, the shape of the restoration was simulated by cylindrical forms of various dimensions. The shrinkage stress was measured continuously. It was shown that in most of the clinically relevant cavity configurations, the stress-relieving flow is not sufficient to preserve adhesion to dentin by dentin-bonding agents.
Feilzer
A J
AJ
Department of Clinical Materials Science, ACTA, University of Amsterdam, The Netherlands.
De Gee
A J
AJ
Davidson
C L
CL
D017438:Bisphenol A-Glycidyl Methacrylate / Q000737:chemistry; D003188:Composite Resins / Q000737:chemistry*; D001840:Dental Bonding; D003737:Dental Cavity Preparation; D017267:Dental Prosthesis Design; D003793:Dental Restoration, Permanent; D003799:Dental Stress Analysis / Q000295:instrumentation; D003804:Dentin / Q000648:ultrastructure; D017220:Dentin-Bonding Agents / Q000737:chemistry; D006801:Humans; D019279:Resin Cements / Q000737:chemistry; D012821:Silanes / Q000737:chemistry; D013314:Stress, Mechanical; D013499:Surface Properties
D003188:Composite Resins; D017220:Dentin-Bonding Agents; D019279:Resin Cements; D012821:Silanes; D017438:Bisphenol A-Glycidyl Methacrylate; C033930:Silar (3M); C067318:P10 dental resin; C041330:Scotchbond