title: The storage stability of dental composite resins: seven-year results.
abstract: The properties of chemically cured and light-cured composite resins were recorded at baseline and at intervals over seven years, while the materials were exposed to controlled storage conditions as well as to various conditions typical of clinical situations. For chemically cured resins in clinical conditions, mechanical properties decreased, and working and setting times increased over four years; if refrigerated (controlled), properties remained constant past seven years. For light-cured resins, test results were constant over the entire seven-year test period regardless of storage conditions. An accelerated aging protocol was developed to allow for the evaluation of the relative storage stability of new and similar materials.
authors.affiliation: Department of Army, USA Area Dental Laboratory, Fort Gordon, GA 30905-5660, USA.
authors.forename: S O
authors.initials: SO
authors.lastname: Hondrum
authors.forename: R
authors.initials: R
authors.lastname: Fernandez
mesh_terms: D002850:Chromatography, Gel; D003116:Color; D003188:Composite Resins / Q000737:chemistry*; D004355:Drug Stability; D004356:Drug Storage; D004548:Elasticity; D008422:Materials Testing; D013696:Temperature; D013718:Tensile Strength; D013997:Time Factors
chemical_list: D003188:Composite Resins