title: Physical properties of three maxillofacial materials as a function of accelerated aging.
abstract: This study compares the tensile strength, elongation, Shore-A hardness, and tear resistance of three silicone maxillofacial materials before and after aging to provide comparative data for evaluation of new or experimental elastomers. The materials evaluated were MDX-4-4210, Factor II (A-2186), and Cosmesil. Tests were conducted 24 hours after specimen preparation and were repeated after aging for 900 hours in a Weather-Ometer device. Five samples were made for each material under all test conditions. After testing, mean values were calculated for all materials under all test conditions and were compared by two-way analysis of variance and Tukey intervals at p < or = 0.05.
authors.affiliation: Department of Biologic and Materials Sciences, School of Dentistry, University of Michigan, Ann Arbor.
authors.forename: E R
authors.initials: ER
authors.lastname: Dootz
authors.forename: A
authors.initials: A
authors.lastname: Koran
authors.forename: R G
authors.initials: RG
authors.lastname: Craig
mesh_terms: D000704:Analysis of Variance; D001672:Biocompatible Materials / Q000737:chemistry*; D004129:Dimethylpolysiloxanes / Q000737:chemistry; D006244:Hardness; D008422:Materials Testing; D008447:Maxillofacial Prosthesis; D012826:Silicone Elastomers / Q000737:chemistry; D013718:Tensile Strength
chemical_list: C076788:A 2186; D001672:Biocompatible Materials; D004129:Dimethylpolysiloxanes; C020964:MDX 4-4210; D012826:Silicone Elastomers; C044914:cosmesil