Force-displacement properties of a modified cross-linked silicone compared with facial tissues.
A dimethyl siloxane triacetoxy terminated silane, Type A adhesive, was modified with the base component of a medium grade polydimethyl siloxane with vinyl groups, MDX 4-4210, to produce a more pliable maxillofacial prosthesis. Force-displacement curves of various ratios of Type A adhesive/MDX 4-4210 were determined and compared with force-displacement curves obtained from human subjects. Within the force range of 0.4 to 1.2 N, the force-displacement slopes obtained on human subjects compared favourably with some of the Type A adhesive/MDX 4-4210 test specimens. The force-displacement slopes for the elastomers and humans were not in agreement for forces below 0.4 N.
Farah
J W
JW
Department of Biomaterials, School of Dentistry, University of Michigan, Ann Arbor 48109-1078.
Robinson
J C
JC
Hood
J A
JA
Koran
A
A
Craig
R G
RG
D001672:Biocompatible Materials; D002610:Cheek / Q000502:physiology; D004129:Dimethylpolysiloxanes; D004431:Ear, External / Q000502:physiology; D004548:Elasticity; D005152:Facial Muscles / Q000502:physiology*; D005546:Forehead; D006801:Humans; D008447:Maxillofacial Prosthesis; D012826:Silicone Elastomers; D012828:Silicones; D012833:Siloxanes; D012879:Skin Physiological Phenomena; D013314:Stress, Mechanical
D001672:Biocompatible Materials; D004129:Dimethylpolysiloxanes; C020964:MDX 4-4210; D012826:Silicone Elastomers; D012828:Silicones; D012833:Siloxanes