title: Determining the force absorption quotient for restorative materials used in implant occlusal surfaces.
abstract: It has been hypothesized that the type of material used to form the occlusal surface of restorations retained by dental implants may impart a "dampening effect" to the bone-implant interface. This study compared the force transmitted to human bone by gold, porcelain, and resin occlusal surfaces in a simulated implant occlusal rehabilitation. A Branemark self-tapping implant was placed in a human cadaver mandible with a stacked three element strain gauge cemented to the lingual cortical plate. An Instron testing machine was used to apply an axial force, through a peanut sample, to a restoration that contained interchangeable occlusal surfaces. Applied force was divided by recorded microstrain at the bone-strain gauge junction to derive a calculated ratio, or force absorption quotient. No statistically significant difference of the force absorption quotient between the occlusal surfaces of gold, porcelain, and resin was observed.
authors.affiliation: University of Michigan, Ann Arbor.
authors.forename: R M
authors.initials: RM
authors.lastname: Cibirka
authors.forename: M E
authors.initials: ME
authors.lastname: Razzoog
authors.forename: B R
authors.initials: BR
authors.lastname: Lang
authors.forename: C S
authors.initials: CS
authors.lastname: Stohler
mesh_terms: D000042:Absorption; D010367:Arachis; D001732:Bite Force; D003188:Composite Resins / Q000737:chemistry; D003758:Dental Implantation, Endosseous / Q000295:instrumentation; D015921:Dental Implants; D003764:Dental Materials / Q000737:chemistry*; D003776:Dental Porcelain / Q000737:chemistry; D003799:Dental Stress Analysis; D006047:Gold Alloys / Q000737:chemistry; D006801:Humans; D008334:Mandible / Q000502:physiology*; D008409:Mastication; D008422:Materials Testing; D013314:Stress, Mechanical; D013499:Surface Properties
chemical_list: D003188:Composite Resins; D015921:Dental Implants; D003764:Dental Materials; D006047:Gold Alloys; D003776:Dental Porcelain