title: Long-life physical property preservation and postendodontic rehabilitation with the Composipost.
abstract: Most coronal radicular reconstructions are made of cast inlay core metals or prefabricated posts covered in composite. The differences in the mechanical properties of these elements create a heterogeneous mass with inconsistent mechanical behavior. Studies using the Finite Element Method have shown the biomechanical disturbances caused by the inclusion of materials with a modulus of elasticity that is superior to that of dentine (i.e., nickel, chrome, zircon, etc). The use of materials with a modulus of elasticity close to that of dentine does not disturb the flow of stress inside the root. To our knowledge, only a composite material structured with programmable mechanical properties would be capable of producing both high mechanical performance and a modulus of elasticity adapted to dentine values. The C-POST, made of carbon epoxy, accommodates the demands of the dentine, as well as the in vitro stress linked to the prosthesis. The internal structure, consisting of long high-performance carbon fibers, unidirectionally and equally stretched, confers a totally original behavior that is adapted to clinical objectives. In addition, the C-POST has a fracture resistance superior to most metals.
authors.affiliation: Section of Restorative Imaging, University of Southern California, School of Dentistry, Los Angeles, California, USA.
authors.forename: B
authors.initials: B
authors.lastname: Duret
authors.forename: F
authors.initials: F
authors.lastname: Duret
authors.forename: M
authors.initials: M
authors.lastname: Reynaud
mesh_terms: D001696:Biomechanical Phenomena; D002244:Carbon / Q000737:chemistry; D000077482:Carbon Fiber; D002858:Chromium Alloys / Q000737:chemistry; D019245:Compressive Strength; D003442:Crowns; D001840:Dental Bonding; D003764:Dental Materials / Q000737:chemistry; D017267:Dental Prosthesis Design; D019232:Dental Restoration Failure; D003804:Dentin / Q000502:physiology; D017220:Dentin-Bonding Agents / Q000737:chemistry; D004548:Elasticity; D004853:Epoxy Resins / Q000737:chemistry; D020342:Finite Element Analysis; D005899:Glass Ionomer Cements / Q000737:chemistry; D006801:Humans; D011176:Post and Core Technique; D012390:Root Canal Therapy; D012823:Silicate Cement / Q000737:chemistry; D013314:Stress, Mechanical; D013499:Surface Properties; D013718:Tensile Strength; D014025:Titanium / Q000737:chemistry
chemical_list: D000077482:Carbon Fiber; D002858:Chromium Alloys; D003764:Dental Materials; D017220:Dentin-Bonding Agents; D004853:Epoxy Resins; D005899:Glass Ionomer Cements; C111282:dental polyglass; D012823:Silicate Cement; D002244:Carbon; D014025:Titanium