Long-life physical property preservation and postendodontic rehabilitation with the Composipost.
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.
Duret
B
B
Section of Restorative Imaging, University of Southern California, School of Dentistry, Los Angeles, California, USA.
Duret
F
F
Reynaud
M
M
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
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