title: Effect of increased post length due to the presence of the remaining coronal structure on the fracture strength of post-retained restorations.
abstract: This study evaluated the effects of the remaining coronal tissue and post type on the fracture strength of incisors. Sixty human maxillary central incisors were sectioned at the cemento-enamel junction or at 2 mm above this junction. The roots received cast cores and posts, fibre posts, or relined fibre posts (n = 10 each). A compressive load was applied over the cores untilfracture. In the absence of coronal structure, the fracture strength did not differ among the post types evaluated. In the presence of remaining coronal structure, the fracture strength was higher in specimens with cast cores and posts.
authors.forename: J L
authors.initials: JL
authors.lastname: Rodrigues
authors.forename: P I
authors.initials: PI
authors.lastname: Seraidarian
authors.forename: D D
authors.initials: DD
authors.lastname: Oliveira
authors.forename: W C
authors.initials: WC
authors.lastname: Jansen
authors.forename: K P S
authors.initials: KP
authors.lastname: Alves
authors.forename: A L
authors.initials: AL
authors.lastname: Faria-e-Silva
mesh_terms: D003188:Composite Resins / Q000737:chemistry; D019245:Compressive Strength; D003722:Dental Alloys / Q000737:chemistry; D003764:Dental Materials / Q000737:chemistry; D017267:Dental Prosthesis Design; D019232:Dental Restoration Failure; D003799:Dental Stress Analysis / Q000295:instrumentation; D017220:Dentin-Bonding Agents / Q000737:chemistry; D004853:Epoxy Resins / Q000737:chemistry; D005898:Glass / Q000737:chemistry; D006801:Humans; D007180:Incisor / Q000473:pathology*; D011176:Post and Core Technique / Q000295:instrumentation*; D019279:Resin Cements / Q000737:chemistry; D018915:Root Canal Preparation / Q000379:methods; D013314:Stress, Mechanical; D013499:Surface Properties; D019228:Tooth Crown / Q000473:pathology*
chemical_list: D003188:Composite Resins; D003722:Dental Alloys; D003764:Dental Materials; D017220:Dentin-Bonding Agents; D004853:Epoxy Resins; D019279:Resin Cements; C084018:Scotchbond Multi-Purpose; C009753:fiberglass; C533204:filtek Z350; C502351:multilink adhesive system