title: Effect of physical and physicochemical surface treatment methods on the tensile strength of CAD/CAM-fabricated zirconia posts and cores luted to root canals.
abstract: This study investigated the effect of surface treatments on the retentive strength of zirconia posts and cores to root canals. Maxillary central incisors (n = 40) were treated endodontically, obturated, and post spaces were prepared. Zirconia posts and cores (n = 40) were obtained and assigned randomly to four groups (n = 10 per group; control, sandblasting, tribochemical silica coating, and tribochemical silica coating + silanization). Posts were cemented adhesively, and tensile force was applied. All treatment methods increased the tensile strength of zirconia posts and cores compared to the control group (P = .034). No significant difference was found between treatment methods. Failure types varied depending on the surface treatment method.
authors.affiliation: Department of Prosthodontics, Academic Center for Dental Sciences, Gülhane Military Medical Academy, Ankara, Turkey. cumhursipahi@yahoo.com
authors.forename: Cumhur
authors.initials: C
authors.lastname: Sipahi
authors.forename: Fulya
authors.initials: F
authors.lastname: Toksoy
authors.forename: Simel
authors.initials: S
authors.lastname: Ayyildiz
authors.forename: Mutlu
authors.initials: M
authors.lastname: Özcan
mesh_terms: D000537:Aluminum Oxide / Q000737:chemistry; D002484:Cementation / Q000379:methods*; D055598:Chemical Phenomena; D017076:Computer-Aided Design; D003738:Dental Cements / Q000737:chemistry; D045662:Dental Etching / Q000379:methods; D003764:Dental Materials / Q000737:chemistry*; D017267:Dental Prosthesis Design; D017268:Dental Prosthesis Retention; D003786:Dental Pulp Cavity / Q000033:anatomy & histology*; D003799:Dental Stress Analysis / Q000295:instrumentation; D006801:Humans; D007180:Incisor / Q000033:anatomy & histology; D008422:Materials Testing; D055585:Physical Phenomena; D011176:Post and Core Technique / Q000295:instrumentation*; D018915:Root Canal Preparation / Q000379:methods; D012821:Silanes / Q000737:chemistry; D012822:Silicon Dioxide / Q000737:chemistry; D013314:Stress, Mechanical; D013499:Surface Properties; D013696:Temperature; D013718:Tensile Strength; D013997:Time Factors; D015040:Zirconium / Q000737:chemistry*
chemical_list: C076805:Clearfil Porcelain Bond; D003738:Dental Cements; D003764:Dental Materials; D012821:Silanes; D012822:Silicon Dioxide; D015040:Zirconium; D000537:Aluminum Oxide; C028541:zirconium oxide