title: Four-year Survival of Endodontically Treated Premolars Restored with Fiber Posts.
abstract: The objective of this prospective clinical trial was to investigate the influence of the residual coronal structure of endodontically treated teeth and the type of cement used for luting fiber posts on four-year clinical survival. Two groups (n = 60) were defined, depending on the amount of residual coronal dentin after abutment build-up and final preparation: (1) more than 50% of coronal residual structure; and (2) equal to or less than 50% of coronal residual structure. Within each group, teeth were randomly divided into 2 subgroups (n = 30) according to the material used for luting fiber posts: (A) resin core build-up material, Gradia Core; or (B) self-adhesive universal cement GCem Automix. The rate of success was assessed based on clinical and intra-oral radiographic examinations at the follow-up after 6, 12, 24, 36, and 48 months. The highest 48-month success and survival rates were recorded in group 1A (90% and 100%, respectively), whereas teeth in group 2B exhibited the lowest performance (63.3% success rate, 86.6% survival rate). Cox regression analysis revealed that neither the amount of coronal residual structure nor the luting material significantly influenced the failure risk (p > .05) (ClinicalTrials.gov, NCT01532947).
authors.affiliation: Department of Medical Biotechnologies, University of Siena, Italy Clinic for Pediatric and Preventive Dentistry, School of Dentistry, University of Belgrade, Serbia jelenajuloski@gmail.com.
authors.forename: J
authors.initials: J
authors.lastname: Juloski
authors.affiliation: Department of Medical Biotechnologies, University of Siena, Italy.
authors.forename: G M
authors.initials: GM
authors.lastname: Fadda
authors.affiliation: Faculty of Health and Sport Sciences, University of Zaragoza, Spain.
authors.forename: F
authors.initials: F
authors.lastname: Monticelli
authors.affiliation: Faculty of Health and Sport Sciences, University of Zaragoza, Spain.
authors.forename: M
authors.initials: M
authors.lastname: Fajó-Pascual
authors.affiliation: Department of Medical Biotechnologies, University of Siena, Italy.
authors.forename: C
authors.initials: C
authors.lastname: Goracci
authors.affiliation: Department of Medical Biotechnologies, University of Siena, Italy.
authors.forename: M
authors.initials: M
authors.lastname: Ferrari
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001641:Bicuspid / Q000473:pathology*; D003188:Composite Resins / Q000737:chemistry; D000044:Dental Abutments; D003764:Dental Materials / Q000737:chemistry; D019232:Dental Restoration Failure; D003804:Dentin / Q000473:pathology; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D010483:Periapical Diseases / Q000209:etiology; D011176:Post and Core Technique / Q000295:instrumentation*; D011446:Prospective Studies; D016300:Radiography, Bitewing; D019279:Resin Cements / Q000737:chemistry; D016019:Survival Analysis; D019228:Tooth Crown / Q000473:pathology; D014082:Tooth Fractures / Q000209:etiology; D019231:Tooth Preparation, Prosthodontic / Q000379:methods; D014092:Tooth Root / Q000293:injuries; D019553:Tooth, Nonvital / Q000628:therapy*; D016896:Treatment Outcome; D055815:Young Adult
chemical_list: D003188:Composite Resins; D003764:Dental Materials; C528107:G-Cem resin cement; C470230:Gradia; D019279:Resin Cements
keywords: clinical trial; endodontically treated teeth; post-and-core technique; resin cements; survival rate; tooth preparation