Effects of different curing units and luting agents on push-out bond strength of translucent posts.
BACKGROUND
The aim of this study was to evaluate the effects of different curing units and 2 luting cements on the push-out bond strength of a translucent fiber post.


METHODS
Thirty maxillary incisor roots were endodontically treated. Post spaces were prepared, and the smear layers were removed. Posts (FRC Postec Plus) were luted with either a self-etch cement (Panavia F 2.0) or a self-adhesive cement (Maxcem). Luting agents were then light-activated with a quartz-tungsten-halogen, a blue light-emitting diode, or a plasma-arc curing unit. Roots/cemented posts were transversally sectioned from coronal to apical. Push-out tests were performed, and data were analyzed by using three-way analysis of variance and Tukey tests.


RESULTS
Push-out bond strengths were significantly affected by the type of luting agent (P < .05) and root region (P < .05). The type of light source used in curing did not affect push-out bond strengths (P > .05).


CONCLUSIONS
Self-adhesive resin cement provided higher bond strength than the self-etch cement when smear layer was removed before the post cementation. The push-out bond strength in the apical portion of the root was significantly lower than in the coronal region. The use of different curing units in the photoirradiation of dual-cured resin cement did not affect the retention of the fiber post as a result of the limited light transmission capability of this post.
Zorba
Yahya Orçun
YO
Department of Restorative Dentistry and Endodontics, Faculty of Dentistry, Erciyes University, Melikgazi, Kayseri, Turkey. orcunzorba@kku.edu.tr
Erdemir
Ali
A
Turkyilmaz
Ali
A
Eldeniz
Ayçe Unverdi
AU
D000704:Analysis of Variance; D055117:Curing Lights, Dental; D001840:Dental Bonding / Q000379:methods*; D003738:Dental Cements / Q000737:chemistry / Q000528:radiation effects*; D045662:Dental Etching / Q000379:methods; D017267:Dental Prosthesis Design; D017268:Dental Prosthesis Retention; D003799:Dental Stress Analysis; D017220:Dentin-Bonding Agents / Q000737:chemistry / Q000528:radiation effects; D006801:Humans; D007180:Incisor; D008437:Maxilla; D011176:Post and Core Technique / Q000295:instrumentation*; D019279:Resin Cements / Q000737:chemistry / Q000528:radiation effects*; D012387:Root Canal Filling Materials / Q000737:chemistry / Q000528:radiation effects; D016369:Smear Layer; D018709:Statistics, Nonparametric
D003738:Dental Cements; D017220:Dentin-Bonding Agents; C515955:Maxcem; C438843:Panavia-Fluoro; D019279:Resin Cements; D012387:Root Canal Filling Materials