title: Effects of different luting cements and light curing units on the sealing ability and bond strength of fiber posts.
abstract: This study evaluated the sealing ability and push-out bond strength of two luting cements cured with two different types of light curing units (LCU): light-emitting diode (LED) versus quartz tungsten halogen (QTH). Forty teeth were divided into four groups(n=10/group). Quartz fiber posts (D. T. Light-Post) were luted to coronal or apical section of root canals using two types of resin cements (Panavia F or RelyX) cured with either LED LCU (Elipar FreeLight II) or QTH LCU (Optilux 501). Highest push-out bond strength was exhibited by QTH-cured RelyX, which was not significantly different from LED-cured RelyX but was higher than QTH-cured Panavia F. The push-out bond strength of Panavia F did not differ with LCU type (p>0.05), but exhibited lower values than both QTH- and LED-cured RelyX. Fluid filtration test revealed that sealing ability was not influenced by luting cement type, but was significantly influenced by LCU type in favor of QTH light source: QTH-cured specimens displayed better seal than LED-cured ones (p<0.05).
authors.affiliation: School of Dental Technology, Hacettepe University, Ankara, Turkey.
authors.forename: Nilüfer Celebi
authors.initials: NC
authors.lastname: Beriat
authors.forename: Ahmet Atila
authors.initials: AA
authors.lastname: Ertan
authors.forename: Zeliha
authors.initials: Z
authors.lastname: Yilmaz
authors.forename: Gülsah
authors.initials: G
authors.lastname: Gulay
authors.forename: Cem
authors.initials: C
authors.lastname: Sahin
mesh_terms: D003188:Composite Resins; D001840:Dental Bonding; D003763:Dental Leakage; D003799:Dental Stress Analysis; D005899:Glass Ionomer Cements; D006801:Humans; D055115:Light-Curing of Dental Adhesives / Q000295:instrumentation* / Q000379:methods; D011176:Post and Core Technique; D011791:Quartz; D019279:Resin Cements; D012390:Root Canal Therapy; D018709:Statistics, Nonparametric
chemical_list: D003188:Composite Resins; D005899:Glass Ionomer Cements; C438843:Panavia-Fluoro; D019279:Resin Cements; C084550:Vitremer; D011791:Quartz