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- Title
Effect of Er,Cr:YSGG pretreatment on bond strength of fiber posts to root canal dentin using a self-adhesive resin cement.
- Authors
Mohammadi, Narmin; Savadi Oskoee, Siavash; Abed Kahnamoui, Mehdi; Bahari, Mahmoud; Kimyai, Soodabeh; Rikhtegaran, Sahand
- Abstract
The weak link in the adhesive luting of fiber posts to root canal dentin is at the cement-dentin interface. The aim of the present study was to evaluate the effect of Er,Cr:YSGG laser irradiation on push-out bond strength of fiber posts cemented to root canal dentin using a self-adhesive cement. A total of 30 sound human maxillary central incisors were equally divided into two groups after root canal treatment, decoronation and preparation of the post space. Teeth of group 1 were treated with the Er,Cr:YSGG laser, and teeth of group 2 (control) received no laser treatment. After cementation of fiber posts with Maxcem self-adhesive cement, 3-mm cervical, middle and apical sections were prepared from the roots. Then a push-out test was performed using a universal testing machine at a strain rate of 0.5 mm/min. Data were analyzed using two-way ANOVA and the Bonferroni test. Statistical significance was defined as P < 0.05. There was a significant difference in the mean bond strength values between groups 1 and 2 ( P = 0.001), but there were no significant differences between the various root parts ( P = 0.14). In addition, the cumulative effects of dentin treatment type and various root parts were not statistically significant ( P = 0.41). The mean bond strength in the laser group was significantly higher than in the control group ( P = 0.001, post hoc Bonferroni test).The failure mode was evaluated under a stereomicroscope at ×20 magnification.
- Subjects
RARE earth lasers; DENTAL bonding; DENTIN; ROOT canal treatment; DENTAL adhesives; DENTAL cements; STRENGTH of materials; IRRADIATION
- Publication
Lasers in Medical Science, 2013, Vol 28, Issue 1, p65
- ISSN
0268-8921
- Publication type
Academic Journal
- DOI
10.1007/s10103-012-1063-x