Bonding of Adhesives to Er-YAG-laser treated Dentin
Objectives: The aim of this study was to investigate the effect of Er: YAG laser irradiation on the shear bond strength of four different adhesives to lased dentin and the ultrastructure of the resin-dentin interface. Methods:Superficial and deep dentin from human molars was used. Dentin specimens were treated either with carbide bur or with an Erbium: YAG laser. Two total-etch adhesives (Single Bond and XP Bond) applied with acid etching and two self-etch adhesives (Prompt L-Pop and Xeno III) were employed to bond the composite. The shear bond strength (SBS) was determined after 24 h of storage in water. Shear testing was conducted by means of a universal testing machine with a crosshead speed of 0.5mm/min. Failure patterns were analyzed using a stereomicroscope, for determination of the failure modes and samples were processed for SEM evaluation. A three-way analysis of variance (ANOVA) was performed. Multiple comparisons were done by Bonferroni test. Results:The main result was a significant effect of treatment method p<0.05 showing a difference between laser irradiation and carbide bur cut. Shear bond strength was not significantly influenced by dentin depth when the same treatment was used. The total-etch adhesive bonded significantly less effectively to lased than to carbide bur-cut dentin. The self-etch adhesive performed equally to lased as to bur-cut superficial dentin, but significantly less effectively to lased than to bur-cut deep dentin Also there was a significant effect of adhesives p<0.05 showing a difference between XP Bond and XenoIII. Conclusions:It is concluded that cavities prepared by laser appear less receptive to adhesive procedures than conventional bur cut cavities
Continental European and Israeli Divisions Meeting
2007 Continental European and Israeli Divisions Meeting (Thessaloniki, Greece) Thessaloniki, Greece
2007 462 Scientific Groups
Koliniotou-koumpia, Eugenia
( Aristotle University of Thessaloniki, Thessaloniki, N/A, Greece
)
Kouros, Pantelis
( Aristotle University of Thessaloniki, Thessaloniki, N/A, Greece
)
Zafiriadis, Lazaros
( Aristotle University of Thessaloniki, Thessaloniki, N/A, Greece
)
Dionysopoulos, Paulos
( Aristotle University of Thessaloniki, Thessaloniki, N/A, Greece
)
Karagiannis, Vasilios
( Aristotle University of Thessaloniki, Thessaloniki, N/A, Greece
)