Influence of thermocycling on the shear bonding strength of glass ionomer to Er:YAG laser-irradiated or bur-prepared dentin
ZHU Qiong
WANG Yang
FAN Yi-yun
YU Chun-mei
Abstract：AIM:To study the influence of thermocycling on the shear bond strength of a glass-ionomer ce-ment to Er:YAG irradiated or bur-prepared dentin.METHODS:40 premolars were selected and the roots were re-moved.Each premolar was separated into two parts.80 samples were individually embedded in polyester resin.Sam-ples were randomly assigned into 4 groups (n=20)according to the method of cavity preparation:Er:YAG laser or bur-preparation,with or without thermocycling for 12000 times.Fuji IX was adhered to the surface of the samples in each group.The shear bond strength of samples was measured by an universal testing machine.RESULTS:The thermocy-cle had no significant effect on the shear bond strength of glass ionomer to laser-irradiated dentin (P>0.05).In bur-prepared samples,the thermocycling decreased shear bond strength value (P<0.05 ).CONCLUSION:Thermocy-cling can decrease the shear bond strength of glass-ionomer cement bonded to bur-prepared dentin.
Keywords：Er:YAG Laserglass ionomershear bond strength
Publication Date：2014-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：3( 291-293 )