The combined occluding effect of Er:YAG laser and desensitizing dentifriceon human dentinal tubules
LI Zhen
ZHAO Ji-zhi
LI Qian
KONG Ya-qun
ZHANG Xiao-wei
TANG You-jia
WANG Wei
CHEN Hai-jing
CHANG Jin-lan
SONG Shuo
HE Tao
YANG Wen-dong
Abstract：AIM:To evaluate the combined occluding effect of Er:YAG laser and desensitizing dentifrice-with different irradiation parameters on human dentinal tubules.METHODS:6 freshly extracted intact human third molars were prepared into 24 detine slices with the thickness of 0.8 mm,the samples were randomly divided into 4 groups.The samples in group A received no treatment at the controls;in group B were irradiated by Er:YAG laser at 40 mJ,10 pulses/s for 20 s,for 3 circles;in group C were brushed with desensitizing dentifrice,and then irradiated by Er:YAG laser with the same parameters as group B;in group D were brushed with desensitizing dentifrice,and then irradiated by Er:YAG laser at 60 mJ,10 pulses/s for 10 s,for 3 cycles.The dentin slices were then observed under SEM.RESULTS:Under SEM,in group A all dentinal tubule orifices were open and with uniform diameter.In Group B,the dentin surface was uneven,some areas were melted,partial dentinal tubules were occluded or reduced. Group C showed melted uniform changes,the number of open dentinal tubules and diameters reduced.Group Dshowed melted uniform changes,almost all of the dentinal tubule orifices were occluded,no over-therm changes such as crack-ing or carbonization were detected.CONCLUSION:Er:YAG laser with suitalble energy and irritation time combined with desensitizing dentifrice can produce better dentinal tubule orifice occluding effect than the use of Er:YAG laser a-lone.
Keywords：Er:YAG laserdentine hypersensitivitydentifrice
Publication Date：2016-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 551-553,558 )