Influence of Er:YAG and Ti:sapphire laser irradiation on the microtensile bond strength of several adhesives to dentin

The aim of the present study was to evaluate the influence of erbium:yttrium–aluminum–garnet (Er:YAG) and Ti:sapphire laser irradiation on the microtensile bond strength (MTBS) of three different adhesive systems to dentin. Flat dentin surfaces from 27 molars were divided into three groups according...

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Bibliographic Details
Published in:Lasers in medical science 2015-02, Vol.30 (2), p.483-492
Main Authors: Portillo, M., Lorenzo, M. C., Moreno, P., García, A., Montero, J., Ceballos, L., Fuentes, M. V., Albaladejo, A.
Format: Article
Language:English
Subjects:
Adhesives
Aluminum
Aluminum Oxide
Dental Bonding
Dentin - chemistry
Dentin-Bonding Agents - chemistry
Dentistry
Erbium
Humans
Laser Therapy - instrumentation
Laser Therapy - methods
Lasers
Medicine
Medicine & Public Health
Microscopy, Electron, Scanning
Molar - surgery
Optical Devices
Optics
Original Article
Photonics
Quantum Optics
Radiation
Regression Analysis
Resin Cements - chemistry
Tensile Strength
Yttrium
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Summary:The aim of the present study was to evaluate the influence of erbium:yttrium–aluminum–garnet (Er:YAG) and Ti:sapphire laser irradiation on the microtensile bond strength (MTBS) of three different adhesive systems to dentin. Flat dentin surfaces from 27 molars were divided into three groups according to laser irradiation: control, Er:YAG (2,940 nm, 100 μs, 2.7 W, 9 Hz) and Ti:sapphire laser (795 nm, 120 fs, 1 W, 1 kHz). Each group was divided into three subgroups according to the adhesive system used: two-step total-etching adhesive (Adper Scotchbond 1 XT, from now on XT), two-step self-etching adhesive (Clearfil SE Bond, from now on CSE), and all-in-one self-etching adhesive (Optibond All-in-One, from now on OAO). After 24 h of water storage, beams of section at 1 mm 2 were longitudinally cut from the samples. Each beam underwent traction test in an Instron machine. Fifteen polished dentin specimens were used for the surface morphology analysis by scanning electron microscopy (SEM). Failure modes of representative debonded microbars were SEM-assessed. Data were analyzed by ANOVA, chi-square test, and multiple linear regression ( p  
ISSN:0268-8921
1435-604X
DOI:10.1007/s10103-013-1343-0