Forums Laser Resources Laser Restorative Related Literature Microleakage of Class 1 & Class 5 Resin

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    Anonymous
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    From ESOLA Journal of Oral Laser Appplications ( Vol 3, Number 4 Winter 2003)-

    Microleakage of Class I and ClassV Resin Composite After Bur or Er,Cr,YSGG Laser Preparation

    Tankut Gursoy,Magrur Kazak,Kagan Gokce,Yasemin Benderli

    Purpose
    The aim of this study was to compare marginal microleakage of resin composites in Class I and Class V cavities prepared classically(bur) or with an er,cr:YSGG laser sysytem.

    Materials and Methods
    54 caries free extracted human 3rd molars were divided into 2 equal groups; group 1 (unlased), all cavities (n=9classV,n=18ClassI)were prepared with a bur and total etched;group2 (lased) all cavities(n=9 Class V;n=18 class I)were prepared w/ an er,cr:ysgg laser. After cavity preparation, an adhesive system(Excite) was applied and a resin composite (TetricCeram) placed into all cavities according to manufacturers instructions. The teeth were sealed w/ nail polish, imersed in 5% methylene blue, sectioned, and examined w/ a stereomicroscope at 10X.Dye penetration scores were recorded using different scales for ClassI and ClassV cavities.

    Results
    Unlased Class I cavities had statistically significant(p<.001) less microleakage than lased class I cavities. In Class V cavities, coventional preparation also yielded significantly less microleakage than did er,cr:YSGG
    laser preparation

    Conclusion

    Our findings show that er,cr:YSGG laser irradiation of enamel and dentin is not a valid alternative to acid etching pretreatment of cavities to be filled w/ resin compositie materials.

    Any companies still claiming laser etching increases bond strength 90%?

    #9589 Reply

    Robert Gregg DDS
    Spectator

    Just one……….;)

    #9588 Reply

    Glenn van As
    Spectator

    Which one is that ??

    :>)

    Must be the special sauce in the ingredients they use that allow for that 90% claim.

    Grin

    Glenn

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