一种通用粘接剂对不同CAD/CAM可切削材料的短期粘接成绩

Abstract

Abstract: Abstract: Objective To evaluate the initial effect of a kind of universal adhesive on resin bonding of three different types of CAD/CAM machinable materials. Methods 20 pieces of each kind of ceramics (yttria-stabilized tetragonal zirconia polycrystals, resin nanoceramics and lithium disilicate glass ceramics) were made, of which the former two groups were sandblasted with alumina and the latter group were subjected to HF acid etching. Each group of ceramics is subdivided into two subgroups, treating with a universal adhesive (SBU) or not (Ctr). The adhesive specimens were produced and after immersed in water for 24h, shear bond strength (SBS) and modes of failure were determined. Surface morphology of sandblasted zirconia ceramics and resin nanoceramics and HF acid-etched lithium disilicate glass ceramics were observed by using a scanning electron microscope (SEM). Results SEM observation showed that, the sandblasted zirconia ceramics and resin nanoceramics and HF acid-etched lithium disilicate glass ceramics exhibited rougher surface morphology after roughening treatment. The initial shear strength of three kinds of ceramics applying with universal adhesive was significantly enhanced than that of roughened one. Conclusion Application of the universal adhesive Single Bond Universal can enhance the bonding strength between zirconia ceramics, lithium disilicate glass ceramics, resin nanoceramics and resin.

Key words: universal adhesive, zirconia ceramics, resin nanoceramics , lithium disilicate glass ceramics

CLC Number:

R783.1

References

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Application of a kind of universal adhesive on initial bonding performance of different CAD/CAM machinable materials

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