氧化锌丁香油对3种永久粘固剂剪切强度影响的研究

Abstract

Abstract: Objective To investigate the influence of zinc oxide eugenol (ZOE) on shear bond strength of three kinds of permanent cement when bonded to dentin. Methods The 60 premolars were made into test pieces and embedded with resin. One side was exposed as a test surface, with its enamel removed and superficial dentin polished with sandpaper. Specimens were divided into glass ionomer group (group 1), a resinmodified glass ionomer group (group 2), and a resin binder group (group 3). Each group was further divided into a control group (group A), and ZOE group (group B), each group containing 10 samples. Specimens with resin blocks (φ4 mm) were tested in the universal testing machine. And surface morphology was observed with a scanning microscope. Results Group 3 was influenced by zinc oxide eugenol （(3.22 ± 1.47) MPa vs. (1.22 ± 0.35) MPa, P=0.001）, while group1 and 2 were not. Conclusion Pretreatment of the dentin with ZOE temporary cement has an adverse effect on the resin cement but not on the glass ionomer and resinmodified glass ionomer.

Key words: zinc oxide eugenol, permanent cement, shear bond strength, SEM

CLC Number:

R783.1

References

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The effect of zinc oxide eugenol cement on the shear bond strength of three permanent cements

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