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KMID : 0354619940060020301
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Journal Dankook Dental Research Institute
1994 Volume.6 No. 2 p.301 ~ p.314
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A comparative study on the effect of several enamel surface treatments prior to etching on bond strength and surface morphology
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Kim Yong-Kee
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Abstract
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The purpose of this study was to evaluate the effect of various enamel surface treatment methods prior to etching on the resin-to-enamel bond strength and surface morphology. The measurement of shear bond strength was done using Universal Testing
Machine and the surface structure was observed through Scanning Electron Microscope with the following results ;
1. Group with pumice prophylaxis demonstrated the highest mean value among the tested groups and Group III, I and IV in declined order respectively.
2. The fracture patterns observed mainly was an adhesive type with similar distribution in all groups with the characteristic higher frequency of cohesive type in Group II.
3. Pumice treated enamel surface showed quite similar surface structure to normal enamel surface whereas Group III and IV revealed some precipitation of the material which is assumed to be the reaction products of fluoride.
4. After acid etching, Group II showed a similar pattern of typical acid etching of normal enamel, while Group III and IV showed some remnants of the material which is assumed to be the reactio products of fluoride.
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