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KMID : 0988420020140030235
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Journal of Dental Science (C.N.U.)
2002 Volume.14 No. 3 p.235 ~ p.242
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The Effect of Temporary Cement and Desensitizer on the Bond Strength of Luting Cements
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Abstract
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This study investigated the effect of temporary cement and desensitizer on the bond strength of luting cements.
Total 96 dentin specimens were divided Into two groups with and without temporary cementation. For temporary cement-treated group. specimens were cemented with Temp-bond^® and all specimens were stored in dlstilled water at 37℃ for 7days.
Each group was further divided into 3 subgroups with Gluma^®, One-step^® application and without desensitizer. After desensitizer application, Ni-Cr specimens were luted to dentin surface with Panavia-F^® and Vitremer^® Specimens were placed in distilled water at 37℃ for 24 hours and shear bond strength between metal and dentin was measured by a universal testing machine
The results were as follows :
1. In Panavia-F^® cemented groups. the combination of One-step^® without temporary cement showed the greatest strength. Among the desensitizer types, One-step^® showed the highest bond strength. followed by No-desensitizer, Gluma^®.
2. In Vitremerff cemented groups, the combination of no temporary cement and witllout desensitizer showed the greatest bond strength. Among the desensitizer types, No-desensitizer group showed the highest bond strength.
3. The use of Gluma^® significantly reduced the shear bond strength in Panavia-F^® and Vitremer^® groups.
4. All temporary cement-treated groups showed a significant lower shear bond strength than without temporary cement groups.
5. Desensitizer application significantly influenced the bond strellgth of the resin cement and resin modified glass ionomer cement.
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