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The effect of 35% H2O2 and 22%carbamide peroxide on compressive strength of composite resin | ||
| Journal of baghdad college of dentistry | ||
| Article 1, Volume 23, Issue 4, 2011, Pages 16-19 | ||
| Authors | ||
| Majida K.W. AL-Hashimi; Aliaa M. Jabbar | ||
| Abstract | ||
| Back ground: The compressive strength of composite resin may be affected by bleaching agent. This study was conducted to evaluate the effect of two different bleaching agents; at home (22% carbamide peroxide) and in office; light activated (35% hydrogen peroxide) bleaching agent on the compressive strength of light cured composite resin; spectrum (submicron hybrid composite). Material and methods: A total number of 20 samples were prepared,10 samples for each type of bleaching agent which were divided in to 2 groups; first group was subjected to at-home bleaching for one day. The second group was subjected to at-home bleaching for one week, The third group was subjected to the in-office (35% H2O2) for one day. The forth group was subjected to in-office bleaching for three days. Results: There were statistically significant differences between the tested groups (p=0.048). Highly significant reduction of the compressive strength of composite was observed subsequent to treatment with H2O2 for three times. Conclusion: Reduced compressive strength was detected in composite when it was subjected to bleaching process with H2O2 carbamide peroxide. | ||
| Keywords | ||
| bleaching; hydrogen peroxide; carbamide peroxide; compressive strength | ||
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