Treatment effects on microtensile bond strength of repaired composite

Treatment effects on microtensile bond strength of repaired composite

An in-vitro study

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The adage goes "old is gold". Composite resin also holds true to this dictum. But that does not stop it from failing. Reasons for failure could be diverse and the solution lies in replacement or repair. While the usual protocol is the replacement of the entire old restoration, repairing is also a viable option; one that prevents further trauma to the delicate pulp. One challenge however still remains. Compared to a recently placed restoration, aged composite does not have any free -C=C- bonds, creating difficulty in bonding of the new restorative material to the aged restoration. Different met...