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Percentage (%) of failure mode.
| Composite | Failure mode | ||
|---|---|---|---|
| Cohesive | Adhesive | Mixed | |
| Filtek Z350 XT | 0 (0) | 80 (8) | 20 (2) |
| Filtek Z350 XT Flow | 0 (0) | 80 (8) | 20 (2) |
| X-tra fil | 0 (0) | 90 (9) | 10 (1) |
The modes of failure were classified as follows: adhesive failure, cohesive failure within the composite, or mixed failure involving adhesive, dentin, and composite. The number of the specimens is given in parentheses.
