Statistical analysis
Differences among groups in excisional model, hydroxyproline
level test were evaluated by Kruskal–Wallis variance analysis.
When the P-value from the Kruskal–Wallis test statistics was
statistically significant, multiple comparison tests were used to
know differences. Student’s t-test was used for evaluation of
mechanical test results. Comparison among days was assessed by
Mann–Whitney U-test. The Bonferroni correction was applied for
all possible multiple comparisons. SPSS 11.5 (SPSS Inc., Chicago, IL,
USA) was used for statistical analysis. A P-value was set at 0.05.