Statistical analysis
tooth
REGRESSION
Data analysis was carried out using SPSS (28.0, SPSS Inc., NY, USA). Descriptive statistics for BF and COS depth at different time intervals were calculated. The Shapiro–Wilk test was applied to assess the normality of numeric data, and the result indicated that data were not normally distributed. The Wilcoxon signed-rank test was applied to detect differences between the right and left sides. The non-parametric Friedman test with a pairwise comparison of related samples and Bonferroni correction for multiple tests was applied to examine within-group differences in BF at the different time points. Kruskal–Wallis H test was used to detect differences between groups (AW groups and type of force subgroups). Linear regression analysis was applied to determine any association between BF changes within the first 20 min and the first 48 h of force application and AW size, type of force, tooth type, and the COS depth change. The 