Statistical analysis (Potency) with calculation Continuous data will be described as means and standard deviations. Qualitative data will be expressed as frequencies and percentages. The Kolmogorov-Smirnov test will be used to evaluate the normality of data distribution. The Levene test will be used to analyze the homoscedasticity. Differences between preoperative and follow up data will be evaluated with the paired t test for homoscedastic and normally distributed data; otherwise, the nonparametric Wilcoxon-Mann-Whitney test will be used. Differences between groups will be evaluated with the unpaired t test for homoscedastic and normally distributed data; otherwise, the nonparametric Wilcoxon-Mann-Whitney test will be used. Pearson's correlation will be performed to investigate the relationships between continuous variables if they will be both normally distributed; otherwise, the Spearman rank correlation test will be used. Statistical analysis will be performed using SPSS® software (Version 15.0; SPSS Inc, Chicago, IL).