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Chapter 8150a worse impact on oral health. In addition to the OHIP-14 questions, patients responded to four relevant questions that covered pain experienced (rated on a 10-point scale), self-care applied, discomfort experienced, and the use of pain medications.Statistical analysisThe Shapiro-Wilk test was applied to verify the data distribution and normality. The data were not normally distributed, so nonparametric tests were used. Friedman two-way analysis for variance and a post hoc test was performed to investigate the change from baseline over 1-7 days after surgery. The Wilcoxon signed rank test was used to investigate the change between two time points (4 weeks (T8), 6 months (T9), or 1 year (T10) compared to baseline and the change per OHIP question between baseline (T0) and at least 1 year (T10). Correlations were analyzed by the Spearman rank correlation coefficient. The Kruskal-Wallis test was used to analyze the difference between the OHIP score and type of surgery or indication for surgery. A P-value < .05 was considered significant. SPSS Statistics (version 26.0 IBM Inc., Armonk, New York) for Mac was used for statistical analyses. ResultsDemographic dataA total of 94 patients were included in the study. Nine patients were excluded during the study because they did not respond to any of the questionnaires. The final data were based on answers from 85 patients (48 females and 37 males). The patient characteristics are given in Table 1. No difference was found between men and women in regards to age, type of surgery, indication for surgery, blood loss, or duration of surgery. Blood loss correlated with the duration of surgery (r = 0.542, P < .000, n = 83), with more blood loss occurring with a longer time in surgery. All data were anonymized.