The aim of the study was to assess the relationship between personality traits, self-esteem and life satisfaction, and also the stress level, among dentists during the COVID-19 outbreak. In order to confirm our hypotheses, 310 active dentists aged 25-64 years who were practising during the first wave of COVID-19 in Poland were examined. The IPIP-BFM-20 self-report questionnaire was used to measure personality traits, the popular Rosenberg Self-Esteem Scale was used to assess self-esteem, the five-item Satisfaction with Life Scale was used to measure life satisfaction and the four-item version of the Perceived Stress Scale was used to measure stress. The dependent variable-stress-correlates negatively with traits in relation to the dimensions of extraversion (r = -0.17, p < 0.01), emotional stability (r = -0.35, p < 0.01) and intellect (r = -0.16, p < 0.01); it also has a negative correlation with self-esteem (r = -0.37, p < 0.01) and life satisfaction (r = -0.35, p < 0.01). Among the analysed variables, the highest correlations are observed for the following: self-esteem and emotional stability (r = 0.51, p < 0.01); self-esteem and life satisfaction (r = 0.49, p < 0.01); extraversion and intellect (r = 0.47, p < 0.01). Considering the measures of mediation relevance and pathway relevance, it can be assumed that both self-esteem and life satisfaction have a mediating function in the relationship between agreeableness, emotional stability and stress: the relationship between emotional stability and stress is negative whereas that between agreeableness and stress is positive.
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