Anesthesia local, biomarkers, blood pressure, c-reactive protein, child, child preschool, dental anxiety, epinephrine, healthy volunteers, heart rate, inflammation, infusions intravenous, male, norepinephrine, poverty, probiotics, psychometrics, salivary alpha-amylases, sensitivity and specificity, single-blind method, statistics nonparametric, students. This evidence concerns the gene CRP and dental phobia.