Dental evaluation is helpful in the differentiation of functional heartburn and gastroesophageal reflux disease

Figure 1 Mean impedance values in patients with gastroesophageal reflux disease and those with functional heartburn. GERD: Gastroesophageal reflux disease; FHB: Functional heartburn; LES: Lower esophageal sphincter.

Figure 2 Mean impedance values in patients with or without dental erosion and periodontal disease. The asterisk (*) the curve of “Both” group is significantly different from the others, and similar to the one in patients with gastroesophageal reflux disease. PD: Periodontal disease; DE: Dental erosion; LES: Lower esophageal sphincter.