Table 1. Prevalence of apical periodontitis according to age groups.

Age group (years)	All patients (n)	Patients with apical periodontitis (n)	Apical periodontitis prevalence (%)
12–19	20	3	15
20–29	46	18	39.1
30–39	40	22	55
40–49	28	18	64.3
50–59	47	25	53.2
60–69	26	19	73.1
70+	7	5	71.4
Total	214	110	51.4