Research Article

Prevalence and Reasons for Tooth Loss in a Sample from a Dental Clinic in Brazil

Table 4

Prevalence (%) of extractions by age group and type of teeth.

Age groupTooth
Anterior
Premolar
Molar
Total
𝑁 (%) 𝑁 (%) 𝑁 (%) 𝑁

15–1933 (51.6)*31 (48.4)*64
20–243 (5.9)22 (43.1)26 (51.0)*51
25–295 (20.8)8 (33.3)11 (45.9)24
30–3411 (24.4)14 (31.1)20 (44.5)45
35–4433 (25.2)42 (32.1)56 (42.7)*131
45–5462 (38.0)54 (33.2)47 (28.8)163
55–6484 (46.7)*52 (28.9)44 (24.4)180
65–7469 (65.7)*25 (23.8)11 (10.5)105
75–8425 (67.6)*7 (18.9)5 (13.5)37

15–81292 (36.5)257 (32.1) 251 (31.4)800

Chi-square test ( 𝜒 2 ) = 𝑃 < 0 . 0 0 0 1 . * > 2.576 ( 𝛼 = 0 . 0 1 ) adjusted residual chi-square.