Table 1 Demographic data of included patients

Gender (male/female) (n)

7/5

8/4

6/6

Age (years, mean ± SD)

48 ± 8

52 ± 7

45 ± 10

Tooth position (first molar/second molar) (n)

8/4

10/2

9/3

Reason for extraction (residual root and crown/tooth fracture/chronic periapical lesion) (n)

6/4/2

5/5/2

6/3/3