Patient’s study number Implant area Real implant length (a) Radiographic implant length (b) Radiographic distance (implanttip-mandibular canal’s upper wall) (c) Real distance (implanttip-mandibular canal’s upper wall) (d)
1   47  8.0 mm     17 mm 2 mm 0.94 mm
2  47 6.0 mm    12 mm 0 mm 0 mm
3 37 9.5 mm    13 mm 2 mm 1.46 mm
4 36 9.5 mm   13 mm 1 mm 0.73 mm
5 37 10.0 mm   15 mm 0 mm 0 mm
6 36 12.0 mm   18.5 mm 2 mm 1.29 mm
7 36 10.0 mm   16 mm 1 mm 0.62 mm
8 47 10.0 mm   20 mm 2 mm 1 mm
9 47 10.0 mm  16 mm 0 mm 0 mm
10 46 10.0 mm  16 mm 1.5 mm 0.93 mm
11 46 10.0 mm 15.5 mm 1.5 mm 0.96 mm
12 47 12.0 mm 22 mm 2 mm 1.09 mm
13 37 10.0 mm 17 mm 2 mm 1.17 mm
14 36 9.5 mm 13 mm 1.5 mm 1.09 mm
15 45 8.0 mm 13 mm 1 mm 0.61 mm
16 46 11.0 mm 16 mm 1.5 mm 1.03 mm
17 47 10.0 mm 13 mm 0 mm 0 mm
18 47 6.0 mm 10 mm 1 mm 0.6 mm
19 46 8.0 mm 15 mm 2 mm 1.06 mm
20 37 10.0 mm 16.5 mm 1.5 mm 0.9 mm
21 46 6.0 mm 12 mm 2 mm 1 mm
22 47 8.0 mm 12 mm 0.5 mm 0.33 mm
23 36 9.5 mm 19 mm 1 mm 0.5 mm
24 35 11 mm 18 mm 1 mm 0.61 mm
37 10 mm 16.5 mm 0 mm 0 mm
25 47 11.0 mm 16 mm 1 mm 0.68 mm
26 37 12.0 mm 17.5 mm 2 mm 1.37 mm
27 46 10.0 mm 14 mm 0 mm 0 mm
28 35 10.0 mm 14 mm 1 mm 0.7 mm
29 37 10.0 mm 13 mm 0 mm 0 mm
Table 1: X-ray analysis of patients (n=29).