06/2009 SM731_K2200_01_en
6-7
Tables of Exposure Times
The following exposure timetables were established with a unit equipped with
a standard cone with a focus-to-skin distance of 20 cm (8 inches).
70kV – 7mA Cone 20 cm (8 in.) 60kV – 7mA Cone 20 cm (8 in.)
Maxillary Child Adult Large Maxillary Child Adult Large
Incisor / Bicuspid 0.119 0.180 0.227 Incisor / Bicuspid 0.238 0.360 0.454
Premolar 0.152 0.230 0.290 Premolar 0.304 0.460 0.580
Molar 0.178 0.270 0.340 Molar 0.356 0.540 0.680
Mandibular Child Adult Large Mandibular Child Adult Large
Incisor / Bicuspid 0.099 0.150 0.189 Incisor / Bicuspid 0.198 0.300 0.378
Premolar 0.106 0.160 0.202 Premolar 0.211 0.320 0.403
Molar 0.119 0.180 0.227 Molar 0.238 0.360 0.454
Bitewing Child Adult Large Bitewing Child Adult Large
Anterior 0.099 0.150 0.189 Anterior 0.198 0.300 0.378
Posterior 0.119 0.180 0.227 Posterior 0.238 0.360 0.454
Occlusal Child Adult Large Occlusal Child Adult Large
0.205 0.310 0.391
0.409 0.620 0.781
Table 7: Exposure times in seconds for class D-Speed films
Setting Correction Coefficient
S 01 - 92 % 0.08
S 02 - 90 % 0.10
S 03 - 88 % 0.125
S 04 - 84 % 0.16
S 05 - 80 % 0.20
S 06 - 75 % 0.25
S 07 - 68 % 0.31
S 08 - 60 % 0.40
S 09 - 50 % 0.50
S 10 - 37 % 0.63
S 11 - 21 % 0.79
S 12 0 % 1.00
S 13 + 26 % 1.26
S 14 + 59 % 1.59
S 15 + 100 % 2.00
S 16 + 152% 2.52
Table 8: Exposure time corrections depending on selected setting
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