8.4
X-ray unit settings
A setting of 60 kV is preferred provided it can be set on the X-ray unit.
The standard exposure values for F-speed film (e. g. Kodak Insight) can be used.
Intraoral X-ray units for an adult patient
The following table shows the standard values for the exposure time and the dose area product of a
PSP for an adult patient.
DC emitter, 7 mA
Tube length 20 cm
without X-ray field
limitation
X-ray field limitation
2x3
X-ray field limitation
3x4
60 kV
mGycm
2
60 kV
mGycm
2
60 kV
mGycm
2
Incisor
0.10 s
18.3
0.10 s
3.8
0.10 s
7.7
Premolar
0.14 s
25.6
0.14 s
5.4
0.14 s
10.8
Molar
0.19 s
34.8
0.19 s
7.3
0.19 s
14.7
Bitewings
0.21 s
38.4
0.21 s
8.1
0.20 s
15.5
DC emitter, 6 mA
Tube length 30 cm
without X-ray field
limitation
X-ray field limitation
2x3
X-ray field limitation
3x4
60 kV
mGycm
2
60 kV
mGycm
2
60 kV
mGycm
2
Incisor
0.15 s
13.7
0.15 s
4.9
0.15 s
5.8
Premolar
0.20 s
18.2
0.20 s
3.8
0.20 s
7.7
Molar
0.27 s
24.6
0.27 s
5.2
0.27 s
10.4
Bitewings
0.28 s
25.5
0.29 s
5.6
0.28 s
10.8
❯
Check and adjust the specific X-ray unit in accordance with the standard values.
Intraoral X-ray units for a pediatric patient
The following table shows the standard values for the exposure time and the dose area product of a
PSP for a pediatric patient.
DC emitter, 7 mA
Tube length 20 cm
without X-ray field
limitation
X-ray field limitation
2x3
X-ray field limitation
3x4
60 kV
mGycm
2
60 kV
mGycm
2
60 kV
mGycm
2
Incisor
0.07 s
12.8
0.07 s
2.7
0.07 s
5.4
Premolar
0.09 s
16.4
0.09 s
3.4
0.09 s
6.9
Molar
0.13 s
23.8
0.13 s
5.0
0.13 s
10.1
Bitewings
0.15 s
27.4
0.13 s
5.0
0.13 s
10.1
Installation
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US