HATCH X-RAY Operating Manual
32
Anatomy
kV mA
As per R20
chart Time
(mS)
Reference dose for
different loading
factors
Dose
Meter
Reading
(mR)
Dose
Meter
Reading
(mR)
Cone
Cone
Short Long
Short
Long
Adult
Bitewing
70
6
140
140
11.93
11.93
Endodontic
Incisors
Maxilla
70
6
125
140
10.56
11.93
Mandible
70
6
125
125
10.56
10.56
Canine
Maxilla
70
6
160
160
13.65
13.65
Mandible
70
6
140
160
11.93
13.65
Molar
Maxilla
70
6
140
140
11.93
11.93
Mandible
70
6
140
140
11.93
11.93
Normal
Exposure
Incisors
Maxilla
70
6
125
140
10.56
11.93
Mandible
70
6
125
125
10.56
10.56
Canine
Maxilla
70
6
160
160
13.65
13.65
Mandible
70
6
140
160
11.9.3
13.65
Molar
Maxilla
70
6
140
140
11.93
11.93
Mandible
70
6
140
140
11.93
11.93
Occlusal
Maxilla
70
6
140
140
11.93
11.93
Mandible
70
6
140
140
11.93
11.93
Child
Bitewing
70
8
90
90
7.65
7.65
Endodontic
Incisors
Maxilla
70
6
110
110
9.35
9.35
Mandible
70
8
80
80
6.80
6.80
Canine
Maxilla
70
6
125
125
10.56
10.56
Mandible
70
6
125
125
10.56
10.56
Molar
Maxilla
70
6
125
125
10.56
10.56
Mandible
70
6
125
125
10.56
10.56
Normal
Exposure
Incisors
Maxilla
70
6
110
125
7.65
7.65
Mandible
70
8
90
90
10.15
10.15
Canine
Maxilla
70
6
125
125
10.56
10.56
Mandible
70
6
125
125
10.56
10.56
Molar
Maxilla
70
6
125
125
10.56
10.56
Mandible
70
6
125
125
10.56
10.56
Occlusal
Maxilla
70
6
125
125
10.56
10.56
Mandible
70
6
125
125
10.56
10.56
Table 4 : Default exposure values for short / long cone – Mode 2
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