Owandy Radiology Ow-RX, User Manual

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USER MANUAL
System use
Ow-RX
(Rev. 6)
52
8.5 Exposure techniques
This paragraph describes the various techniques used in general for
intra-oral exposure.
8.5.1 Bisector technique
Incidence of the X-ray beam – vertical angle
In order to obtain a real image of the tooth, the ray must be
perpendicular to the bisector of the angle formed by the longitudinal axis
of the tooth and by the film.
After positioning the X-ray beam and the patient’s head based on these
criteria, an average vertical incidence can be applied for each area. The
incidence angle of the X-ray beam can be correctly measured using the
graduated scale located on the tube-head.
Figure 16
Legend Figure 16:
A – Longitudinal axis of the tooth
B – Bisector
C
– Film surface
D – Occlusal surface
RC
– X-ray beam