Handling The Sensor; Correct Sensor Positioning Using The Parallering Technique - KaVo FS Ergo User And Installation Manual

5.4 Handling the sensor

The sensor is designed for patient comfort by allowing the sensor bend slightly to follow
the patient's arch shape.
WARNING! Under no circumstances should the dental professional hold the
dental sensor by hand during X-ray exposure.
CAUTION! It is recommended no to twist the sensor unnecessarily to avoid its
bending beyond the bending capability. The maximum tolerance of the sensor for
bending is only a few millimeters.
5.5 Correct sensor positioning using the parallering
technique
NOTICE! Use the FS Ergo sensor holders for best positioning. Correct placement
of the sensor in the patient's mouth is essential for acceptable X-ray image
quality.
The sensor is used in combination with the supplied rings and sensor holders using the
paralleling technique. This technique places the sensor in the mouth so that it is parallel
to the long axis of the tooth and perpendicular to the interproximal spaces. By drawing
an imaginary line through the occlusal/incisal surfaces (occlusal line) of the teeth to
be X-rayed, and placing the sensor parallel to this line, it will be perpendicular to the
interproximal spaces.
To achieve parallel positioning, the sensor/holder must be positioned away from the
lingual/palatal surface and located in the deeper areas of the mouth in all areas except
for mandibular molars.
Mandibular incisor, canine, or cuspid
FS Ergo Sensor
Place the sensor/holder so that it is parallel to the roots of the
teeth.
Place the sensor either under the tongue or over the tongue
so that it is comfortable for the patient. If there are large
mandibular tori, place the sensor/holder behind the tori, even
if it is in the first molar area.
• Ask the patient to bite on the notches on the sensor holder
to keep the sensor holder in place.
• If the sensor holder does not remain parallel to the roots
of the incisors, bisect the angle. If the incisal edges are
routinely missing from the images, place a cotton roll
between the tooth and the holder.
• Verify that the sensor holder is parallel to the roots.
5 Using the sensor
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