KaVo DEXIS Titanium Manuel De L'utilisateur page 29

Cl i n ic al U se of the D E X I S Tita n i um S e ns o r H o l de rs
The DEXIS Titanium sensor, in combination with the supplied rings and
holders, uses the paralleling technique. This technique places the sensor
in the mouth so that it is parallel to the long axis of the tooth and perpen-
dicular 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 inter-
proximal 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
Position the sensor/holder so that it is parallel to the roots of the teeth.
Place either under the tongue or over the tongue, whichever is most com-
fortable for the patient. If large mandibular tori are present, position the
sensor/holder behind the tori, even if it is in the first molar area. Ask the
patient to close end-to-end in order to maintain the placement. In the
event that the holder does not remain parallel to the roots of the incisors,
bisect your angle. Should the incisal edges routinely be missing from your
images, place a cotton roll or flap between the tooth and the holder and/
or verify that the sensor holder is parallel to the roots.
Mandibular Bicuspid, Premolar, or Molar
Position the sensor/holder so that it is parallel to the roots of the teeth.
Place either under or over the tongue, whichever is most comfortable for
the patient. Once you establish that the sensor/holder is parallel to the
roots and parallel to the occlusal line, move the sensor/holder to the mid-
line. Ask the patient to close. In the event that the holder does not remain
parallel to the roots of the premolars, bisect your angle.
Maxillary Incisor, Canine, or Cuspid
Position the sensor/holder so that it is parallel to the roots of the teeth.
Once you establish that the sensor/holder is parallel to the roots, move
the sensor/holder toward the center of the palate. Ask the patient to close
end-to-end in order to maintain the placement. In the event that the holder
does not remain parallel to the roots, bisect your angle. If a large maxillary
torus is present and you are unable to place the sensor/holder in a tradi-
tional position, the sensor/holder must be placed on the torus as you
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