11 Transversal slices (TSA)
Sirona Dental Systems GmbH
11.1 Preparing a TSA exposure
Operating Instructions ORTHOPHOS XG
Plus
DS/Ceph
59 87 594 D 3352
88
D 3352.201.01.18.02
PAN image
For better assessment of the anatomical situation you
capture a PAN image first.
Measurement by means of the TSA scale
•
Measure the depth from the anterior teeth to the
tooth or region to be X-rayed in the mandible or the
maxilla using the TSA scale.
•
This measurement must be taken very precisely in
order obtain a good result.
ATTENTION
Thoroughly disinfect the TSA scale before using it, e.g.
by spray disinfection.
Position the TSA scale (1) in the oral cavity so that its
wide zero point begins at the center of the tooth to be
examined in the mandible or maxilla. Turn the scale over
when measuring the mandible (scale facing down).
Slide the measuring caliper (2) up to the maxillary ante-
rior teeth when measuring the maxilla and up to the man-
dibular anterior teeth when measuring the mandible.
NOTE
i
The patient's overbite must be taken into account when
placing the measuring caliper against his/her mandibular
or maxillary anterior teeth.
On patients without anterior teeth, slide the measuring
adapter (3) with the subnasal contact segment up to a
point beneath the nose.
Remove the TSA scale from the oral cavity and read and
remember the distance from the scale.
NOTE
i
When positioning the patient for TSA, a possible anoma-
ly of his/her anterior teeth must be taken into account.
This is done by placing the patient’s anterior teeth (upper
or lower jaw) in the corresponding indentation of the bite
block. Otherwise the measured distance will not match
the patient’s actual position.
The universal bite block also facilitates this procedure.
1
7
60
50
40
30
20
100
90
8
1
70
5
40
30
20
100
90
80
60
50
40
30
20
10
90 90
80
70
100
60
50
40
30
20
1
90
80
70
100
1
1
70
60
5
4
30
20
100
90
90
80
0
60
90
2
3
1
2
Measurement of the maxilla
Measurement of the lower jaw
Summary of Contents for Orthophos XG Plus DS/Ceph
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