11 Transversal slices (TSA)
Sirona Dental Systems GmbH
11.2 Patient positioning
Operating Instructions ORTHOPHOS XG
Plus
DS/Ceph
59 87 594 D 3352
94
D 3352.201.01.18.02
11.2
Patient positioning
General remarks on patient positioning
The following descriptions apply to all of the slice orien-
tations supplied.
Always position the patient according to the information
provided for the particular exposure program.
Please observe:
Center of the face or FH setting with the light localizer.
Cervical vertebrae stretched by having patient take a
small step towards the column.
Ask the patient to grasp the handles.
Have the patient bite into the indentation of the bite
block, placing his/her upper anterior teeth into the inden-
tation and pushing his/her lower anterior teeth forward
as far as possible, or placing his/her subnasale against
the contact segment).
Move the forehead support as far as possible up to the
patient’s forehead.
Close the temple supports.
For maxillary views, you must fit the temporoman-
dibular joint supports with the sterilizable contact
pads.
NOTE
i
We recommend that you perform a test cycle without ra-
diation with the “T” key prior to starting the exposure to
make sure that the tube assembly and sensor do not col-
lide with the patient’s head.
Mandibular anterior and canine teeth
When you enter a depth of up to and including 14 mm,
the patient head symbol remains in the FH position.
Fit the
yellow
bite block.
Position the patient's head according to the Frankfort
Horizontal FH.
The line displayed on the head symbol on the touch-
screen indicates the reflection line of the light localizer.
Mandibular molars
When you enter a depth of 15 mm or more, the patient
head symbol changes and is bent dorsally (reclined)
now.
Fit the
yellow
bite block.
Have the patient recline his/her head dorsally to the
point where the lower edge of the mandible is parallel to
the floor.
The line displayed on the head symbol on the touch-
screen is used here only for orientation.
In the TSA slice orientation, the submenu column dis-
plays an icon for preselecting the slice thickness.
The slice thickness is preset to 2 mm. You can also pre-
select slice thicknesses of
6 mm or 8 mm in this submenu.
Make sure that the TSA slice is at a right angle to the root
of the tooth.
6,7s
14mm
0°
FH
9,0s
15mm
2
0°
Lower edge
of mandible
Summary of Contents for Orthophos XG Plus DS/Ceph
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