The palate mucosa is removed and a local hemostasis is carried out. The Rotterdam Palatal
Distractor is applied again. This time, however, the supporting plates sit directly on the bone.
The distractor is activated to a degree that the plate pins penetrate the bones. In order to plan
with how many turns the distraction protocol can start (see chapter 14 "During Distraction
(Distraction Phase)", page 37), the number of required activation turns must be noted.
An arrow on the patient screwdriver indicates the activation direction.
WARNING
Danger of system failure if the bone segments are not mobilized sufficiently!
Insufficient mobilization will result in higher forces acting upon the distraction system, which
could lead to deformation or fracture of the distraction system. Therefore, please note:
The bone segments to be distracted must be mobilized prior to distraction (corticotomy or
•
complete osteotomy). To verify sufficient mobilization, an activation test must be
performed intraoperatively on the implanted distraction system. The test activation must
cover at least 1 –3 mm and a complete osteotomy gap must be produced in the process.
Deformation of the distraction system must be prevented during the distraction process.
•
Finally, the distractor is secured on both sides of the premolar teeth using a stainless-steel
wire.
13
Prior to Distraction (Latency Phase)
Once the distraction system has been implanted, a latency period must be observed before
starting the distraction process. The length of the latency period depends on the indication and
must be determined by the surgeon. It usually covers approx. 7 days (depending on patient
and indication).
36
Instructions for Use
Rotterdam Palatal Distractor
V. 2.1