What to send:
– Prescription form;
– CT/CBCT Scan (DICOM format);
– Model, impression or optical scan of the surface in .stl or .obj format;
– Bite Registration (Enough Occlusal Clearance for final restoration).
CT/CBCT scan data requirements:
For edentulous patient (3 or more teeth):
– CT/CBCT examination should be taken using a bite fork/block (out of occlusion).
– All removable prosthetics should be removed.
If the patient has a large distal defect(s), fixed objects which cause streak artifacts (f.e. radiopaque dental restorations or orthodontic brackets) or not radio-opaque fixed prosthetic(s), the CBCT examination should be taken wearing a radiolucent impression tray filled with impression material (A – or C – silicon).
For Fully Edentulous Patients:
– CBCT examination should be taken wearing a radiolucent impression tray filled with impression material (A – or C – silicon);
– CBCT examination should be taken using “Dual scan protocol”:
• Ensure denture fits well and has Hard-liner.
• Place 6 adhesive Scan Flag Markers evenly along the Lingual or Palatal of the Denture.
• Take a CBCT Scan of the patient in Occlusion, Wearing the Denture with Markers in Place.
• Then Take Another CBCT Scan of the Marked Denture Out of the Mouth resting on foam or cotton.
The pictures should be clearly visualized, including both rows of teeth, corresponding bone structures and areas of interest.
Before sending the impressions to the laboratory perform its assessment.
– clear display of all the teeth, gingival grooves, alveolar bone and surrounding soft tissues up to transitory fold;
– absence of pores in the impression;
– good adhesion of the impression material to the tray;
– the inner surface of the impression should not contain thinned or bowed areas;
– the impression should be free of saliva and should not contain traces of blood.
The impression should be decontaminated through disinfection immediately after removal from the patient`s mouth.
Stone model (with no defects or voids)
.stl file generated from an intraoral scan (with no tears or overlapping layers);
If you do not have access to an intraoral scanner a dental lab may be able to create a .stl file from your traditional impression or stone model using a benchtop scanner.
Surgical (drilling) protocol:
Pilot-, Full- and various intermediate protocols are possible.