download protocol

data acquisition

total edentulism

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procedures

Toltac® System

data acquisition protocol

Below here the Toltac® protocol for data acquisition is described in detail. It is a very easy and intuitive procedure to follow step by step in order to allow a correct planning.

1. Diagnostic template.

The diagnostic template must include a structure allowing the template positioning between the dental arches and radioopaque references preferably far to one another and positioned on different levels; it is very important that they are positioned so that during the CBCT scanning they remain completely separate from the projection of the patient's dental arches, in order to prevent scattering effects coming from prosthetic or conservative components of the dental arches.

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2. Relining the diagnostic template

Apply a little amount of elastomere impression material on both surfaces of the diagnostic template, carefully preventing contacts of the elastomere with the radioopaque elements of the template.

If in the Dental Office is available a CBCT machine it is preferable to take the CBCT scan to the patient asking him to keep in the mouth the just relined diagnostic template, and remove it only after the CBCT. If the patient is sent to a radiologist, he must carry the relined diagnostic template. The radiologist must be carefully check the correct positioning of the template during the exam.

Please remind the patient to bring back the template for the scannings (see below).

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Relined diagnostic template

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3. CBCT exam

The CBCT can be done in standard resolution, with a FOV wide enough to include all the bone structures of the studied arch and all the radioopaque parts of the diagnostic template. The radiologist will provide a set of axial DICOM images with 512x512 matrix for the data upload to the virtual planning software.

4. Impressions and creation of plaster models

Best if taken with precision elastomer impression materials, but also good alginate impression are OK. The plaster models are obtained from the impressions with the normal procedure. Preferably make models with an abundant base, better if with the incision of a few niches in order to make easier the matching when uploading the scans to Codiagnostix™ or other planning softwares.

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scan of a model with nicks

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5. Diagnostic wax up

The missing elements of the arch to treat must be replaced with a normal diagnostic wax up, unless it is available a software able to provide a virtual diagnostic wax up from the model scan.

6. Scan of the models

For a correct planning, are needed the following scans:

  • edentulous model

  • edentulous model with diagnostic template

  • model with diagnostic wax up.

IMPORTANT. Scans must compulsorily be made on plaster models with laboratory precision scanners, NEVER with intraoral optical scanners. Scans must include also the model's base and its niches, if present (see above).

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edentulous model

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template on the  model

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model with diagnostic wax up

Axial DICOM images from CBCT with 512 x 512 matrix and the three scans above mentioned are the informations that compulsorily must be obtained; unless these informations it is impossible to proceed to the planning according theToltac® protocol.

procedures