Final Review- Lecture 3 Flashcards
(27 cards)
Challengers to digital implant impressions include:
- pre-op scan
- scan body
- emergence profile scan
With digital implant treatment planning, both our planning software and what we can see in the mouth are extremely accurate BUT:
the correlation between them is the most important thing
Two most important aspects of digital implant treatment planning to correlation:
- planning software
- clinical evidence
Some examples of implant plaming software include:
- 3Shape
- Simplant
- Blueskybio
- coDiagnostiX
- DTX studio
CBCT indications in implant dentistry are used in both:
- preoperative analysis
- postoperative analysis
List the CBCT indications for pre-op analysis in implant dentistry:
- anatomic analysis
- site development using grafts
- computer-assisted treatment planning
List the CBCT indications for post-op analysis in implant dentistry:
- diagnosing complications
- verifying implant placement
The intraoral scan is used to:
create the intaglio of an implant guide
The CBCT allows us to visualize the:
hard tissue to plan the procedure
What is the most important part of any digital workflow?
ALIGNMENT (between the scan of the mouth and the CBCT)
For implant treatment planning of a digital case, the requirements are:
- STL of an intraoral scan
- DICOM volume of the site
What do the following colors represent?
Yellow:
Red:
Green:
Blue:
White:
Yellow: path of drill
Red: implants
Green: implant sleeve
Blue: intraoral scan
What if we are doing an implant overdenture? Can we align an intraoral scan to a CBCT?
No- CBCTs only visualize hard tissue so there is no way to align the soft tissue scan
Because we cannot align a CBCT scan with an intraoral scan for an implant overdenture, how can we align these two aspects?
Using a denture with fiduciary markers
Why might we put fiduciary markers on a denture for aligning CBCT scan with an intraoral scan for an implant overdenture?
Because the denture is not very radiopaque
(we can use these radiopaque markers, and then take two CBCTs, one with the patient wearing the denture, and one of just the denture)
What is the CBCT of just the denture used for?
Used to create the intaglio of the guide because there is high contrast between the denture and the surrounding air (or foam spacer)
Implant treatment planning edentulous case requirements:
- DICOM of the denture with radiographic indicators
- DICOM volume of the site with patient wearing the denture with indicators
If we want to use a digital workflow, then we need to capture:
the location of the implant
Designed for specific implants and used similar to impression copings for single implants:
Scan bodies
Many studies have shown acceptable accuracy with intraoral scanning for:
single implants
What are the limitations of scan bodies?
With full-arch prosthesis, intraoral scanning studies habe shown marginal discrepancies
With full-arch prosthesis, intraoral scanning studies have shown marginal discrepancies greater than ____ which ultimately lead to _____
150 micrometers; future complications
A technique that uses multiple 2D images to create a precise 3D digital model of the dental area, including the teeth, gums and surrounding tissues:
Photogrammetry
_________ are specific to each photogrammetry systems and are encoded with targets that allow the camera to transpose multiple images to determine the exact implant position
Photogrammetry scan bodies
