BASIC TECHNIQUES Scanning, and Designing Flashcards
Traditional Workflow Disadvantages:
(6)
- Mold instability;
- Mold transport and packaging;
- Plaster pouring and solidification;
- Lacerations on margins;
- Contact between the tray and the teeth;
- Geometrical and dimensional
inconsistencies between the plaster model
and the real teeth.
Digital Workflow Advantages:
(5)
- Implementation of highly accurate models;
- Traditional workflow simplification;
- Possibility to create and periodically update a
database; - Dentitions for future interventions;
- Possibility to simulate surgery interventions
on the digital model.
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Intra-oral Scanning Devices In The Market
- CEREC – Dentsply-Sirona (Germany)
- iTero – Cadent (Israel)
- E4D – D4D Technologies (USA)
- Lava C.O.S. – 3M ESPE (USA)
- IOS Fast Scan – IOS Technologies
(USA) - MIA3D – Densys3D (Israel)
- DPI3D – Dimensional Photonics (USA)
- 3D Progress – MHT S.P.A. (Italy)
- Direct Scan – HINT–ELS (Germany)
- Trios – 3Shape (Denmark)
- Blue scans – I.A Tron3Ds (Austria)
- Plan scan – Planmeca (Finland)
- Condor – Remedent (Belgium)
- CS 3500 – Carestream Health (USA)
- …
I
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Intraoral Scanner Patents
(5)
q Triangulation Techniques
q Active Wave Front Sampling
q Confocal Laser Scanner Microscopy
q Optical Coherent Tomography
q Accordion Fringe Interferometry
Basic Requirements for Intraoral Scan
(3)
- Proper retract the lips and cheek;
- Dry and clean teeth;
- Machine position.
Intraoral Scan Methods
Triangulation/Active Wave Techniques
(CEREC Omnicam/Primescan, 3Shape Trios)
(2)
q Intraoral Regional Scan
q Intraoral Full Arch Scan
. Maxillary Arch Regional Scan
(4)
1 Palatial cusp
2 Palatial surface
3 Buccal cusp
4 Buccal surface
I. Mandibular Arch Regional Scan
(4)
Buccal cusp
2 Buccal surface
3 Lingual cusp
4 Lingual surface
II. Intraoral Full Arch Scan
* Scan Sequence: (e.g. Maxillary arch)
(8)
- Lingual (Terminal teeth to over midline);
- Occlusal;
- Buccal;
- Corner (Canine area);
- Same sequence for left side;
- Palatal (Optional);
- Bite (Left and right premolar area);
- Final check.
II. Maxillary Full Arch Scan
(8)
1 Palatial
2 Occlusal
3 Buccal
4
4 Corner 5
5 Connect Buccal 6
7 6 Connect Occlusal
7 Connect Palatial
8
8 Corner
II. Mandibular Full Arch Scan
(8)
1 Buccal
2 Occlusal
3 Lingual
4 Corner
5 Connect Buccal
6 Connect Occlusal
7 Connect Palatial
8 Corner
II. Full Arch Bite Scan
(3)
1 Premolar
2 Maxi. anterior
3 Premolar
steps
(3)
- scan the working jaw
- scan the opposing jaw
- scan the bite
the blank area indicates the
image is missing
refining steps (5)
- refine the position
- refine the shape
- refine the details
- adjust the contacts (occlusal)
- adjust the contacts (movement)