How do you select a patient to begin scanning on Trios?
- Select user
- New patient
- Enter patient info
- Select new case at bottom
Before scanning a crown in Trios, what do you have to select?
- Anatomy
- Type of restoration
- Material
- Shade
- Select tooth
- Delivery date
1/166
Looks like no tags are added yet.
Name | Mastery | Learn | Test | Matching | Spaced |
---|
No study sessions yet.
How do you select a patient to begin scanning on Trios?
- Select user
- New patient
- Enter patient info
- Select new case at bottom
Before scanning a crown in Trios, what do you have to select?
- Anatomy
- Type of restoration
- Material
- Shade
- Select tooth
- Delivery date
If you are doing 2 or more units, what do you need from the lab?
You need a master cast, however only prep model is needed from the lab
If you are doing a single unit crown, what do you need from the lab?
No models are needed, they can be fast track
What should be included in crown instructions/comments?
Faculty name:
Student name:
Models needed/not needed
What is the image count limitation for Trios?
1500-1800 images per arch
What is the mandibular scan pattern for Trios?
1. Occlusal
2. Lingual
3. Buccal
What is the maxillary scan pattern for Trios?
1. Occlusal
2. Buccal
3. Lingual
Should you have the dental light on during scanning?
No
How do you download a file from iTero onto the computer?
-Log into myiTero
- Look up scan under patients
- Click on scan
- Select Export
- Select "Open Shell", "File per Arch each arch teeth up", "STL no color"
- Export
What options should you choose when exporting Itero files onto a computer?
- Open shell
- File per arch teeth up
- STL no color
How do you upload Itero file into 3D printing software?
- Log in to Sprint ray
- Drag STL file from Itero download into Sprintray
- Select "Print setup"
- Select " Dental model"
- Use "Mesh edit" to trim model
- Select correct printer
- Select "Send to queue"
- Finish
What type of manufacturing is 3D printing?
Additive manufacturing
When was the first patent filed for 3D printing?
1980s
When did 3D printing in dentistry start?
in 1999
What are the 3D printable materials in dentistry designed for?
- Biocompatibilty
- Esthetics
- Safety in dental applications
What are some examples of materials used for 3D printing today?
- Wax
- Resins
- Metals
- Ceramics
What are some advantages of 3D printing?
- Fast
- High precision
- Personal customization
- Lower cost
- Simplify dental workflow
- Better than milled due to internal gap values
T or F
Both milled and 3D printing have the same internal gap values when making appliances and restorations.
False; 3D printing has a lower edge and internal gap value making it more accurate than milling
Compared to subtractive manufacturing, how is 3D printing better?
It is not as wasteful and therefore cheaper
What are some disadvantage of 3D printing?
- Cost of processing and material is high
- Time consuming post processing
- Investment $$
- Training and maintenance
How are 3D prints being used for medical modeling?
Replicas and models of CBCT scans can be used prior to surgery
How are 3D prints being used for drilling and cutting guides?
Used for implant guides
How are 3D prints being used for crown copings and partial denture frameworks?
3D printing can be used to fabricate metal structures by printing wax for lost wax technique or directly by printing metal
T or F
3D printing can help fabricate crowns and metal copings both indirectly for lost wax technique or directly by printing the metal immediately.
True
How are 3D prints being used for dental models for restorative dentistry?
Instead of impressions and pouring up cast models, we are able to print models from intraoral scans
How are 3D prints used in orthodontics?
- Invisalign aligners are printed
- Bonding splints can be printed for precise bracket placement
How are 3D prints being used to make implants?
3D printers are able to make novel implants with porous and rough surfaces which increase their success rate
What are the 3 different 3D printing technology categories?
- Power bed fusion
- Light curing
- Fused deposition modeling
How does power bed fusion 3D printing work?
There is a bed of substrate in a powdered form that is struck by a laser which sinters/fuses it. After cooling, it solidifies and is covered by substrate for another layer of sintering
What is PBF used for in dentistry?
- Titanium implants
- Mesh for bone grafting
- Cobalt chromium frames for prosthesis
T or F
PBF is metal printing.
True (also shows potential for ceramics)
What type of technology is used for implant printing?
PBF
What material is most suitable for PBF ?
Titanium Ti and its alloys
What are the 3 main types of light curing 3D printing technology?
- SLA (stereolithography)
- DLP (Digital light processing)
- PJ (photo jet)
How does light curing 3D printing work?
Uses photosensitive resin materials that are cured and molded under light irradiation
What was one of the earliest 3D printing technologies?
SLA light curing
How does SLA work?
a platform is submerged in a basin of liquid resin and a UV laser cures the resin on the platform. The platform then moves to submerge the new layer in resin and repeats
T or F
SLA platforms can move top-down or bottom-up.
True
Do you need to cure the model again after SLA ?
Yes
What kind of printer do we have at UOP?
DLP light curing 3D printer
Describe how DLP works?
There is a rectangular arrangement of mirrors that each represent one pixel. The number of mirrors dictates the resolution of the image. The resin/platform mechanism is the same as others
What are some advantages of DLP printing?
- an entire layer can be constructed by one single irradiation
- There is only one source of light
- More economic
What model of printer does UOP have?
SprintRay Pro Printers
How does Photo Jet (PJ) work?
Printhead moves along the X/Y axis and as photopolymer is sprayed form the printhead, UV light is emitted to cure it. Platform descends in the Z axis and process repeats.
What is a unique advantage that PJ has over other 3D printing technologies?
There is a large diversity of materials such as thermoplastics, resins, ceramics, and even zirconia
What is fused deposition modeling?
Most popular form of 3D printing, a nozzle melts filamentous thermoplastic material and dispenses it on an XY axes which then solidifies.
What materials are used with FDM?
Thermoplastics only. Ex. PLA, polycarbonate, and poluamide copolymers
What are some benefits of Dental photos?
- Patient record
- Tx planning
- Case presentation
- Patient education
How can photos help lab communication?
Effectively communicate
- Esthetics
- Shade matching
- Smile lines
- gingival shade
What is stump shade?
Shade of prep
Why is stump shade important?
When delivering ceramic crowns that are translucent, it is helpful to include stump shade so the technician is able to correctly color the restoration to match other teeth
Are photos PHI?
Yes
What must we do before we take patient photos?
- Patient must sign PHI/PRR form informing them of their rights and allowing us to use their pics for education
Are we allowed to take pictures of patients with our phones?
no
Are we allowed to take pictures off of UOP clinic sites?
no
Can you take pictures while waiting for your start check?
no
Can you remove the sim card from a camera?
no
What is the code for oral/facial photos?
D0350
If a camera isnt working, who should we talk to?
Dispensary
How long should it take to complete a series of photos?
No more than 30 minutes
Can you share your camera with another student ?
No, you will get your images mixed up
What are some things that should not be in photographs?
- Mirror edges
- Fingers
- Fog
- Saliva
- Lip retractors
Why are clear retractors better than metal retractors?
They are less visible
Are you able to take more than one photograph of each angle/shot?
Yes! It is encouraged as long as you go back at the end and only keep the best ones and delete bad ones
Are you able to edit photos via photoshop?
No
What is the sequence of photographs taken per UOP protocol?
1. Photograph patients ID
2. Extraoral views
3. Intraoral views without retractor
4. Intraoral views with retractors
5. Occlusal views
What are the larger mirrors used for?
Maxillary and mandibular occlusal shots
What are the thinner slimmer mirrors used for?
Buccal vestibule shots
What extra oral photos should be taken?
- Full face frontal
- Full face profile
What intraoral without retractor photos should we get?
- Smile facing forward
- Smile with Right lateral centered
- Smile with left lateral centered
What intraoral with retractor photos should we get?
- Centered both arch view
- Right lateral centered with right side retracted
- Left lateral centered with left side retracted
How should the patient be positioned when taking mandibular occlusal mirror photos?
Partially reclined with head tilted back
Where should you stand when taking mandibular occlusal mirror photos?
In front of the patient
What should not be seen in mirror pictures of teeth?
- Lips
- Lip retractor
- Mirror
- Nose
When was the first intra oral camera created?
1980s
What revolutionized intraoral cameras in the 90's?
The addition of an endoscopic hand piece with the intraoral camera
What are some features of intraoral cameras we have today?
- Macro and magnification modes
- Wireless
- Extraoral imaging
- Curing light for composite
- LED lighting
- Picture and video recording
- Fluorescence for detecting caries
How do intraoral cameras work?
- Sensor in the handpeice receive light
- That is converted into an electronic signal that is processed by the intraoral camera software
- This produces an image
What are some direct applications of IOC (intraoral cameras)?
- Diagnosis of caries
- Diagnosis of plaque, calculus, and gingival inflammation
- Oral medicine
What are some indirect applications of IOC (intraoral cameras)?
- Train patients to maintain hygiene
- Demonstrate oral conditions to patients
What IOC is used at UOP?
Mouthwatch
T or F
Mouthwatch is compatible with windows, android, but not macs.
False; It is compatible with macs
Where do you get the mouthwatch camera in clinic?
The dispensary
How do you set up Mouthwatch in the operatory?
Wiper the camera down, put a sleeve on the camera, plug the camera into the USB port
How do you pull up the radiograph template to take intraoral pictures?
- Select patient
- Xray tab
- Select "Pacific Miscellaneous - Photography template"
- Click the 4 square icon next to the menu
- Template pops up
How do you activate the mouthwatch to begin taking photos?
- Press the activate capture button
- Button should turn green
- Press the button on the mouthwatch wand to take a picture
How do you move the image just taken to the template when using mouthwatch?
- Press release frame OR
- Press the button on the wand again
How do you delete an image after it was taken on mouthwatch?
Check the green checkmark and turn it into an X
How do you move the photos taken with mouthwatch into the template?
Press "End session"
What are the different types of stains on teeth?
Extrinsic and Intrinsic
What are extrinsic stains?
Stains on the external surface of teeth
Does whitening work on extrinsic stains?
No, you need them instrumented to remove the stains
What are intrinsic stains?
Stains incorporated into the tooth's surface
T or F
Only the layer of tooth that is touching the whitening solution will get white.
False; hydrogren peroxide penetrates into the tooth and is able to whiten deep into the surface of the tooth
Is it better to paint a tooth with peroxide or soak a tooth with peroxide?
Soaking the tooth will provide better esthetic results
What part of the tooth whitens first and why?
The incisal edge, due to it being primarily enamel and more translucent than the other areas of the tooth
Where does most of the tooth's color come from?
Dentin
What are some patient factors that affect whitening?
- Age
- Diet
- Start shade of teeth
- Type of staining
What are some whitening factors that affect whitening?
- Peroxide formula
- Concentration of peroxide
- Contact time of peroxide