Recommended Resin: DT
3D Printing Denture with AccuFab Printers
Shining 3D currently offers several material choice for denture application. Denture base resin DT resin is a high flexural strength, low water absorption material for long-term retainers and nightguards.
This material is suggested using HyperClear resin tank from AccuFab-CEL for minimum polishing on support generation area to high optical transparency and resist discolouration over time.
This application guide demonstrates each step from 3D scanning to 3D printing on AccuFab printers with normal resin tank and HyperClear resin tank.
Use the current workflow to ensure a high satisfaction result.
Scan
Dental design software requires a digital impression of the patient’s anatomy in order to design a splint, retainer or nightguard. To acquire this data, scan a patient directly with Aoralscan intraoral scanners or a poured model with AutoScan desktop scanners.
Design
There are several dental software options providing by Shining 3D. In this application guide, we will work through using Shining 3D self-developed splint design software CreSplint, or we provide options to use exocad or Maestro 3D for more advanced professional design.
There are also 3rd party design platform we provide from Shining 3D Dental Cloud to give our users more options for creating a design.
Print *Use the latest AccuWare and FabWare version
Manually added support (Denture Support)
Place the denture vertically or in 10-30 degrees angle to ensure the accuracy and decrease the post-processing job. Placing in optimum printing area to make sure a good printing quality.
If you choose to layout vertically, you could delete most of the support but keep the support on incisor for decreasing labor afterwards.
Please manually remove the support in all teeth fitting surface as shown.
In the boundary area as shown in red, please manually add more support for accuracy and printability.
Please manually delete all the support in blue on the fitting surface and keep the labial area unchanged in yellow.
*If there is too less support added, this may cause printing failure. Support adjustment would need some printing experience. You could also check the printability on the right column for a secure printing.
Automatically added support- one click printing
Choose one-click printing type- denture after you import the data and find in data-processing stage. The automatic adding support will give you an optimum option for adding.
You could double check by pausing the one-click printing by minorly manual adjust the support to the most satisfied stage. If you would like to do the manual adjustment, please refer to the information above.
Post-process
Part removal
You can use FabWash or scrapping tools to remove the printed parts.
Washing
FabWash
Please place the ceramic platform for cutting on FabWash first.
If you use IPA with ≥75%, we suggest using the FabWash pre-set time.
If you use IPA with ≥90%, we suggest decreasing 1 or 2 min.
Hand Wash
Please use soft brush for cleaning, prevent hard brush which may cause surface damage
Please wash in ≥75% IPA for 1-2 min
Drying
Blow to dry the model and make sure there is no resin residues and alcohol staying on surface.
Residues remain will be shown in reflection under room light.
Please repeat the cleaning process if the above is shown.
Standard resin tank easy post-processing
Support needs to be removed by griding tools in low speed for easy operation afterwards. By preventing the damage or scratching to denture, we suggest users to cut in 1-2 mm to surface.
After removing the support, please use rough and infe grinding tools on surface until the surface has no protruding points. Use 15 1μm polishing head at 20,000-30,000rpm/min for a rough polish and a 107 μm polishing head at 10,000-20,000rpm/min for a finer polish.
Improve the reliability
After the denture is fully dried, please make sure use a unlined brush to prevent the air bubble when stitching the liquid. Use optimum amount of denture resin with the mix of GC GF71 to imitate erythema, evenly brush onto the printed denture base.
Pre-curing the denture
Dip an optimum amount of mixed resin an brush onto the denture base, cure while brushing.
Caution: Only brush onto the labial area and cure only 10s for each part pre-curing.
Attaching the teeth
Place an optimum amount of denture resin on the teeth fitting surface and margin line, to prevent air bubbles during teeth attachment. Paired the correct bridge onto the column and make sure no movement is performed.
After the attach is finished, clear all the excess resins and clean with wiper before curing.
If you are using the artificial teeth, you could either use teeth guide to attach at once or each at a time. Use sanding or grinding for the tooth to attach on denture base firmly. The procedure will be mostly the same as the printed teeth but with 20s curing time.
After all the attachment is done, use the curing light to cure the anterior and posterior area at labial and lingual side to ensure to keep teeth and denture base in place. Each side with 30s, a total of 3min.Need to keep be in caution with no torque happens between teeth and denture during curing.
Do not apply stress on the model and teeth, otherwise this will affect the accuracy and final result.
Post-processing Curing
When everything is well-performed, please place the product in FabCure 2 facing the teeth downwards.
FabCure 2: 10 min at 60 degrees.
Place the product for 1-2 hours for a better stability and make sure no gap will be shown after curing and the bounding line will show in natural for aesthetics