Recommended Resin: TR01/DM Resins (for model use)
Shining 3D offers TR01 for custom impression tray applications. TR01 is a biocompatible material with a high elastic modulus making it an outstanding choice for printing custom trays. The features including resist flexion under high pressure leading with more accurate impressions.
This material is suggested using DM model resins as a combo to ensure the high accuracy of the patient’s anatomy. This application is mainly used for client’s who would like high accuracy open window tray for implant applications or edentulous cases, etc.
This application guide demonstrates each step from 3D scanning to 3D printing on AccuFab printers with normal 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 custom tray. To acquire this data, scan a patient directly with Aoralscan intraoral scanners.
Design
There are several dental software options providing by Shining 3D. exocad is the dental software we suggest for users to design with simple procedures for custom tray.
| General requirements | Recommended value |
| Minimum wall thickness | 2 mm |
| Minimum handle thickness | 3 mm |
| Retention holes | 3 mm for large trays |
Once the custom tray is designed, export as .stl file and move it into slicing software, AccuWare.
Print*Use the latest AccuWare and FabWare version
One-Click Printing
You could choose to use one-click printing surgical guide after you import the data and find in data-processing stage. The automatic adding support will give you optimum option for adding and printability.
You could double check by pausing one-click printing by reducing some support if needed.
Manually added support (Tray support)
Place the tray parallel to the platform and adjust the spacing in auto support around 4-5mm. Generate the support when all parameter is satisfied. Start slicing when ready and send to the printer for printing.
Note: if there is too less support is added or the support spacing is too large, this may cause printing failure. Support adjustment would need printing experience. You could manually add more support to increase the printability for the secured printing.
Please refer to the model application guide for more information about the design and the post-processing.
Post-Process
Part removal
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 for cleaning, prevent hard brush which may cause surface damage.
Please wash in ≥75% IPA for 1-2 min.
Drying
You could leave the models in the FabWash bucket for air dry or blow to dry the model and make sure there is no resin residues an alcohol staying on surface.
Residue remain will be shown in reflection under room light. Please repeat the cleaning process if the above is shown.
Post-Processing Curing
When everything is well-performed, please palce the product in FabCure 2 facing the support donwards.
FabCure 2: 7min at room temperature
Removing the support
Remove supports using handpiece or grinding disks. Leave a 1mm distance from tray to avoid the scratch on the product. Avoid ripping the supports off straightly, this may leave divots on the tray.
Polishing
You could polish after the support is being removed, smooth the support surface gentry until the marks are fully removed. This would improve patient’s comfort. You could also choose to polish the whole tray for patient’s satisfaction.
Disinfection
The finished impression tray may be cleaned and disinfected according to the facility protocols.
The impression tray could be soaked in IPA for 1-2 min.
Note: please avoid soak in the IPA for too long may cause loose in accuracy