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Fabrication know-how

Discover know-how/tips/cautions shared by aligner fabricating experts


It explains how to make devices using 3D printers.

Printing process

Slicing > 3D printing > Post processing (For DLP/SLA printers only)

Select printer

DLP/SLA or FDM type printer can be selected according to user environment or purpose.
* Minimum specification: 100㎛ or less for X/Y/Z-axis resolution

DLP/SLA type

FDM type

Type of curing resin with light

Type of laminating by melting filaments

Sophisticated output: SLA > DLP

Printing speed: SLA < DLP

Maintenance:  SLA < DLP


1. Fast printing

2. The printout surface is smooth

3. It can manufacture much smaller and more precise prints than FDM type


1. It is difficult to make large prints due to brightness or distortion by wide light

2. Weak print strength

3. Short product life

4. Sensitive to temperature. Deformation occurs at room temperature over 60℃

5. Expensive equipment and materials


1. Popular

2. Cheap equipment and materials

3. Long product life

4. Strong print strength

5. Convenient post-processing


1. Slow printing

2. The printout surface is rough and not precise


Slicing program settings and check points by equipment

By adjusting the Z-axis of slicing program, lightly bury the model or us a floor aid to prevent print failure.

Check points to avoid printing failure

DLP/SLA type

FDM type

Check floor temperature

Check for foreign objects

The resin should be well mixed

Check floor temperature

Check filament twisting

Check for nozzle clogging


DLP/SLA type

FDM type


This is a job only for DLP/SLA printers, there is a process of removing excess resin remaining on the printout and curing.

Put the printout in a barrel filled with alcohol, remove excess resin with a fine-bristle toothbrush. Put the dried printouts into the curing equipment.

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