WHITE PAPER
Formlabs Logo

Using Dental LT Comfort Resin

Using Dental LT Comfort Resin

Notice:

To avoid damage to equipment, check the resin tank compatibility table in Choosing the right material to confirm you are using a resin tank that is compatible with this material.

Dental LT Comfort Resin is engineered to be more flexible than Dental LT Clear Resin, making it more durable and more comfortable for patients. The splint gradually becomes more flexible in the mouth, providing optimal comfort and improving patient compliance with treatment plans.

Dental LT Comfort Resin also provides exceptional clarity, reducing polishing time.

alttext

Recommended for:

  • Occlusal splints and nightguards
  • Bleaching trays
  • Tooth positioners
  • Space maintainers

Dental LT Comfort Resin prints at 100 microns.

Comparison with other materials

 Dental LT Comfort ResinDental LT Clear Resin
Ultimate tensile strength (MPa)2952
Tensile modulus (MPa)9942080
Elongation at break (%)3312
Durometer/Shore Hardness75D78D
Flexural modulus (GPa)0.640.23
IZOD Impact strength (J/m)9835

To learn more about the performance properties of Formlabs resins, refer to the library of material properties data sheets.

Required resources

Made by Formlabs:

Made by third parties:

  • Dental design software (CAD)
  • Intraoral or desktop optical scanner
  • Dental handpiece with cutting and finishing wheels
  • Isopropyl alcohol (IPA) ≥ 99%

Printing with Dental LT Comfort Resin

Notice:

To avoid damage to equipment, check the resin tank compatibility table in Choosing the right material to confirm you are using a resin tank that is compatible with this material.

Install or update PreForm, then set up the next print job.

To prepare a model for printing in PreForm, follow the instructions in the manufacturing guide. When printing occlusal splints and guards, follow the steps in our application guide 3D Printing Splints with Formlabs SLA 3D Printers [EN] [DE] [ES] [FR] [IT] [JA] [KO] [PT] [RU] [ZH]:

  1. Open PreForm
  2. Open the Dental Workspace
  3. Select or create an occlusal guard template
  4. Import the scan(s) into the Dental Workspace
    1. PreForm Dental Workspace imports, orients, and supports your splint.
  5. Send the print job to the printer

Note:

If you encounter fit issues when the default Dental Workspace preset, reduce the angle of the splints relative to the build platform.

Finishing

The Form Wash agitates the solvent bath and removes parts from the bath after a set time. Wash parts according to the application guide. Pay particular attention to information that affects mechanical properties or biocompatibility requirements.

If the model is hollow or has internal channels, ensure liquid resin is flushed out thoroughly from these features. If you encounter fit issues, be sure to clean the splints extensively, including flushing with fresh solvent and using compressed air. Allow parts to fully dry before post-curing.

Post-curing requirements

Dental LT Comfort Resin requires post-curing to reach its optimal mechanical properties. Refer to the application guide for post-curing recommendations.

Newly post-cured splints have a slight green tint. Over time the part will photobleach to a clear blue hue.

Notice:

Follow post-curing recommendations from Formlabs for the clearest and best possible results. Improper post-curing can lead to suboptimal mechanical and biocompatibility properties.

  • Do not post-cure beyond the recommended post-cure settings, as this may cause discoloration.
  • Allow post-cured splints to cool completely before removing supports or fitting.
  • Remove supports only after post-curing to prevent warping.

Additional resources