Dental SG Resin is specialized for dental professionals. The resin is a Class I resin (EN-ISO 10993-1:2009/AC:2010). Dental SG can be printed only with the Formlabs Form 2 or Form 3B 3D printer. It is designed for dental surgical guides or similar applications, in compliance with industry standards and testing protocols. Dental SG can be steam sterilized using an autoclave, allowing it to be used directly in the operating room. Dental SG can be used for up to 24 hours in the mouth in a single use.

Dental SG Resin prints at 50 microns and 100 microns on the Form 2 and Form 3B. Learn to print, sterilize, and cure Dental SG parts to prepare for surgeries using our application guide, 3D Printing Surgical Guides with the Form 2 [en].

Implant treatment planning

3D printed surgical guides are designed based on the patient’s anatomy using implant treatment planning software. Cone beam computer tomography (CBCT) captures the patient osteotomy, while intraoral scanners or desktop optical scanners can capture accurate optical scans of the patient’s dentition.

In implant planning software, clinicians plan the implant treatment using the patient’s CBCT data and a template of the desired final prosthetics. Depending on the type of guide being designed, clinical design considerations include position, angulation, depth, the specific implant system, and the surgical kit. The patient’s surface dentition can also be incorporated.

Learn how Daniel Whitley DDS and Sompop Bencharit DDS, MS, FACP perform dental implant surgery with Dental SG in this Digital Implantology white paper [en], including in-depth information on implant planning and placement accuracy with the Form 2.

Surgical guide design and export

Once the treatment is planned, generate a surgical guide model to cover a partial or full arch, depending on the clinical preferences. From the fully designed guide, export a digital model of the surgical guide, in STL/OBJ/3MF file format. Select an implant treatment planning software that allows for open model export.

To print precisely with Dental SG Resin, follow two main design requirements:

1. Do not include support touchpoints on intaglio surfaces.
2. Do not include support touchpoints on guide sleeve holes or surfaces.

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

To prepare a model for printing in PreForm:

1. Open a model.
2. Select the resin, resin version, and the desired layer thickness.
3. Orient to preserve fine details.
4. Generate supports.
5. Send the print job to the printer.

Wherever PreForm generates a support touchpoint, there will be local areas of inaccuracy, which require post-processing. Verify the placement of support touchpoints during the Orient and Support print preparation steps.

Shake the Dental SG resin cartridge for 5 minutes to ensure complete mixture of the resin’s chemical formulation. Insert the cartridge along with a resin tank and build platform, and start the print.

Resin tank wear and Dental SG Resin

Dental SG resin causes Form 2 standard resin tanks to cloud and wear faster than other Formlabs resins. This clouding will eventually have an effect on the accuracy of prints. Use a new standard resin tank with each new Dental SG resin cartridge when printing on a Form 2. For extremely high accuracy, switch resin tanks more often.

Follow the Dental SG Instructions for Use to ensure biocompatibility. Parts can also be steam sterilized in an autoclave.

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

If the alcohol is dirty or partially concentrated with resin, use a second bath with clean, unsaturated IPA, to ensure that all liquid resin is removed. Do not leave parts in IPA for more than 20 minutes, as this may cause micro-cracks and abrasions in the printed part.

Allow parts to air dry completely, or use compressed air to blow IPA away from part surfaces. Inspect parts closely to ensure all liquid resin has been removed.

Remove supports after post-curing to ensure that parts do not warp during post cure.

Post-cure Dental SG parts according to the Dental SG instructions for use. During post-curing, the part color changes from translucent yellow to translucent orange.

Refer to the Form Cure time and temperature settings for post-curing recommendations. These post-cure settings were developed specifically for dental surgical guides and are acceptable for biocompatibility and part strength.

Use flush cutters included in the Formlabs Finish Kit or other cutting instruments to carefully cut the supports at the point where they attach to the model. Use caution when cutting the supports, as the post-cured material may be brittle. Wear safety glasses when cutting supports, as the material may be brittle and small pieces can fly off. Supports can also be removed using dental handpieces like cutting discs, burs, and polishing wheels.

For a smoother surface finish, use high grit sandpaper to smooth support marks. For higher part translucency, polish guides using pumice and a rag wheel or other specialized appliances.

For instructions on post-processing and assembly, consult 3D Printing Surgical Guides with the Form 2 [en].

• Dental SG EC Declaration of Conformity
• Dental SG Declaration of Biocompatibility
• Dental SG Instructions for Use [en] [de] [fr]
• 3D Printing Surgical Guides with the Form 2 [en] [de] [fr]
• Dental SG Safety Data Sheet (SDS)
• Digital Implantology with Desktop 3D Printing