TMJ splint: intraoral scan and bite registration protocol

In TMJ cases, the outcome of the splint depends on two records: a clean intraoral scan and a well-taken bite registration. This protocol explains how to scan both arches and record the bite (MIP or vertical dimension) so we can design your Splint Brux® occlusal splint in CAD.

At Smileep we work with practices that already scan: we receive the STL or PLY from your scanner, design the splint in CAD and review the design with you before manufacturing. Delivery takes 48 working hours after design approval in Iberia and 3–5 days in the rest of Europe.

Follow the sequence below: scan the upper and lower arches, record the bite, and send the files with the prescription.

Intraoral Scanning for TMJ Splints

The 3D occlusal splint - Splint Brux® is an essential component in the treatment of bruxism and other disorders associated with the temporomandibular joint (TMJ). In addition to preventing involuntary tooth wear caused by tooth-to-tooth friction, which is common in bruxism cases, it also helps relieve jaw tension and improve overall temporomandibular joint health.

Integrating the Digital Protocol in the Dental Clinic

• Digital STL Files: Send the digital files for the upper arch, lower arch and bite. If you use an intraoral scanner, follow a precise protocol with a Lucia jig or Long strips.
• Medical Prescription: State the clinical specifications for the TMJ occlusal splint in the prescription, including type, guides and personalized adjustments.
• Case Review: Review and approve the digital design before manufacturing, and request adjustments if needed.

More than 150 clinics already work with Smileep’s digital workflow, from intraoral scan to delivery.

Efficient Clinic-to-Lab Workflow

Intraoral Scanning and STL Files

The patient came to the clinic on a Monday morning for the intraoral scanning protocol. We also accept STL files from any intraoral scanner. If your clinic does not yet have one, Smileep digitizes your models with our high-precision laboratory scanner, ensuring an optimal fit for the TMJ occlusal splint.

Once the upper and lower arches have been scanned, you can capture occlusion in MIP or take an additional step by recording the vertical dimension digitally.

Bite References in Maximum Intercuspation (MIP)

This is the simplest option and provides a stable basis for designing the TMJ occlusal splint.

Bite References with Digital Vertical Dimension

Although it requires greater precision, this technique optimizes the splint fit by minimizing errors in thickness and vertical dimension. We recommend preparing the patient with a Lucia jig to determine the ideal vertical dimension and ensure comfort during scanning.

Tips for an Accurate Scan

✅ Follow the protocol without repeatedly scanning the same area to avoid errors. ✅ If the scan has defects, it is better to delete and repeat than to overcorrect. ✅ The scanner will automatically align the files for correct positioning.

Finally, export the files in STL format and send them with the prescription. Our scanning algorithm will automatically position the files to ensure correct spatial alignment.

Case Review and Included 3D Model

Before manufacturing, you will have access to a digital preview of the final TMJ occlusal splint design, so you can review and approve it with confidence. You can also save the images to show the patient.

We include the 3D model printed on Formlabs to support fitting and treatment follow-up.