With the rise of digital workflows, 3D-printed night guards have become the most popular option, gradually replacing traditional materials like hard acrylic (thermoplastic or PMMA-based) and soft EVA (ethylene vinyl acetate). These modern guards are made from biocompatible resins specifically engineered for safe, long-term use inside the mouth.
Biocompatible materials are designed not to cause:
- Toxicity
- Allergic reactions
- Inflammation or irritation
- Unwanted changes to oral tissues over time
The resin used in 3D printing is:
- Safe to wear overnight on a regular basis
- Tested under ISO 10993 standards (the international benchmark for evaluating medical device safety)
- Certified as a Class IIa or IIb medical device under CE/FDA regulations—meaning it’s approved for extended intraoral use
A biocompatible resin is a specially formulated, medically safe plastic that won’t harm or irritate the patient when worn consistently. It’s important to note that not all dental 3D printing resins are biocompatible, so certification for intraoral use is essential.
At Dlight Dental, our commitment to patient health and advanced technology makes us a leading choice for custom mouthguards in Washington, DC.
What do we use in our lab?
Because we operate an in-house lab, we have full control over the materials we use. Our night guards are made with Key Splint Hard — an FDA-cleared, CE-certified (Class IIa) resin from Keystone Industries. It’s widely recognized for its strength, clarity, and durability, making it a top choice for both night guards and dental splints.
By combining this superior material with our precise digital workflow, we ensure that we produce the most effective and comfortable mouthguards in Washington DC. Our in-house process guarantees a perfect fit and a product you can trust for nightly use.