What does “Polymethyl methacrylate” mean?
PMMA is an abbreviation for an acrylic resin called polymethyl methacrylate. In dentistry, it is used as a material to make temporary crowns or bridges, and the specific scope of use varies depending on the product.
A resin used for temporary restorations
A material may be needed to cover the tooth while the final restoration is made or the treatment outcome is assessed. PMMA is one type of resin used in these temporary restorative products.
Some PMMA products are digitally milled
Prefabricated PMMA blocks can also be milled using CAD/CAM equipment. Although both come as blocks, PMMA differs from ceramic in composition and purpose and should be distinguished from materials used for definitive restorations.
The duration of use depends on the product and treatment plan.
Although some products are designed for long-term temporary use, this cannot be generalized to the service life of all PMMA restorations. Check the planned replacement time and contact method in case of damage or loss.
Frequently Asked Questions
Can a PMMA restoration be kept as the definitive restoration?
If the product is for temporary restoration, use it according to the established treatment plan. The name of the material alone does not determine its suitability for long-term definitive restoration.
Are PMMA and ceramics the same material?
PMMA is a resin and has different composition from ceramics. Just because it appears to be tooth-colored does not mean that the material or durability is the same.
Questions to help you understand PMMA
Learn what the term means and how it relates to your dental condition.
- Sufficient understanding
What does this restoration do and when should it be replaced?
Explanation and evidenceConfirm the temporary use purpose of the product and the schedule for the final prosthetic stage.
U.S. National Library of Medicine Telio CAD Device Registration Information - A choice suited to your condition
What PMMA products and manufacturing methods do you use?
Explanation and evidenceCheck the scope of application according to the specific type, such as CAD/CAM products.
Ivoclar · Telio CAD
