Polymethyl-methacrylate microspheres (PMMA)

Polymethyl-methacrylate microspheres (PMMA)

Brand names include: Bellafill

PMMA is considered a semi-permanent filler and is most often used to treat medium-to-deep wrinkles, folds and furrows, particularly nasolabial folds. It can also be used to fill out pitted scars and to augment thin lips.

When a more permanent solution to facial wrinkles is desired, PMMA is often used instead of collagen replacement therapy or hyaluronic therapy. PMMA has been used for many years in permanent surgical implants. Because of this, your surgeon will likely under-fill on the first treatment, adding more later if needed.

One of the downsides of PMMA is that a number of injections are needed to create volume and it can take up to three months to realize the full effects. It may also be visible under the skin. To avoid any unwanted results, it’s key that your plastic surgeon is familiar with the proper technique, which involves injection at the dermal subcutaneous junction using threading or tunneling methods.