What kinds of fillers are used?
The first fillers were all made of collagen derived from cows. Collagen is the substance that fills the spaces between the cells of the body. Cow collagen is not commonly used these days because of its allergic potential. Test doses are required prior to treatment.
Today, there are many different fillers to chose from. We offer three kinds: hyaluronic acid (Teosyal and others), pig collagen (Evolence), and calcium-based fillers (Radiesse).
Hyaluronic acid: (Teosyal, Restylane, Perlane, Juvederm, Juvederm Plus, Revanesse) The most common fillers in use today are made of synthetic hyaluronic acid. You may see the term NASHA, which stands for Non-Animal Stabilized Hyaluronic Acid. Early hyaluronic acid products were extracted from rooster combs. The hyaluronic acid products we use are genetic copies of human hyaluronic acid. The only difference between this manufactured hyaluronic acid and your own is in its stability. Human hyaluronic acid is very unstable. In unmodified form, it wouldn't last anywhere near long enough to be used as a filler. So synthetic hyaluronic acid undergoes a process known as cross-linking to thicken and stabilize it. The more links, the thicker it gets.
Porcine (pig) Collagen: (Evolence) This filler is made of porcine (pig) collagen. Porcine tissue closely resembles human tissue. This is why pig heart valves can be used to replace human heart valves. Allergic reactions have not been reported.
The cross-linking (thickening and stabilizing) process is unique in that it is sugar-based. This is far less toxic than all other cross-linking processes (that use substances like gluteraldehyde) . Besides being well tolerated, the nice thing about Evolence is that it lasts about 12 months.
Calcium Hydroxylapatite: (Radiesse) this product contains calcium hyroxylapatite (CaHA) microspheres. Calcium hydroxylapatite is one of the primary mineral substances of bone. No allergy testing is required. Over a period of weeks following injection your body encapsulates the microspheres with collagen, giving a filling effect. Because the calcium hydroxylapatite microspheres persist