As we age, our faces begin to show the effects of gravity, sun exposure and years of facial muscle movement, such as smiling, chewing and squinting. The underlying tissues that keep our skin looking youthful and plumped up begin to break down, often leaving laugh lines, smile lines, crow's feet or facial creases over the areas where this muscle movement occurs.
Soft-tissue fillers, most commonly injectable collagen or fat, can help fill in these lines and creases, temporarily restoring a smoother, more youthful-looking appearance. When injected beneath the skin, these fillers plump up creased and sunken areas of the face. They can also add fullness to the lips and cheeks. Injectable fillers may be used alone or in conjunction with a resurfacing procedure, such as a laser treatment, or a recontouring procedure, such as a facelift.Types of anesthesia
Collagen: Because the anesthetic agent lidocaine is mixed in with collagen, additional anesthetic is usually not used. However, if you are especially sensitive to pain, the doctor may use a topical cream anesthetic or a freon spray to numb the injected area.
Fat: Both the donor and recipient sites are numbed with local anesthesia. Sedation can be used as well.
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