Aesthetic Surgery Journal
September/October 2001 • Volume 21 • Number 5
Alloplastic lip enhancement
Alloplastic lip augmentation can be safe, effective, and predictable when properly executed. The author describes his surgical technique, which evolved from the performance of more than 432 lip augmentation procedures, and focuses in detail on the materials he uses to achieve the best results. (Aesthetic Surg J 2001;21:445-449.)
About 15 years ago I became interested in treatments to enhance the lips and the perioral region. Patients who desire lip enhancement generally fall into 2 groups: those who want bigger and fuller lips to correct genetically hypoplastic lips and those seeking correction of thinning lips and perioral wrinkling. Treatments have included autogenous and alloplastic implants to provide more bulk and projection of the lip vermilion(1-23); various surgical techniques to alter the shape and/or projection of the lips(24); midface suspension to decrease the nasolabial folds(25); and the use of chemical, laser, and mechanical abrasion to diminish perioral wrinkles. I have used alloplastic materials to perform more than 432 lip augmentations. Here I present modifications in my technique and second thoughts on choice of materials for lip enhancement.
The ideal material for lip enhancement should be safe, physiologic, permanent, and easy to use. It also should be easy to remove if the patient desires change. The list of injectable alloplastic filling materials increases almost monthly. Here, I will describe my experience with Gore-Tex (W. L. Gore & Associates, Flagstaff, AZ) and AlloDerm (LifeCell Corporation, The Woodlands, TX).
Gore-Tex is an expanded, fibrillated polymer made of polytetrafluorethylene that was developed in the late 1960s and has been used for grafting since the 1970s. More than 6 million implants have been placed in human beings. Gore-Tex is bioinert, noncarcinogenic, nondegradable, permanent, and available in varying thicknesses and sizes. It is also very malleable.
Acellular allogenic dermis (AlloDerm) is a dermal matrix graft harvested from cadaver skin and processed with the epidermis and dermal cells removed. The processed acellular dermal matrix is freeze-dried and remains stable for 2 years under standard refrigeration. AlloDerm is rehydrated after 10-plus minutes in sterile normal saline solution or lactated Ringer's solution. AlloDerm graphs were first clinically used for treatment of full-thickness burns. The first published account of their use for cosmetic augmentation was in 1996.(13)
A sterile environment is essential when dealing with alloplastic graft placement. I prefer local anesthesia plus intravenous sedation with monitoring and intraoperative antibiotics. The second and third divisions of the trigeminal nerve are blocked with 1% lidocaine containing 1:100,000 epinephrine, followed by lateral and central injection of the vermillion. Small (5-mm) incisions into the vermillion are made bilaterally about 5 mm from the lateral commissure of each lip. Subvermillion tunnels are created with Iris scissors (Fine Science Tools, Foster City, CA). Undermining of the vermillion is performed from side to side at the orbicularis muscle level. Appropriate thickness of the vermillion is an important consideration in preventing ulceration and noticeable irregularity seen with thin vermillion coverage. The tunnels are 1 cm wide and extend from the wet line to the vermillion border.
Lower lip
The lower lip is done first. I prefer to use multistrand Gore-Tex, 1- to 2-mm thick, 1.5-cm wide, and 7.3-cm long. For placement of the graft into its subvermillion tunnel, I prefer 13.5-cm toothed alligator forceps (Figure 1).
Fig. 1. Instrumentation and implants including 13-cm toothed alligator forceps, multistrand Gore-Tex for lower-lip augmentation, 3 contoured AlloDerm strips (before stacking) for the upper-lip augmentation, and Iris scissors for subvermillion tunnel creation. Note that the graft material should not touch the sterile paper drapes.
The forceps are passed through the tunnel, and the implant is grasped securely at one end. The "no-touch" technique is used for this implant. A skin hook, placed in the entrance incision by an assistant, provides counter-traction while the implant is pulled through the tunnel (Figure 2).
Fig. 2. The pull-through procedure for the lower-lip multistrand Gore-Tex graft, with toothed alligator forceps, is demonstrated here.
Lubrication of the implant with sterile KY gel (Johnson & Johnson) during placement is helpful.
After placement of the implant, the lip is stretched from the center laterally while both ends are held with a small hemostat. Uniformity and symmetry are evaluated. The tapered ends of the implant are then tucked laterally into the muscle pocket. No sutures are used to secure the implant; muscle and vermillion prevent exposure. Closure is accomplished with 5-0 Chromic or 6-0 Prolene sutures (Ethicon Inc., Somerville, NJ).
Upper lip
For the upper lip, I prefer the AlloDerm graft, measuring 3-cm wide and 7-cm long. I use a 0.04- to 0.07-inch (40/70) thickness if significant enhancement is desired. For modest improvement, I have used thinner material. Graft preparation involves soaking for 5 minutes in sterile normal saline solution or lactated Ringer's solution, removing the backing, and soaking for an additional 5 minutes in a second dish. Implant shaping is more easily accomplished before full hydration.
My usual upper-lip AlloDerm graft is a 3-layer stack constructed by cutting a 3-cm-wide graft into 3 strips measuring 1 × 7 cm. The ends are tapered and the graphs are stacked and sutured together with a 4-0 chromic mattress suture approximately 1 cm from each end. The stacked graft is then pulled through the upper lip subvermillion tunnel with special attention to grasping all 3 strips during the pull-through maneuver. These graphs may be customized for lip asymmetry or for less fill at the center (cupid's-bow area) if desired. Each end is then held firmly with forceps while the lip is stretched out for proper symmetric placement. The tapered ends are tucked laterally into the muscle pocket.
Postoperative care includes a multilayer Steri-Strip dressing (Seaway Surgical, Toledo, OH) placed along the vermillion border, cold packs for 24 hours, and avoidance of unnecessary lip motion. Antibiotics and antiherpetic medications are begun a day before surgery.
I have found that the multistrand Gore-Tex provides desirable and long-lasting lower-lip enhancement. Complications are unusual, and long-term postoperative complaints about sensation and firmness, made by the patient or the patient's partner are rare. In the short term, there will be some limitation of lip motion and some initial concern about firmness. According to my patients, these concerns usually fade after 3 or 4 weeks. The advantages of Gore-Tex implants over AlloDerm for the lower lip are long-term persistence and somewhat lower cost.
Late in 1996, I first tried AlloDerm for upper-lip augmentation because it was observed that with Gore-Tex, an upward lateral displacement of the implant occurred, resulting in fullness above the vermillion border of the upper lip.(26,27) It is notable that I found the same complication with SoftForm (Collagen Corp., Palo Alto, CA), which I rarely use.(27) I have found Alloderm to be soft; patients and their partners have accepted it, describing it as having a natural feel.
The disadvantages of AlloDerm have been primarily a lack of volume persistence and the cost. Others have reported 80% to 85% persistence at 7 months and a volume diminution of 30% to 40% at 1 year.(22) At 2 years I have found that most of my patients have about 50% of the augmentation they had at 4 months (Figures 3 to 6).
Fig. 3. A, Preoperative view of a 75-year-old woman. B, Postoperative view 5 months after laser resurfacing and upper- and lower-lip augmentation. C, Postoperative view after 27 months. The patient demonstrates about 50% maintenance of upper lip volume and 100% maintenance of lower lip volume.
Fig. 4. A, Preoperative view of a 32-year-old woman. B, Postoperative view 4 months after lip augmentation. C, Postoperative view after 16 months. The patient demonstrates about 50% AlloDerm and 100% Gore-Tex persistence.
Fig. 5. A, Preoperative view of a 52-year-old woman.B, Postoperative view 2 months after facial laser resurfacing and upper- and lower-lip augmentation. C, Postoperative view after 20 months demonstrates 100% lower-lip Gore-Tex persistence and approximately 80% upper-lip AlloDerm graft persistence.
Fig. 6. A, Preoperative view of a 50-year-old woman. B, Postoperative view 4 months after endoscopic facial suspension, full-face laser resurfacing, and upper- and lower-lip augmentation. C, Postoperative view after 12 months with approximately 50% upper-lip AlloDerm maintenance and 100% lower-lip Gore-Tex persistence.
Alloplastic lip augmentation with Gore-Tex and AlloDerm can be safe, effective, and predictable when properly executed. These implant procedures should result in natural-appearing, natural-feeling, attractive, and satisfying results.
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| Publishing and Reprint Information |
Richard D. Anderson, MD is a board-certified plastic surgeon and an ASAPS member located in Scottsdale, Arizona. To ask Dr. Anderson a question or schedule a consultation, call his office at 480-860-9333 or visit his website at www.andersonplasticsurgery.com.
Copyright © 2001 by The American Society for Aesthetic Plastic Surgery, Inc.
Reprinted with kind permission by Richard D. Anderson, MD, 10210 N. 92 Street, Suite 307, Scottsdale, Arizona 85258.