Implants

A summary of implants is provided in (Table 6.6).
     
 
Table 6.6. Implants

  Implants   Indications   Treatment   Complications and potential adverse reactions
  UltraSoft, SoftForm Expanded polytetrafluoroethylene   Indicated for subdermal soft tissue augmentation. SoftForm is used for the lip border, smile lines (nasolabial fold), and frown corlines;
UltraSoft is used for cheek and temple. Implants made of ePTFE are most applicable in lip enhancement, although they can also be used to ameliorate perioral rhytids [29]
  Under local anesthesia, the patient has the appropriate length and width of the implant inserted subdermally via a 14- to 16-guage angio catheter   Appear to have a higher rate of infection than permanent injectable microimplants, but the problems can be corrected more easily [29]
  Gore-Tex Dual-porosity expanded polytetrafluoroethylene   FDA-approved for vascular grafts, implant material, and soft tissue repair   Under local anesthesia, the patient has the appropriate length and width of the implant inserted subdermally via a 14- to 16-guage angiocatheter   Complications range from transient bruising and swelling to infection of the implant site, formation of fistula, and implant extrusion, among others. These more serious complications are considered less common
  Advanta Facial Implant Dual-porosity expanded   FDA-approved to fill deep wrinkles or folds or to enhance, augment, or repair soft tissues of the facial area, such as the lips [25]   Requires local anesthesia [25]   Low incidence of complications [25]
 
     

Numerous materials have been used in the development of injectable microimplants. These include calcium hydroxylapatite microspheres, hydrophilic polyacrylamide gel, PMMA microspheres, solid, vulcanized methylpolysiloxane microspheres suspended in polyvinylpyrrolidone, hydroxymethylmethacrylate, and ethylmethacrylate. These all share some element of providing a “structural” framework, usually involving microspheres in a carrier, and are generally considered permanent or semipermanent.