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Medpor Contour Implant

Medpor is a commonly used implant for the reconstruction of moderate to severe chin retraction, short mandible (micrognathia), and some congenital skeletal defects. It comes in diverse models and sizes, thus meeting the face shape requirements of an overwhelming majority of patients. In addition, it is highly customizable. Medpor is made up of biocompatible polyethylene and is riddled with fine net holes, which enable the regeneration of capillaries and closely combine with the skin, thus effectively lowering the incidence of implant reaction or infection. Every model of Medpor is designed in a particular U-shape with two pieces and conforms to the physiological characteristics of the human skeleton. Medpor allows the implant to enclose the interface with the mandible, thus addressing the depression or stepped deformity at both sides of the chin that may arise in a traditional one-piece silicone implant; further, it is long enough to fixate at a 45° chin angle to elongate the face and change the proportion of mid and lower face in the frontal view. Moreover, for some patients with a deviated jawbone, such a two-piece implant can realize a flexible height or side-to-side adjustment to modify a chin deviation and other complex esthetic problems, which obviate the risks of genioplasty or chin osteotomy.

The strength of Medpor is similar to that of human skeletons, and it provides similar support to the skin to present a natural impeccable curvature of the chin. The implant needs to be fixated by titanium bone screws that allow the random height or angle adjustment of implants to elongate the face or sharpen the chin and also tolerate a gross outer force collision without deformity or dislocation, thus partially replacing the protection function of cranial bones. Currently, it is the most secure and safest chin implant . Bone screws for fixation are also biocompatible materials and do not need to be removed or replaced during the lifetime.

Surgical conditions

Duration

0hr
  • Type of anesthesia: IV sedation + local anesthesia
  • Type of incision: A 2cm incision at the intraoral lower gum
  • Recovery: 5–7 days
  • Removal of stitches: No

General instructions

No food and water on the day of surgery

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  • Avoid smoking, alcohol, and irritating foods for 1 month postoperatively, and avoid strenuous or excessive activities.
  • Avoid singing or laughing and other overt mouth opening behaviors for 2 months postoperatively.
  • Avoid heavy collision to or squeezing of the chin for 3 months postoperatively.

Ideal candidates

  • Patients with small mandible disease typical of congenital underdevelopment of the chin and mandible (micrognathia)
  • Those with a severely retracted or short chin
  • Those with a retracted and deviated chin
  • Those with chin skin droopiness due to the lack of bone support
  • Those who have undergone other chin implant surgeries but have shown a deformity or unnatural results
  • Those who want to customize a special shape of the chin

Possible complications

  • Poor wound healing
  • Prosthesis reaction or infection
  • Scar adhesion, foreign body sense (temporary)

Surgical advantages

  1. The implants are highly biocompatible and are less likely to incur inflammation or infection.

  2. The two-piece design wraps both sides of the chin, and results are naturally free from shadows or depressions at the interface with the bone.

  3. It achieves both vertical and horizontal (side-to-side) adjustment to redress chin deviations.

  4. Multiple models and sizes are available, which highly customize patients’ requirements.

  5. The fixation position of the implant is randomly adjusted to elongate the face.

  6. The implants are fixated by bone screws, with results stable and less likely to present dislocation.

  7. The materials are tough and resist outer force collision and squeezing.

Surgical drawbacks

  1. It is not suitable for patients with a broad chin; otherwise, the chin would appear thick at both sides.

  2. The material is tough and takes more time for sculpting during the operation.

  3. Bone screws are necessary for fixation, and surgical procedures are more complex than those in general implant emplacement.

  4. Future modification or removal is not easy.

Possible procedures in conjunction

Before & After

These photographs represent typical results, but not everyone who undergoes plastic surgery will achieve the same.

Medpor Contour Implant – Female

Medpor Contour Implant – Male

Micrognathia Reconstruction – Female

Micrognathia Reconstruction – Male

Skew Chin Correction – Female

Skew Chin Correction – Male

After One Week