Chin Implant Materials: Silicone, Medpor & Gore-Tex Compared

Chin augmentation (genioplasty) uses alloplastic implants. Three main materials dominate:

1. Solid Silicone (Silastic)

• Pros: Inert, smooth, easily carved intraoperatively, reversible (removable), long track record, low cost
• Cons: Capsule formation (all implants), potential migration, palpability in thin tissue, no tissue ingrowth
• Best for: Most patients; primary augmentation

2. Porous Polyethylene (Medpor)

• Pros: Tissue ingrowth → stable fixation, no migration, integrates with bone/soft tissue, strong
• Cons: Harder to shape, difficult removal (ingrowth), higher cost, stiffer feel, higher infection consequence
• Best for: Revision, thin tissue, large advancements, asymmetry correction

3. ePTFE (Gore-Tex)

• Pros: Soft, flexible, tissue ingrowth (microstructure), natural feel, low capsule contracture
• Cons: Most expensive, difficult removal, limited sizes/shapes, infection risk higher if contaminated
• Best for: Thin soft tissue, natural contour priority, revision

Alternative: Autologous

Fat grafting, bone graft, sliding genioplasty (osteotomy) — no foreign body, but resorption (fat) or morbidity (bone).

Selection Factors

• Patient anatomy (soft tissue thickness, bone morphology)
• Surgeon experience/preference
• Revision vs. primary
• Cost, patient preference

All FDA-cleared. No "best" material—individualized choice.