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ALLOPLASTIC MATERIALS IN PLASTIC SURGERY

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26<br />

SILICONE<br />

Properties<br />

• Thermal and oxidative stability.<br />

• Resistance to weathering.<br />

• Hydrophobic nature.<br />

• Low surface tension.<br />

• Good dielectric strength.<br />

• Versatility of structural forms.<br />

• Nonporous – resist tissue ingrowth.<br />

• Gas or steam sterilized.<br />

Properties – cont.<br />

SILICONE<br />

• Chemically and physically inert – controversial<br />

• Degrades in water, soil, air and in-vivo.<br />

• Shell of breast implant – semipermeable – bleeds

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