Abstract
Aseptic osteolysis is a main cause of loosening of orthopaedic implant failures. The wear debris derived from polymers (UHWMPE) and/or metals of implants (Ti) elicit primary inflammatory and secondary osteolytic responses. In total temporomandibular joint (TMJ) reconstruction with implants, foreign body reactions are reported and are the major cause of failure in the metal-on-metal and Teflon® or Proplast®-on-metal prosthesis, leading a revision surgery. A new generation of implants replaced Teflon® by UHWMPE in the fossa component with acceptable clinical results in long term follow-up (14 years).
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