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Alloplastic implants of the larynx
Archives of Otolaryngology (Chicago, Ill. : 1960)
|October 1, 1983
Summary
Plasti-Pore and Proplast are porous alloplastic implants used in head and neck surgery. Plasti-Pore may be superior to Proplast for deep implantation, but both can be rejected if exposed to air and contaminants.
Area of Science:
- Biomaterials Science
- Surgical Innovation
- Head and Neck Reconstruction
Background:
- Porous alloplastic implants like Proplast (Teflon fluorocarbon polymer) and Plasti-Pore (porous polyethylene) are utilized in reconstructive surgery.
- Previous research has established their use in various surgical defects.
Purpose of the Study:
- To compare the efficacy and biocompatibility of Plasti-Pore and Proplast as replacement grafts in canine models.
- To evaluate the impact of perichondrium preservation on implant success in anterior cricoid cartilage defects.
Main Methods:
- Three groups of 12 canines received Proplast or Plasti-Pore grafts for surgical defects.
- Surgical sites involved deep implantation in the anterior cricoid cartilage with preserved perichondrium.
- Implant exposure to air and aerodigestive tract contaminants was assessed after perichondrium removal.
Main Results:
- Plasti-Pore demonstrated comparable or superior performance to Proplast in deep implantation with preserved perichondrium.
- Both materials showed signs of rejection when exposed to air and contaminants post-perichondrium removal.
- Airway exposure led to infection and extrusion, albeit at a slower rate, even with buccal mucosa lining.
Conclusions:
- Plasti-Pore is a viable alternative, potentially superior to Proplast, for deep implantation in reconstructive head and neck surgery when perichondrium is preserved.
- Protecting alloplastic implants from airway exposure and contamination is critical to prevent rejection, infection, and extrusion.