Korean J Otolaryngol-Head Neck Surg.  2000 Dec;43(12):1283-1288.

Scanning Electron Microscopic Study on Surface and Component of Extuded Polycel TORPs and PORPs

• Jang CH
• Kim YH
• Park SY

Abstract

BACKGROUND AND OBJECTIVE: During the last decade, the surgical use of alloplasts has become more and more widespread among otologists. But extrusion has been the general problem associated in using alloplasts. This study analyzes the change of' surface and microcomponent of the extruded Polycel prosthesis following a long-term middle ear implantation.
MATERIALS AND METHODS
Nine extruded Polycel prosthesis were investigated using scanning electronmicroscopy (SEM) and energy dispersive spectrometer (EDS).
RESULTS
They all showed a severe resorption of fibrous encapsulation and partial resorption of the shaft which faced stapes and footplate. The carbon component decreased and nitrogen and oxide increased more than the original Polycel due to microdegradation.
CONCLUSION
Consistent microdegradation and resorption may be one of the factors causing extrusion of Polycel.

Keyword

Extrusion; Polycel; SEM; EDS

MeSH Terms

Carbon
Nitrogen
Ossicular Prosthesis*
Prostheses and Implants
Stapes
Carbon
Nitrogen