Prepolymerized vs. in situ-polymerized fiber-reinforced composite implants--a pilot study.

• The aim of this study was to investigate bone response to bioactive fiber-reinforced composite (FRC) implants under two polymerization conditions. Glass-fiber-dimethacrylate composite was tested as prepolymerized cylinder-shaped FRC implants and as cylindrical FRC implants polymerized in situ with blue light transmitted and scattered by the glass fibers. Ten FRC implants (6 prepolymerized and 4 in situ-polymerized implants) were placed in the right tibias of 3 pigs by means of a press-fit technique. After 12 weeks, light microscopy revealed only mild foreign-body reaction, with no accumulation of inflammatory cells on both the prepolymerized and the in situ-polymerized implants. The prepolymerized implants appeared to be fully integrated, whereas the in situ-polymerized implants were almost completely surrounded by a fibrous capsule. The present study suggests that in situ polymerization of FRC implants results in fibrous capsule formation and prevents integration with bone.

Ämnesord

MEDICIN OCH HÄLSOVETENSKAP  -- Klinisk medicin -- Odontologi (hsv//swe)

MEDICAL AND HEALTH SCIENCES  -- Clinical Medicine -- Dentistry (hsv//eng)

Nyckelord

Animals

Composite Resins

chemistry

radiation effects

Dental Implants

Female

Foreign-Body Reaction

etiology

Glass

Implants

Experimental

Light-Curing of Dental Adhesives

adverse effects

methods

Materials Testing

Osseointegration

radiation effects

Pilot Projects

Random Allocation

Swine

Tibia

surgery

Publikations- och innehållstyp

ref (ämneskategori)

art (ämneskategori)