Detection of Microparticles of Different Origins in Implant Prostheses and Abutments.

<bold>Purpose: </bold>To assess whether particles from metal and other alloplastic materials detected in tissues surrounding dental implants could have other sources of origin besides biotribocorrosion or detachment from the implant surface.<bold>Materials and Methods: </bold>A total of 52 prostheses were randomly tested at various stages of manufacture. Identification of the detached microparticles was performed using light field microscopy and comparison with previously obtained microscopic images.<bold>Results: </bold>Microparticles of metallic, ceramic, plaster, polishers, or unidentifiable origin were detected in 49 prostheses (94%).<bold>Conclusion: </bold>Without an exhaustive decontamination protocol, prostheses and abutments carry metal microparticles and microparticles of other origins that could contribute to the development of peri-implant pathologies. [ABSTRACT FROM AUTHOR]