Dental implant treatment is an excellent option for prosthetic restoration that is associated with high success rates. Implant stability is essential for a good outcome. The clinical assessment of osseointegration is based on mechanical stability rather than histological criteria, considering primary stability (absence of mobility in bone bed after implant insertion) and secondary stability (bone formation and remodelling at implant-bone interface). The aim of this study was to review the literature on Resonance Frequency Analysis (RFA) as a method for measuring dental implant stability. An online search of various databases was conducted on experimental and clinical research published between 1996 and 2008. The studies reviewed demonstrate the usefulness of RFA as a non-invasive method to assess implant stability. Further research is required to determine whether this system is also capable of measuring the degree of dental implant osseointegration.

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