The present invention relates to a method, in particular an
in vitro method, for a method for detecting peri-implantitis (PI) in a mammalian subject having a tooth
implant, comprising detecting, and quantifying at least one
protein in a sulcus fluid sample obtained from said subject that is enriched or depleted in the sample when compared to a sulcus fluid sample obtained from a healthy
implant (I) and / or a healthy tooth (T), wherein an enrichment of at least one
protein as identified and / or wherein a depletion of at least one
protein as identified detects a PI in said subject. Furthermore, the present invention relates to the application of the findings of the invention in the development of new anti-PI therapies and as well as to a kit for performing the above methods as well as respective uses thereof. Finally, improved anti-PI compounds or pharmaceutical compositions are provided.