Abstract: The invention relates to a method, system and a device for assessing the risk for periodontitis progression or for developing periodontitis, and a method, system and a device for prognosticating the outcome of a treatment procedure for treating periodontitis, on the basis of a risk score calculated on the basis of weight factors, which may be associated with numerical values, assigned to a plurality of measures corresponding to a plurality of predictors promoting periodontitis comprising host predictors, local predictors, and systemic predictors for periodontitis progression or for developing periodontitis for a patient. The invention provides among other things an objective tool that allows for preventive measures to be taken in time before severe and often irreversible damage caused by periodontitis has occurred, by taking into account the most important risk predictors promoting periodontitis, and in particular takes into account the synergy between these predictors.

Abstract: Skin prick test for the determination of the predisposition of an individual to develop marginal periodontitis, said kit comprising: (a) a first reagent containing a known quantity of a surface structure common to anaerobic Gram negative pathogens which is capable of triggering the inflammatory response associated with periodontitis and gingivitis; (b) second reagent containing an agonist to said individual; (c) a negative control; and (d) instructions for the use of said kit; and a method for such determination of predisposition.

Abstract: A process for the conditioning of dental cavities by etching in preparation for bonding restoration to enamel and dentin, comprising the steps: a) etching the dentin part of a dental cavity using an aqueous composition containing, as an active constituent, EDTA, in an effective amount, and b) etching the enamel part of said cavity using a conventional etching acid; and a kit for use in such process for conditioning.