Modern dental care cannot be considered just a sum of therapeutically active attitudes; it also means survey, local and general stimulation of health status. Although healing and functional therapeutical measures are necessary in an overt periodontal disease, closer examination of apparent healthy dento-periodontal structures and planning preventive care measures according to the risk factors has a similar importance. To examine the periodontal apparent state of health is an additional effort because of the difficulty of noticing nonsymptomatic illness of gingiva and profound periodontium that requires high level of professionalism. It is common knowledge: the more carefully an apparent healthy individual is investigated (dentoperiodontal structures, T.M.J., muscles, occlusal relations) through clinical and paraclinical tests, the farther is he/she from the ideal state of health. High differentatiation of dento-maxillary apparatus structures, the plasticity of its tissues, the outstanding adaptability to different tasks, all these are responsible for transient hidden cellular, metabolic, vasculo-nervous disturbances and for a false state of health and functional - structural harmony.