Disabilities are complex, dynamic, multidimensional and also contested; one or more key functions of the organism can be affected so to diminish an individual�s freedom of expression and of action. The transition from an individual, medical perspective to a structural, social perspective was described as a shift from a medical model to a social model where individuals are more likely considered disabled by the society then by their own bodies. Disabilities represent a part of the human condition due to its bidirectional connection with poverty: the existence of disabilities can increase the risk of poverty, and poverty can increase the risk of disability. The experience of disability that results from the interaction of the state of health, personal factors and environmental factors varies greatly. Stress, anxiety or different unpleasant moments can cause a temporary decrease in salivary flow but a constant decrease can indicate the existence of a serious health problem. Xerostomia represents the subjective sensation of dry mouth. It can be accompanied by hyposalivation, an objective phenomenon but this is not always the case. Even if the patient declares the existence of xerostomia, this does not necessarily imply the existence of hyposalivation. Xerostomia can be determined by modifications in the oral cavity, as the sensitivity level to moistening, adverse reactions to certain drugs (anti-depressants, inhibitors of the conversion enzyme). The handicap, now called disability represents a special condition of the individual, reason why he must benefit of the support of the society and of those around him. Dental treatment in patients with psychiatric disabilities must consider the general and local involutive modifications, the existent overlay polypathologies that can influence the dental treatment. The study was conducted practically and included the direct interaction as part of the medical team and the registration of 145 patients presented on request with various types of psychological disorders, sometimes covered by the mask of somatic disorders, indicating a masked depression, or a physical depression, where the emotional condition of yesterday and today differ very much. Pointing out the role of the dentist in approaching patients with physical and psychical disabilities, motivating and making them aware of the necessity of adopting a proper oral hygiene for preventing oral disorders. The dramatic impact on the psyche and the well-chosen words stressed by the clinician increase patient awareness and motivation in order to make him collaborate during the treatment.