Subject. Complex studying and assessment of influence of potential is carried out risk factors on a secondary dentition of children in the conditions of particular territorial community and also are developed and introduced preventive and improving actions. Work purpose: studying of features of a secondary dentition of children in specific conditions of the habitat for the purpose of development of the priority directions of prophylaxis of violations of health of children and perfecting of methods of rendering the children's stomatologic help. Methodology. Studying of process of a secondary dentition at children of 4,5-11 years of Vladivostok is carried out. The beginning of eruption considered the perforation moment tooth of an alveolar gingiva with exposure of one hillock or cutting edge. Potential risk factors of the period of pregnancy of mother and childbirth, risk factors of the early childhood, social and economic, features of a way of life are studied. By means of the component konfirmatorny analysis identification of relationships of cause and effect in system habitat factors ‒ a secondary dentition is carried out. Results. The early secondary dentition at children is revealed. Signs of sexual dimorphism of an index of a tooth maturity are established. The greatest impact on a secondary dentition is exerted a factor of a delivery of children, by features of a way of life of boys and girls and also a delivery of their mothers during pregnancy. Conclusions. Materials of a research formed the basis of the developed regional standards of a secondary dentition which were introduced in work of the children's stomatologic organizations. The system of preventive actions providing accounting of regional features of a condition of the habitat, living conditions, deliveries is developed and also solves a number of practical problems of perfecting of the principles of medical observation and improvement of children.

Introduction. The tissues surrounding the implant, which have common features with periodontal tissues, but still possessing a certain specificity are the actual topic of the study. A considerable amount of textbooks has been written on this topic, but so far it has remained little studied. Purpose ― to summarize all knowledge of the structural features of the tissues surrounding the implant, etiology, pathogenesis, clinical picture, differential diagnosis of the pathologies of these tissues. Results. This review is devoted to the analysis of the modern understanding of the influence of the structural features of the soft tissues surrounding the implant and the nonspecific protection factors of the oral mucosa on the potentiation of inflammatory processes and their relationship with the biodegradation of the material. The work of scientists on the criteria for choosing an implantable material depending on the resistance to aggressive environments of the oral cavity, as well as biocompatibility with the tissues of the oral cavity. The risks of complications are considered depending on the implantable material. The etiopathogenesis of such diseases as implantation mucositis and dental periimplantitis is also considered. The clinical picture of these diseases is described, a correlation is made with the materials used for the manufacture of suprastructures. The prevention of complications arising from prosthetics on dental implants is considered.