Introduction. The problem of preventing odontogenic sinusitis treatment of chronic periodontitis of the upper jaw teeth in modern dentistry is extremely important. Despite numerous studies, the work of national and international scientists, this issue remains unresolved. This pathology is 15–30% of the total number of dental diseases. Basing on the achievements of scientists in this field, the aim of our work is: under conditions of the experiment on laboratory animals (rats) to study the influence of modern filling materials on the mucosa of the maxillary sinus, and the microflora contained in inflammation. As a result, it is planned to recommend the group of filling materials for the treatment of chronic periodontitis teeth of the upper jaw, as an improved approach to endodontic treatment of chronic periodontitis of the upper jaw teeth.
Materials and methods. Physical (complaints, medical history, examination), laboratory (blood count), instrumental (radiological, histological, microbiological, fibroscopy).
Conclusion. Taking into account the nature of anatomical-histological structure of the maxillary sinus, complications occurring endodontic treatment of the upper jaw, are often asymptomatic. So it’s very important to prevent this complication and diagnose the disease at an early stage, when the pathological changes in the maxillary sinus are reversible.