It is known that the physiological flora of the oral cavity consists of hundreds of different types of bacteria. In recent years, in the treatment of aggressive and progressive periodontitis, the use of molecular diagnostics is becoming increasingly important because it is attached to the identification of the most common gram-negative anaerobic periodontopathogenic bacteria.

Standard microbiological tests in dental practice are rarely used due to numerous shortcomings (specific tests of poor quality, sensitivity of samples to transport to the laboratory), today molecular tests are recommended for the diagnosis of periodontitis. The tests are based on the evidence of DNA (deoxyribonucleic