[Research on microflora and the qualitative composition of periodontal pathogens by PCR method in patients with root caries and external cervical resorption].

The study of the microflora of periodontal pockets and gingival sulcus in case of caries of cement and external pathological resorption is an important link in preventing the development and aggravation of pathological conditions of hard tissues of the tooth root and periodontal tissues.