[Esthetic evaluation of gingival recession plastic surgery in patients using collagen matrices]

To conduct a comparative analysis of the aesthetic results of treatment of patients with gingival recession of RD class I and II according to Miller using collagen matrices and connective tissue transplant (CTT).

The study included 25 patients with grade I and II RD in the area of 107 teeth on the upper and lower jaws. The patients were divided into 4 groups: Mucoderm (n=28), Fibro-Gide (n=22), FibroMATRIX (n=23) and CTT as controls (n=34). The operation was performed using a modified coronary displaced flap technique. In the postoperative period the pain syndrome was studied using a numerical scale. After 12 months, an aesthetic assessment of GR plastics was performed using the Root Coverage Esthetic Score (RCES), and the percentage of GR closure was determined.

After two weeks, a significant decrease in pain intensity was recorded in all the study groups. At the same time, the pain level in the comparison groups was significantly lower compared to the control group. Complete closure of the exposed surface of the dental roots was achieved in 85% of cases in the Mucoderm group, in 90% in the Fibro-Gide group, in 80% in FibroMATRIX and in 95% in the control group (p<0.05).

Collagen matrices can serve as an alternative to CTT, but despite the positive results they provide a smaller increase in keratinized gums and do not always completely eliminate GR limiting their use in periodontal surgery.