TY JOUR TI ELIMINATION OF CLASS IV GINGIVAL RECESSION ACCORDING TO MILLER SIMULTANEOUSLY WITH RESTORATION OF THE VOLUME OF LOST BONE TISSUE IN THE AREA OF GINGIVAL RECESSION KW mucosal biotype KW implant KW attached gingiva KW gingival recession KW keratinized gingiva JO Actual problems in dentistry AU Chekanova, A.A. AU Sel'skiy, N.E. PY 2025 IS 20 PB TIRAZH Publishing House