TY JOUR TI RETROGRADE PERIIMPLANTITIS (CLINICAL CASE) KW resource approach during complex surgical intervention KW clinical psychology and counseling KW dental implants KW periimplantitis KW periapical diseases KW periapical granuloma JO Actual problems in dentistry AU Chernavskiy, A.F. AU Badalyan, A.A. PY 2022 IS 18 PB TIRAZH Publishing House