39. STUDY ON CLINICAL AND PARACLINICAL AND EVALUATION OF PERIODONTITIS TREATMENT OUTCOME USING FLAP SURGERY COMBINED WITH 940NM DIODE LASER AT ODONTO - MAXILLO FACIAL HOSPITAL IN 2023. YHCĐ. 2024;65(CĐ11- HN Chấn thương Chỉnh hình-TPHCM). doi:10.52163/yhc.v65iCD11.1775