关键词: 咬合创伤, 牙周再生性手术, 拔牙位点保存, 多学科治疗, 牙种植

Abstract: Occlusal trauma represents one of the local contributing factors to periodontitis. Standardized intervention in occlusal trauma holds significant importance in comprehensive periodontal therapy. This article reports the multidisciplinary management of a case of severe periodontitis with occlusal trauma affecting bilateral maxillary first premolars. Treatment procedures included basic periodontal therapy，occlusal intervention，periodontal regenerative surgery，alveolar ridge preservation and implant therapy，and through combination with standardized supportive periodontal care，the following results were achieved: effective control of periodontal inflammation，establishment of stable occlusal relationships，and restoration of masticatory function. Furthermore，we discuss the similarities and differences in the diagnosis and treatment strategies for the bilateral affected teeth in this case，aiming to provide clinical experience for similar cases. 

Key words: occlusal trauma, periodontal regenerative surgery, alveolar ridge preservation, multidisciplinary treatment, dental implantationn