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Poyu Chen1– 3*, Chuangwei Zhang1– 3*, Ping He,4 Shengyuan Pan,1– 3 Wenjie Zhong,1– 3 Yue Wang,1– 3 Qingyue Xiao,1– 3 Xinyan Wang,1– 3 Wenliang Yu,1– 3 Zhangmin He,1– 3 Xiang Gao,1– 3 Jinlin Song1– 3 1College of Stomatology, Chongqing Medical University, Chongqing, 401147, People’s Republic of China; 2Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, 401147, People’s Republic of China; 3Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, 401147, People’s Republic of China; 4Department of Stomatology, Dazhou Central Hospital, Dazhou, SiChuan, 635000, People’s Republic of China*These authors contributed equally to this workCorrespondence: Xiang Gao; Jinlin Song, Chongqing Key Laboratory for Oral Diseases and Biomedical Sciences, Chongqing, 401147, People’s Republic of China, Tel/Fax +86 23 88860105 ; Tel/Fax +86 23 88860026, Email xiangg@hospital.cqmu.edu.cn; songjinlin@hospital.cqmu.edu.cnIntroduction: The functional reconstruction of periodontal tissue defects remains a clinical challenge due to excessive and prolonged host response to various endogenous and exogenous pro-inflammatory stimuli. Thus, a biomimetic nanoplatform with the capability of modulating inflammatory response in a microenvironment-responsive manner is attractive for regenerative therapy of periodontal tissue.Methods: Herein, a facile and green design of engineered bone graft materials was developed by integrating a biomimetic apatite nanocomposite with a smart-release coating, which could realize inflammatory modulation by “on-demand” delivery of the anti-inflammatory agent through a pH-sensing mechanism.Results: In vitro and in vivo experiments demonstrated that this biocompatible nanoplatform could facilitate the clearance of reactive oxygen spe