PROBLEM TO BE SOLVED: To provide a bone regeneration material for accelerating bone healing by promoting new bone formation.SOLUTION: A bone regeneration material 1 includes: a compensation body 2 that contains particulates made of a β tricalcium phosphate porous body and is compensated to a bone defect region and a membrane member (excluding periosteum) 3 that holds the compensation body 2 and has biocompatibility thereby to clog the bone defect region. Since the bone defect region is clogged by the membrane member 3 other than the periosteum, a fibrous connective tissue, etc., existing in a peripheral tissue but not involved in the new bone formation is prevented from moving to the bone defect region.COPYRIGHT: (C)2013,JPO&INPIT【課題】骨新生を促進して骨治癒の早期化を図る。【解決手段】βリン酸三カルシウム多孔体からなる微小顆粒を含み、骨欠損部に補填される補填体2と、該補填体2を保持するとともに、生体適合性を有し骨欠損部を閉塞可能な膜部材(骨膜を除く)3とを備える骨再生材料1を提供する。本発明によれば、骨膜以外の膜部材3によって骨欠損部が閉塞されているので、周辺組織に存在する骨新生に関与しない繊維性結合組織等が骨欠損部に移動することが防止される。【選択図】図1