Beta-Tricalcium Phosphate is used in bone regeneration in combination with which material?

• A. Type I Collagen
• B. Titanium Foil
• C. Autograft Bone
• D. Demineralized Bone Matrix

Answer: (A)

Beta-tricalcium phosphate acts as an osteoconductive scaffold that provides a porous space for new bone to grow, but it needs a compatible matrix to be handled properly and to support cell attachment and vascular infiltration. Type I collagen serves as this natural matrix—being the dominant organic component of bone, it creates a cohesive, moldable network that binds the TCP particles, stabilizes the graft in the defect, and guides cells onto the scaffold. The collagen-TCP combination enhances handling, maintains space, and facilitates the sequence of bone in-growth as TCP gradually resorbs and releases calcium and phosphate for mineralization, while collagen is gradually replaced by new bone.

Other options don’t fit as well: a barrier like titanium foil is used to direct regeneration but isn’t a graft material; autograft bone is a graft source itself rather than a carrier for TCP; demineralized bone matrix provides osteoinductive signals but is not the common matrix carrier that optimizes TCP’s performance in a moldable, space-maintaining graft.