Table 1.

Classification of bone grafts based on the composition.

SN	Types of bone graft	Description and examples
1	Allograft based	Allograft bone, such as grafton and orthoblast
2	Factor based	Natural and recombinant growth factors, such as transforming growth factor-beta (TGF-beta), platelet-derived growth factor (PDGF), bone morphogenic protein (BMP), and fibroblast growth factors (FGF)
3	Cell based	Cells generate new tissue, such as mesenchymal stem cells
4	Ceramic based	Calcium phosphate, calcium sulphate, and bioglass, such as Osteograf, Osteoset, and Proosteon
5	Polymer based	Biodegradable and nondegradable polymers, such as open porosity polylactic acid polymer