Effects of strontium dopants on the in vitro bioactivity and cytotoxicity of strontium-doped spray-dried bioactive glass microspheres

•Fabrication of Sr-doped bioactive glass microspheres using spray drying technique for enhanced bioactivity, and osteoblast cell viability.•Discussion on the formation mechanism of particle morphologies and its influence on the corresponding bioactivity and osteoblast cell viability.•Addressing perspectives of Sr-doped bioactive glass microspheres in the field of biomedical engineering.