First if you meant an osteoblast; then is a mononucleate cell that is responsible for bone formation.
None. Are you thinking of ostioblasts? They destroy bone, but not cells.
You have specialized cells in your body (ostioblasts) that make bone matrix.
Ostioblasts. Cells that line ans cover most bone. They lay down new calcium salts. You need fibroblasts to lay down the collagen too.
Ostioclasts are the cells that lay down the calcium salts that are the bony part of bone. Ostioblasts are the cells that dissolve the bony salts. Note : condroclasts and chondroblasts do the same thing for the collagen matrix of bone. They all work together to form and modify bone.