How fast does the bone grow back after a bone graft?

It take about 6: Month to year for the bone to be replaced and healed in place and sometime dose do that partially or completely.

Depends: There are various types of bone grafts in different areas of the mouth and different sizes. Usually small bone grafts can take 3 months to heal but larger bone grafts can take 6-9 months to heal.

4-6 months: It will take 28 days for all the cells to produce at the site, but then to mature it will need 4-6 months for strength.