During the process of having a dental implant to replace her missing tooth, you should always be able to have a temporary tooth on your braces. The whole process generally takes between 3-12 months depending on if you need bone grafting or not.Many times when you’re missing a tooth from birth, the bone does not form so it needs to be rebuilt. These can be very complex.he whole process generally takes between 3-12 months depending on if you need bone grafting or not. Many times when you’re missing a tooth from birth, the bone does not form so it needs to be rebuilt. These can be very complex.