Each implant is placed at a precise angle. This allows us to maximise the use of the bone available in your jaw. If you have previously been told you are unsuitable for implants in the past, it may be that you are suitable for the All-on-4 system (which was first available in 1998) for this reason.
6-11 implants are generally needed for other implant treatments, as opposed to the 4 or 6 used for All-on-4.