The average treatment time is 3-6 months (this can vary) which is the time between the initial surgery and the placement of the permanent crown/restoration that the implant is given to fuse with the jawbone.
They can sometimes be placed at the same time teeth are extracted, and in certain cases can be immediately restored with temporary teeth (for aesthetic purposes) while the implant fuses with the jawbone (this is called immediate loading or same day dental implants). More complex implant cases can take longer, particularly if additional procedures such as bone grafts are required.