There are exceptional circumstances where the implant can be placed once the tooth is removed. This is known as immediate placement. This technique can be fraught with complexities and is the riskiest of procedures. If your dental situation is not well appreciated the implant can be lost by bone resorption and infection.
If indeed the implant was successful in integration from the outset, later problems may occur with bone loss. If this occurs at the front of the mouth the aesthetic outlook is very poor with gum recession and the grey implant revealed to the public. Correction of this method of implant placement is traumatic and costly