My dtr was in a horrible car accident 11 yrs ago and lost 4 teeth... With her age ( 18 ) and her vanity level ( very high!) I opted to have implents put in liu of a removable bridge. She loves them..... so far no problems....
My husband had a implant years ago for one tooth... when the rest of this teeth went and was replaced by dentures ( had those now for almost 20 yrs) they made the denture to fit around that implant post... they said it would actually help hold the dentures in place.. His dentures certainly never slip.... and he has had no problems at all with the dentures or the implanted post ( never even a re-alinement)