1) See that you consult a Right doctor who is a certified Implantologist and trained and equipped enough to carry out the procedure.
2)Your doctor should take all X-RAY’S (IOPAS, RVG’s) , OPG (Orthopantogram) and CBCT if required to check the quantity and quality of the bone available to place implant .Also it helps to know the size of the implant required .
3) All blood investigations should be done before the implant surgery and should be checked and taken care off if not within the normal levels.
4)See that your doctor explains you the whole procedure before surgery and also if some bone regeneration and grafting is to be done .
5)There are many brands of implants available in market , You should ask your doctor about the brand of implant to be placed . Always go for a good quality of implants . Some good brands are Nobel Biocare , Osstem, Dentsply, Ankylos , Neobiotech, Adin.
6) See that proper sterilization and asepsis is being followed during the implant surgery because it is very important part for the success of implant surgery.