All on 4 Dental Implants risks
If you are going to proceed with the all on four treatment and are concerned of implant failure, just make sure your surgeon does it with a computer guided stent. If an implant fails, it can be placed exactly where is should go under your teeth. I am pretty confident that all your implants are not going to fail. If there is a failure it may just be one implant. It would be beneficial to stop smoking, just for the investment you are placing in your mouth.
There are several things to keep in mind as you try to gauge how successful that your All On Four procedure will be. Here is a list of things to consider:
1. Smoking and drinking alcohol does increase the chance that you could have one or more implants fail. You may not have any problems at all, but certainly need to be aware that this could happen.
2. It would be wise to choose a surgeon that will utilize a 3D CBCT (CT Scan) in planning your case to ensure that the dental implants can be positioned appropriately and placed where the bone quantity is good. If the bone is not of good quantity, then a bone grafting procedure may be required prior to placement of the implants.
3. If the implants are spaced evenly it will be easier to keep the occlusal (chewing) forces equal on all implants. You have a higher percentage rate of an implant failing if it is placed under more stress than the others.
4. Should you have an implant fail it does not mean that the others will fail. If one fails a bone grafting procedure can be performed and a new implant placed at a later date.
5. Follow all pre-op and post-op instructions that your surgeon gives you to ensure optimal healing from your surgery.
There is almost always a back up plan if an implant were to fail. You've described some hard conditions in your mouth and that you have already had a number of problems.
A great implant dentist always has an option up their sleeve, so odds are very low that you would have to go to a regular denture.
BUT, only 10% of patients can actually wear a full denture. For most people they can't chew, they can't really smile because the denture will slip, and they feel embarrassed and they think it must be their fault. This is a miserable existence-I would advise you to do EVERYTHING possible to avoid winding up there.
Go in every three months for prevention visits, use Sonicare, have the office apply Prescription strength Fluoride.
All-on-four is a great solution. It can work really well. No replacement can endure tremendous neglect, but there are fall-back options.
The All on Four Dental impalnt procedure is a highly successful procedure with years of clinical evidence. I will qualify this statement in that you must seek a reputable surgeon to perfom this specialized technique. Make sure they are a Board Certified Oral & Maxillofacial Surgeon. Also the procedure must be done with Nobel Biocare Implants to be called All on Four. The only legitimate research has been done with Nobel Biocare Implants, be very aware of clinicians trying to cut corners with cut rate "cheap" implants. Also, Dr Rega makes a good point, it is easy to replace a failed implant if the procedure is done with a computer generated surgical guide. If one happens to fail it can be replaced in the exact location. You will just have to wear a temporary denture in the interim or the prosthesis you wear during the healing of the implants will have to be adjusted to accommodate the 3 implants (this can only be done in certain situations). I agree with the others in that you need to quit smoking if you are going to make this investment in your future.It is fairly uncommon for one of the implants to fail if placed by a properly trained surgeon, but it does happen to all of us for no apparent reason on rare occasions. All on four is just one treatment option and more implants is most always better if financially feasible, this way if one impalnt fails, there is no problem supporting the prosthesis.