Full-arch fixed dental implants

All-on-4 and similar names are marketing terms describing a configuration, typically four implants per arch with the back ones tilted to use available bone and avoid grafting, instead of a distinct clinical category. Some cases use five, six or more implants for better load distribution or so a section can be replaced independently. The number is a clinical decision based on bone, bite and prosthesis design, so the useful question is not which brand name is being used but how many implants are planned and why.

You can leave with fixed temporary teeth on the day of surgery where enough initial implant stability is achieved, which is judged during the procedure instead of promised beforehand. What you do not get in a day is the final prosthesis. The definitive unit is made months later after the implants have integrated, and it is a separate and substantial cost. If a quote does not clearly separate the temporary from the definitive prosthesis, that is the first thing to clarify.

Because the prosthesis does not come out, cleaning has to happen underneath it, and that requires specific tools, superfloss, threaders, interdental brushes and often a water flosser, used daily. This is not optional maintenance; plaque accumulating under a prosthesis is the main driver of peri-implant disease, which is the leading long-term threat to the whole reconstruction. Ask to be shown the technique at the fitting appointment and to practice it there.

The implants and the prosthesis have different lifespans, and conflating them is a common source of disappointment. Implants that integrate and are maintained can serve for a very long time. The prosthesis on top is a wearing component: acrylic teeth chip and wear, screws loosen, and eventually the unit needs remaking. Treating replacement of the prosthesis as an expected future cost, not a failure is the realistic way to plan for this treatment.

It depends on which one and how the prosthesis is designed. Sometimes a replacement implant can be placed and the existing prosthesis adapted; sometimes the prosthesis has to be remade; occasionally the whole plan needs revisiting. Configurations with more implants can be more forgiving because losing one leaves others carrying the load. This is a question to ask and get answered in writing before treatment, because the financial consequences differ enormously between practices.

It is fixed instead of removable, which is the main functional difference, and for many people that transforms eating and confidence. It is also far more expensive, irreversible, and carries an ongoing maintenance requirement that a denture does not. An implant-retained overdenture sits between the two: it clips onto implants for retention but still comes out for cleaning, which some people find easier to maintain. The right answer depends on priorities, dexterity, budget and bone.

Often yes: one of the reasons tilted posterior implants are used is precisely to engage available bone and avoid extensive grafting in a resorbed jaw. Whether it is possible in your case is a three-dimensional question answered by a CBCT scan, not by a photograph or a general consultation. Where bone is severely deficient, grafting or alternative approaches may be needed, and that changes both the timeline and the cost significantly.

A well-made fixed prosthesis restores appearance and chewing far better than a loose denture, and most people adapt well. It is not identical to natural teeth: it is a single unit instead of individual teeth, there is a transition where it meets the gum, and the bulk affects speech initially for some people. Trial fittings exist so appearance and speech can be assessed before the final unit is made: use that stage, not accepting the first result.

Yes. This is among the most expensive and least reversible treatments in dentistry, and it usually involves removing remaining teeth. A second opinion should review whether any teeth could reasonably be saved, whether the number and position of implants is appropriate, what prosthesis material is planned and why, and what the maintenance and replacement expectations are. A practice confident in its plan will not object to you seeking one.

There is no universal number: it is decided by bone volume and quality, the bite forces expected, and whether the design allows a section to be replaced independently if one implant later fails. Four is the most heavily marketed figure, but five, six or more are used routinely where load distribution or bone availability calls for it. The number should be justified by your own scan, not assumed from a brand name.

Immediate loading means fixing a temporary prosthesis to the implants on the same day as surgery, instead of leaving them to integrate under the gum first. It depends on achieving enough initial mechanical stability at the time of placement, which is judged during the surgery itself instead of promised in advance, not every case qualifies, and a plan that assumes it will work without a fallback is incomplete.

The immediate temporary is designed to restore function and appearance quickly while implants integrate, and it is not built to the same durability or fit standard as the final piece. The definitive prosthesis is made months later, after healing, using detailed impressions, bite records and often a trial fitting, and it is a separate and substantial cost from the temporary. A distinction worth confirming in writing before treatment starts.