If you have started looking into full-arch implants, you have probably run into a wall of names. All-on-4, all-on-6, teeth in a day, smile in a day, three-on-six. Somewhere underneath all of that sits a separate set of labels that dentists use between themselves: FP1, FP2, and FP3.
Patients are not expected to know these. They describe something real about your result, and if you understand the difference, you will follow your treatment plan much better.
What FP Actually Stands For
FP means fixed prosthesis. The number indicates how much of the missing structure the bridge replaces.
The short version is that it comes down to pink. FP3 bridges have artificial pink gum material built into them. FP2 bridges have pink in them too. FP1 bridges have none, so what you see above the teeth is your own gum tissue.
That single difference drives most of what follows: the cost, the difficulty, the type of patient it suits, and how the result ages.
Why All-on-4 Usually Ends Up With Pink
The standard All-on-4 protocol produces a bridge with pink in it, and there is a historical reason for that.
When the technique was developed, the available material was titanium, with acrylic teeth on top. A bridge like that needed roughly 13 to 16 millimeters of vertical room to survive normal chewing forces. Any less and it would break. That room has a name in the profession: prosthetic space, and to create it the surgeon reduces the bone.
Zirconia changed the maths. It is a stronger material, and the same height is no longer necessary, so the amount of bone reduction performed is a decision rather than an automatic step.
The important point is that the pink is a design decision for the prosthesis, not about the number of implants. You can have an All-on-4 that is an FP1. The two labels answer different questions.
The Gummy Smile Advantage
Reducing bone turned out to have a second benefit unrelated to strength.
If someone has a high smile line, taking the bone down moves it above the smile zone, allowing the smile to be designed from scratch. We have treated many patients who came in with a gummy smile and left without one because we were no longer working around their existing gum line.
That control is real. For the right patient, it produces a more symmetrical result than you could get any other way.
What An FP1 Asks Of The Surgeon
Going without pink is harder.
When there is no artificial gum material to work with, the implants must be placed more precisely, and the gum tissue itself must be shaped to match the smile you are designing. There is no forgiveness in the design. It takes more planning, more chair time, and a higher level of detail throughout, which is why an FP1 bridge costs more than the equivalent with pink.
It also needs the right starting conditions. If a patient has plenty of bone and a smile they are already happy with, we can use their own tissue and contour a bridge around it. That is where an FP1 makes sense.
The trade-offs nobody mentions
FP2 and FP3 hide things, and that is a genuine advantage. You will never see the join between the bridge and your own gum, so if the gum recedes over the years, nobody notices.
With an FP1, that join is visible. If you have a high smile line and the gum recedes, you will see it.
The teeth can also read as slightly larger than you might expect, occasionally too large for the smile, because the space that pink would have filled has to go somewhere. Artificial pink, done well, looks more natural in that position than most people assume.
None of this makes one option better than the other. It makes them suited to different mouths.
Where Smile In A Day And 3-On-6 Fit
We do this treatment. We have been doing it since before the term three-on-six existed, which is another practice’s marketing name for it. We call it smile in a day. It is a full-arch restoration split into separate sections, with no pink, so it falls into FP1 territory.
The difference between that and a sectioned full-arch case is flexibility. A fixed protocol divides the bridge at set positions. Doing it as a full arch lets us choose where the divisions fall, which matters when the bone in one of the standard positions is not sufficient to support a joint. Being able to move it is better than being locked into a protocol.
There is a practical reason this connects back to materials. An FP1 bridge is thinner than one with pink in it, and for some patients a 3D-printed provisional is not strong enough at that thickness. Those are the cases where we still build a metal-supported framework, which is otherwise a technique we have largely moved on from on cost grounds.
Serial Extraction Cases
Not everyone is a candidate for immediate function, which is when teeth are placed on implants the same day.
For patients without enough bone, heavy smokers, people whose diabetes is not well controlled, or anyone who needs to spread the cost over time, we use serial extraction. Teeth come out gradually. A temporary bridge spans the entire arch, so you have a smile throughout. Implants get placed in strategic positions and heal below the gum line, underneath that bridge, without being loaded. Once they have integrated, we remove the remaining teeth and move you on to an implant-supported bridge.
Those cases can finish as FP1, FP2, or FP3. In practice, most of them end up as FP1.
How the decision actually gets made
We start with a smile design and a budget, put those together into treatment options, and work backward to the roadmap that gets you there. Bone quality, smile line, bite, and how you want your teeth to look all factor into whether pink belongs in your bridge.
In over 26 years of full-arch work, we have not encountered a situation where we could not help someone avoid dentures. What that takes is a consultation, imaging, and an honest conversation about what you want.
Book a consultation to talk through your options by calling (833) 454-4579 or by requesting one online.