Why the Best Full-Arch Solution Isn't the Same for Everyone
If you've been researching full-arch implants online, you've probably come across terms like “All-on-4,” “All-on-X,” “teeth in a day,” or similar phrases. What most of that marketing doesn't tell you is that these are implant placement techniques — not descriptions of what your final prosthesis will actually look like or how well it will serve your biology long term.
There's a clinical classification system that actually addresses that question. It's called the FP classification system, developed by Dr. Carl Misch, and it describes three levels of full-arch prosthetics based on how much tissue — bone and gum — needs to be replaced.
At Wise Dental Solutions, we evaluate every full-arch patient using this framework. Not because it's more complicated, but because it leads to better outcomes.
Understanding the Three Levels
Tooth Replacement Only
FP1 is the closest thing to restoring natural teeth. The prosthesis replaces the crowns — the visible teeth — while maintaining or recreating a natural gum and bone architecture beneath them. There's no visible pink acrylic. The teeth emerge from the gumline the way natural teeth do.
This is the most esthetically demanding option because it requires adequate bone volume and soft tissue to be present — or rebuilt — to support that natural emergence. When the biology is right, FP1 produces the most lifelike result possible.
Dr. Weisenberg: Think of it like restoring a house where the foundation and structural framework are still mostly intact. The structure is sound. We're renovating the visible parts.
Tooth Plus Partial Tissue Replacement
FP2 replaces the teeth plus a portion of the gum structure. Some pink material is visible at the gumline to compensate for tissue that has been lost. This is the appropriate choice for patients with moderate bone or tissue loss who aren't candidates for a fully natural FP1 emergence but don't require the full tissue support of FP3.
FP2 bridges the gap between the two extremes, offering strong esthetics with a prosthesis designed to account for a moderate degree of atrophy.
Full Tissue Replacement
FP3 replaces the teeth and a significant amount of gum tissue together. The prosthesis includes a pink gingival flange that provides the tissue and lip support that bone loss has taken away. This is clinically appropriate — and often ideal — for patients with advanced bone loss, collapsed bites, or significant missing tissue.
FP3 is the most common outcome in aggressively marketed “All-on-4” cases. That’s not inherently wrong. For many patients, FP3 is exactly the right answer. The problem is when it’s recommended to every patient regardless of their anatomy — because it’s the simplest workflow, not because it’s the best option for that individual.
Dr. Weisenberg: Think of FP3 like rebuilding major structural support after significant collapse. It’s not a lesser outcome — it’s a different tool for a different situation. When used appropriately, it’s transformative.
Why We Offer All Three
A lot of offices default patients into FP3 because it's the path of least resistance. It requires less precision around tissue architecture. It's faster to plan. And it's easy to market.
At Wise Dental Solutions, we evaluate whether a patient is an FP1, FP2, or FP3 candidate based on their actual anatomy — bone levels measured with a CBCT scan, tissue architecture, smile line, bite dynamics, and long-term goals. Only then do we design the treatment.
Some patients are ideal candidates for FP1 and want the most natural result possible. Others benefit tremendously from FP3 because it restores support, lip structure, and facial aesthetics more predictably than any alternative. The FP level isn't a ranking — it's a prescription.
“My job is not to sell you one procedure. My job is to help you understand the tradeoffs so you can make the right decision for your life.”
— Dr. Micah Weisenberg
What About “All-on-4”?
“All-on-4” is a trademarked implant placement protocol — a technique for anchoring a full arch on four implants, with two posterior implants angled at 45 degrees. It's widely marketed, and in the right patient, it's a legitimate approach.
The issue is that the term has become a catch-all for every full-arch procedure. Patients research “All-on-4” and think they understand their options. What they're actually describing is usually an implant technique that almost always produces an FP3 prosthesis — regardless of whether FP3 is the right solution for them.
Dr. Weisenberg performs full-arch reconstruction using multiple implant placement strategies. What drives the recommendation is always the FP classification — the prosthetic outcome that matches the patient's biology — not the name of a marketing protocol.
Do You Need Bone Grafting First?
One of the most common things patients hear before coming to Wise Dental Solutions is that they're “not a candidate” for implants because of bone loss. That's often not true.
Modern bone augmentation techniques — including ridge augmentation, sinus lifts, and guided bone regeneration — can rebuild the foundation needed to support an FP1 or FP2 result even in patients with significant atrophy. Whether grafting is appropriate depends on the extent of bone loss, your overall health, and what prosthetic outcome you're working toward.
This is evaluated individually at your consultation. We won't know until we look at your scans.