How Braces and Aligners Destroy the Curve of Spee — And What Happens Next
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If you had braces or aligners and your teeth look straight now, you probably consider the treatment a success. Your orthodontist does too. The photos look good. The case is closed.
But there's a structural story unfolding underneath the cosmetic result — one that most people don't notice until five, ten, sometimes fifteen years later. The face starts to look different. The neck tightens. The energy drops. The jaw starts aching. And nobody connects it back to the treatment that happened years earlier.
Here's what's actually happening — and why it keeps happening to so many people who did everything their orthodontist told them to do.
What Braces and Aligners Are Actually Doing
Orthodontic treatment has one primary goal: move teeth into positions that look straight and create a bite the orthodontist considers correct.
To do that, braces and aligners apply sustained force to the teeth over months or years, relocating them within the jawbone. The result, in most cases, is a visibly improved smile. Teeth that were crowded or rotated or spaced unevenly now line up neatly.
What the orthodontist is not thinking about — and was not trained to think about — is what those newly positioned teeth are doing to the Curve of Spee.
In a healthy, untreated mouth, the biting surfaces of the lower teeth form a natural arc when viewed from the side. The back molars sit higher than the front teeth. This curve isn't an accident of development — it's the structural geometry the skull and spine are organized around. The soft tissue covering the cranial bones maintains its tension because the jaw closes into this arc. The whole system is properly supported.
Orthodontic treatment, in the process of leveling and aligning the teeth, routinely flattens this curve. Sometimes deliberately — a flat occlusal plane is often a stated treatment goal. Sometimes as a side effect of repositioning teeth that were sitting where the skull needed them. Either way, the result is the same: the Curve of Spee that the system depended on is gone or significantly diminished by the time the braces come off.
The Three Ways Orthodontics Destroys the Curve
Direct flattening through leveling. "Leveling and aligning" is a foundational orthodontic procedure. It means bringing all the teeth to a common plane — including the back molars, which in a healthy mouth sit elevated above the front teeth in the natural curve. To level them, orthodontists intrude the molars (push them down into the bone) or extrude the front teeth (pull them up), or both. The aesthetic result is a straighter-looking arch. The structural result is that the elevated back molars that held the curve up are now sitting lower, and the curve that ran from front to back has been systematically removed.
The reverse curve wire. In cases where the natural curve is pronounced — what orthodontists call a "deep curve of Spee" — they'll use a wire bent in the opposite direction of the natural arc. This reverse curve wire is explicitly designed to flatten the existing curve. From a structural standpoint, this is the equivalent of deliberately dismantling a load-bearing feature of the jaw's architecture. It's done routinely, in practices around the world, without any consideration of what that flattening does to the skull above it.
Artificial occlusion and accelerated wear. When teeth are moved to positions the skull didn't put them in, the cusps that were shaped by years of natural wear no longer meet their counterparts correctly. The bite is now artificial — it looks right to the orthodontist, but the upper and lower teeth are meeting at angles they weren't designed for. This accelerates wear on the cusps. The molar height that maintained the curve gets ground down faster. And as molar height decreases, the curve flattens further. The retainer then holds the teeth in the artificial position while this wear accelerates — locking the skull into a deteriorating structural position indefinitely.
Why the Teeth Want to Move Back (And Why Orthodontists Get It Wrong)
Here's something that happens to nearly everyone who has orthodontic treatment: within months or years of the braces coming off, the teeth start to shift back toward where they were. Orthodontists call this "relapse." They treat it as a compliance problem — the patient didn't wear their retainer faithfully enough, so the teeth drifted.
But think about what that interpretation actually implies. It implies that the human body — which is extraordinarily intelligent at maintaining equilibrium — is making a mistake. That the teeth are mindlessly drifting into a "wrong" position, and the orthodontist's intervention was right.
I don't buy that.
My interpretation, after a decade of watching this play out in myself and in hundreds of other people, is that the teeth are moving back because the skull is trying to recover its structural stability. The jaw needs to support multiple positions — retrusion, rest, protrusion — through the cusps of the teeth. The orthodontist only accounted for one of those positions when they redesigned the bite. So the skull, detecting instability, starts moving the teeth back toward a position that provides better support.
The retainer is what stops this. It handcuffs the body's recovery attempt and holds the teeth in the artificially imposed position. And while it does that — while it maintains the "straight" smile — the skull continues collapsing inward around the flattened curve, year after year, with no structural support to stop it.
The people I've observed who came off their retainers relatively quickly after treatment have generally fared structurally better than those who wore them for years. The skull got some of its recovery mechanism back. The damage was less total.
What Happens Next: The Delayed Collapse
This is the part that trips people up, because the serious consequences of orthodontic treatment don't usually arrive immediately. The braces come off, the teeth look great, and for a few years, everything seems fine.
But the structural deterioration has started. The Curve of Spee has been flattened. The soft tissue that covered the skull is beginning to lose its tension. The cranial bones are starting to compress inward, very gradually, over years.
The effects become noticeable on a timeline that typically runs five to fifteen years post-treatment, depending on how aggressively the curve was flattened. By that point, the connection to the orthodontic treatment is invisible to the person experiencing it. Nobody tells them "this jaw pain started because of the braces you had in high school." It just gets labeled TMJ, or stress, or poor posture, or aging.
What I've observed consistently, tracking this pattern for nearly a decade across hundreds of cases: people who had braces or aligners lose the structural definition of their face on a predictable timeline. The face "melts," as Mike Mew puts it — the sharp angles soften, the jaw recedes, the cheekbones flatten. The neck shortens. The body widens. Cognitive sharpness dulls. Energy drops.
This isn't aging in the conventional sense. It's a structural collapse that was set in motion the day the Curve of Spee was dismantled — and it runs on physics, not biology.
A Story That Illustrates This
In late 2019, I was in a meeting with a colleague. Healthy guy. Ran his own successful company. Clearly felt on top of things.
In the middle of the conversation he pulled out his aligners — apparently they were uncomfortable. When I saw them I did what I always do: I told him my story and warned him that I thought aligners had serious structural consequences.
He thought I was a lunatic. I heard this through a mutual friend later.
Fast forward to 2025. This guy's neck has effectively disappeared. His body has completely changed shape. He looks like a different person than the one I met in that meeting. His company is a fraction of what it was.
I'm not telling this story to be harsh. I'm telling it because it illustrates exactly the timeline and pattern I've described: fine for a few years, then the structural collapse starts to become visible, and everything downstream follows.
Can the Damage Be Reversed?
Yes. This is the most important thing for anyone reading this who has had orthodontic treatment and is starting to notice the pattern.
The Curve of Spee was destroyed by a structural process. It can be restored by reversing that process. The physics work in both directions.
The mechanism for restoration is the same one I've described throughout this series: add vertical height between the teeth without locking the jaw into a fixed position. This stretches the soft tissue covering the skull. The system begins to re-inflate. The curve starts to return — not because you forced it, but because you created the conditions for the system to recover its natural geometry.
A flat, hard mouthguard worn every night is how you start. Not a retainer that locks your artificial orthodontic bite in place — that's the exact opposite of what you need. A flat, unlocked guard that adds vertical height and lets the jaw move freely, allowing the soft tissue to decompress over months and years of consistent use.
The retainer was holding the system in collapse. The flat guard begins to undo it.
This is a slow process. The damage from orthodontic treatment accumulates over years, and undoing it takes time. But the structure is recoverable. The biology that responds to the right mechanical conditions is the same biology that was compromised by the wrong ones. You just need to give it the right input, consistently, and let time do the rest.
Start the process at getreviv.com
RevivOne is an occlusal guard designed to help reduce bruxism (teeth grinding) and jaw tension during sleep. Individual results vary. The observations and community patterns described in this article reflect the founder's personal experience and reports from community members, and are not intended as medical advice.