Restoring Your Bite After Severe Tooth Wear From Grinding

By Dr. Boris Zusin · Published September 8, 2026

Our teeth grinding page covers what long-term, untreated grinding can do to a bite — flattened back teeth, chipped and worn front teeth, and compensatory eruption that quietly closes up the room needed to fix it. This page goes a level deeper: once that point is reached and it's time to actually rebuild the bite, here's how that's done safely in a patient who still grinds.

Raising Bite Height Doesn't Treat the Grinding — It's a Restorative Decision

It's worth being direct about this upfront: increasing your occlusal vertical dimension (OVD) — essentially, the height of your bite when your back teeth are together — is not a treatment for bruxism itself, and it won't make the grinding stop. The evidence is explicit that irreversible bite changes shouldn't be used as an attempt to "cure" grinding or TMJ disorder. The reason to raise OVD is purely restorative: to regain the physical space needed to rebuild teeth that wear has worn down, and to restore function and appearance. Treating the grinding itself — usually with a protective nightguard — is a separate, parallel goal.

The Key Caveat: Worn Teeth Don't Always Mean Lost Bite Height

A common assumption is that severe wear must mean the bite has "collapsed" and needs to be built back up. That's often not the case. As covered on our grinding page, teeth typically keep erupting to compensate for wear (compensatory eruption), which tends to preserve your overall bite height even as the visible crowns get shorter. The best-evidence consensus on this question found no proof that worn teeth in a grinder erupt so much that raising OVD becomes mandatory — and the amount of extra room available naturally between the teeth when the jaw is at rest (freeway space) varies enormously from person to person, averaging around 3mm but ranging anywhere from 1 to 9mm. In practice, this means OVD should be raised deliberately, to create room for the restorations you need — not on the assumption that height was lost and must be "restored."

How Much Room Is Needed, and What Happens When You Open It

That naturally available freeway space is the real constraint on how much room can be gained. Rebuilding badly worn back teeth often calls for opening the bite by 3mm or more, which can bring the jaw close to, or past, its natural resting position — which is exactly why this isn't done blindly. Opening the bite does temporarily increase muscle activity in the jaw at rest and during clenching, but research following patients through this adjustment found that activity settles back toward baseline within 3 to 4 months as the jaw and muscles adapt, with no evidence connecting the increase to lasting pain.

Testing the New Bite Before Anything Irreversible Happens

Because of that adaptation period, the new bite height is always tried out reversibly first, before any tooth is permanently reshaped. Two main ways this is done:

• A removable splint or long-term temporary restorations built at the full planned bite height — the traditional way to confirm the jaw muscles and joints tolerate the change before committing to it.
• Bonded mock-up restorations placed directly at the new bite height are increasingly preferred over removable splints, since they don't depend on the patient actually wearing something consistently, and they let both patient and dentist see and feel a much closer preview of the final appearance and function.

Whether a patient also has a TMJ disorder helps decide which path fits best: patients with TMJ symptoms, or who need their jaw guided into a new position, are generally better served starting with a rigid, adjustable splint; patients without TMJ symptoms can often move more directly to esthetic temporary restorations.

Rebuilding the Teeth: Minimally Invasive Whenever Possible

Once the new bite height is confirmed to be well tolerated, the actual restorative work favors additive, tooth-preserving techniques over aggressively cutting teeth down for full crowns — raising the bite height is itself what creates the needed space, so heavy tooth preparation usually isn't necessary. Options with real supporting evidence include bonded ceramic onlays or thin occlusal veneers on the back teeth (one material choice, lithium disilicate, has shown essentially 100% survival over an average of 8 years in this exact use), ultra-thin bonded veneers on the front teeth, direct composite build-ups (the most common and least invasive approach, though more prone to needing repair over time in a patient who continues to grind), and increasingly, digitally planned, CAD-CAM-guided full-mouth approaches that map out the entire new bite before any tooth is touched — one such digitally planned case has held up well through 9 years of follow-up.

Bruxism Changes the Math on Materials and Expectations

Ongoing grinding is, on its own, a proven risk factor for restorations failing sooner — alongside things like inconsistent oral hygiene and simply how long the restoration has been in place. Ceramic tends to hold up better than composite under this kind of load (one study found roughly 98% of ceramic veneers still intact after 6 to 8 years, versus about 92% of composite ones, which failed more often from wear and fatigue), and restorations made in a lab (indirect) generally outlast those built directly in the mouth for localized wear cases. None of this means restoring a grinder's bite isn't worthwhile — it means going in with realistic expectations that some repair or maintenance along the way is part of the plan, not a sign something went wrong.

Localized Front-Tooth Wear: The Dahl Approach Revisited

For wear that's mostly limited to the front teeth, with the back teeth still meeting normally and no signs of lost bite height, the "Dahl" approach mentioned on our grinding page — a small platform placed at a slightly increased height that lets the front teeth settle down while the back teeth erupt into new contact — has a solid track record: pooled results show the back teeth typically re-establish full contact in roughly 87% of cases, most often within about 1 to 25 months, and restorations placed in a lab tend to fail less often than those built directly at the chair. That said, the evidence base behind exactly why this works, and how durable it is long-term, is still considered relatively limited, and occasional cases where it doesn't fully succeed have been reported — which is part of why it's monitored closely rather than assumed to work automatically.

The One Step That Isn't Optional: Protecting the New Bite for Life

Whatever combination of restorations is used, the same forces that wore down the original teeth are still there afterward if the grinding itself isn't controlled. That's why a custom nightguard or occlusal splint, worn consistently, is a standard, non-negotiable part of the plan once restorative work at a new bite height is complete — it won't eliminate grinding, but it shields the investment in the new bite from the same fate as the original teeth. See our TMJ Appliances page for more on how these are custom-fitted, or our guide to caring for a nightguard to keep it working as intended.