Denture Relines: How to Fix Loose Dentures (Hard vs. Soft)

If your denture used to fit well and now slips, clicks, traps food, or rubs sore spots, here's some good news: you probably don't need a whole new denture. In many cases you need a reline — a refit of the surface that touches your gums. It's one of the most common procedures we do, it's quick, and it can make a five-year-old denture feel close to new. Here's how it works and how to know which kind you need.

Why dentures get loose (it's not the denture's fault)

Your denture hasn't changed shape — you have. Gums and the jawbone underneath them slowly remodel over the years. Without natural tooth roots to stimulate it, the bone gradually shrinks (this speeds up noticeably in the first year after extractions), and the gum tissue follows. The denture, meanwhile, keeps the exact shape of your mouth as it was the day it was made.

So a gap slowly opens between the denture and your gums — and that gap is behind almost every classic complaint:

• Slipping and clicking — the denture rocks on high spots instead of sitting evenly;
• Food trapping underneath — there's now space for it to sneak into;
• Sore spots — pressure concentrates on a few small areas instead of spreading across the whole ridge;
• More and more adhesive — you're using paste to fill a gap that keeps growing;
• Chewing fatigue — your muscles work overtime stabilizing a denture that won't sit still.

A reline resurfaces the fitting side of your existing denture so it matches your gums as they are today. Your teeth, your bite, and the look of your denture stay exactly the same — only the fit surface is renewed.

Hard reline

A hard reline adds a new layer of durable acrylic to the fitting surface. We capture the current shape of your ridge, and the lab bonds fresh acrylic to the denture base in precisely that shape. It's the standard, long-lasting choice for a denture that's otherwise in good condition.

• ✔ Durable — typically restores fit for years;
• ✔ Restores a snug, stable, evenly supported fit;
• ✔ Hard surface cleans easily and resists staining;
• ✔ Cost-effective — a fraction of the price of a new denture.

Soft reline

A soft reline uses a cushioned, pliable silicone-based material instead of hard acrylic. Think of it as a shock-absorbing liner between the denture and your gums — ideal for patients with tender, flat, or bony ridges who find a hard surface uncomfortable no matter how well it fits.

• ✔ Gentle on sore, thin, or atrophied gums — pressure is cushioned rather than transmitted directly to bone;
• ✔ Excellent after extractions, keeping an immediate denture comfortable while tissues shrink and settle;
• ✔ Often the difference between "I can't wear my lower" and wearing it all day;
• ✖ The soft material wears and needs replacing more often than a hard reline (typically every 1–2 years);
• ✖ Slightly more care needed when cleaning — some soaking solutions degrade soft liners.

How the process works

A reline is straightforward: we take an accurate registration of your current gum shape using your denture as the tray, and the new surface is processed in our in-house North York lab — which is why we can typically turn a reline around the same day or within a day, instead of the week-plus you'd wait with clinics that ship work to a commercial lab. You leave with the same denture, fitting the way it used to.

When a reline isn't the answer

A reline renews the fit — it can't fix everything. If the denture is cracked, if the teeth are worn flat, or if the bite has collapsed with years of wear, a reline is a band-aid on the wrong problem, and we'll say so rather than take your money for a fix that won't satisfy you. In those cases a new digital denture — milled to a 3-micron fit — is the honest answer.

And one pattern deserves its own mention: if you're relining your lower denture over and over and it still won't stay put, the problem isn't the reline — it's that your lower ridge no longer offers enough shape for any denture to grip. That's the classic sign it's time to consider an implant-retained overdenture, which anchors to implants instead of relying on a ridge that's no longer there. Need something fixed fast in the meantime? We also offer same-day repairs and relines.