Implant-Supported Dentures: The Complete Canadian Guide

What are implant-supported dentures?

Implant-supported dentures (also called overdentures) are a full set of replacement teeth that anchor onto dental implants placed in the jaw, rather than just sitting on the gums. Because they lock onto a fixed foundation, they do not slip, they restore much more chewing power, and they help preserve the jawbone. They are designed for people missing all or most of their teeth in an arch.

Snap-on overdentures vs fixed full-arch

There are two main approaches. A snap-on overdenture uses 2-4 implants with clip attachments; the denture snaps firmly into place but you take it out daily to clean it. A fixed full-arch (such as All-on-4) is permanently screwed onto four or more implants and only comes out at the dentist's office. Fixed feels closest to natural teeth and is the most stable, while snap-on is more affordable and easier to clean at home.

Removable vs fixed: which is right for you?

• Removable (snap-on): lower cost, easy daily cleaning, fewer implants, but slightly less bite force and a small amount of movement compared with fixed.
• Fixed full-arch: maximum stability and the most natural feel, no daily removal, but higher cost and cleaning relies on careful brushing and flossing around the bridge.

If budget is the priority and you do not mind taking your teeth out to clean them, a snap-on overdenture is excellent value. If you want the closest thing to natural teeth and never want to remove them, a fixed full-arch is worth the extra cost. Compare the fixed route in detail in our All-on-4 guide →.

Versus traditional dentures

Conventional dentures rest on the gums and are held in place by suction or adhesive. That means they can rock, slip while eating or speaking, and cause sore spots. Crucially, because nothing stimulates the jawbone underneath, the bone gradually shrinks, which is why old dentures often stop fitting. Implant-supported dentures solve all three problems: they stay anchored, transfer chewing force into the bone to slow that shrinkage, and feel far more comfortable and secure. The trade-off is the higher upfront cost. See how implants compare across the board in our implants vs dentures comparison →.

Cost in Canada (2026)

More implants and fixed (vs removable) designs cost more but add stability. Extractions, sedation, and grafting can add to the total. For a full breakdown, see our dental implant cost guide →.

Who implant-supported dentures suit

• People missing all or most teeth in an arch
• Current denture wearers frustrated by slipping, sore spots, or adhesive
• Anyone facing full extractions who wants more stability than a standard denture
• Patients who want to slow jawbone loss and protect their facial structure

Common questions