In brief
The difference is what they replace and what they hold onto. Complete dentures replace all the teeth in the upper or lower jaw and rest directly on the gums, staying in place through suction and fit. Partial dentures replace some missing teeth while clasping onto the natural teeth that remain, which gives them anchorage a complete denture does not have. Which one applies is determined by how many healthy teeth you still have — and whether they are worth keeping.
Key takeaways
- Complete dentures replace every tooth in a jaw; partials fill gaps between remaining teeth.
- Partials anchor to natural teeth, giving them stability complete dentures lack.
- Keeping healthy natural teeth also preserves the jawbone around them.
- Both options require an adjustment period and ongoing professional follow-up.
The main difference between complete and partial dentures is how many teeth they replace. A complete denture replaces every tooth in the upper or lower jaw and rests on the gums, while a partial denture fills gaps between your remaining natural teeth and clasps onto them for support. Which one suits you usually depends on how many healthy teeth you still have and whether they are worth keeping.
Both are removable, both restore appearance and chewing, and both take some getting used to. But they feel different in the mouth, they are cared for a little differently, and they have different effects on the teeth and bone that remain. This guide compares them side by side and explains how a dentist helps you decide.
What is a complete denture?
A complete denture is a full arch of artificial teeth set in a gum-coloured acrylic base. The upper denture covers the palate, which helps it hold through suction; the lower is horseshoe-shaped to leave room for the tongue, which is why lower complete dentures are notoriously harder to stabilize.
Fit depends on how precisely the base matches the gum ridges — and because the jawbone slowly remodels once teeth are gone, that fit changes over the years, a process explained in why dentures can become loose over time.
Complete dentures restore appearance, speech and a meaningful portion of chewing function, though eating with them is a learned skill with real limits compared to natural teeth.
Types of complete dentures
- Conventional complete dentures are made after extraction sites have healed, which usually gives the most accurate fit.
- Immediate dentures are made in advance and placed the same day teeth are removed, so you are not without teeth during healing. They usually need relines or replacement as the gums settle.
- Implant-retained overdentures snap onto a small number of implants for extra stability. Our dental implants page explains how implants can support a denture.
What is a partial denture?
A partial denture fills one or more gaps while clasping onto neighbouring natural teeth, typically via a discreet metal or flexible framework. Those anchor teeth change the experience considerably: the partial resists shifting during chewing, distributes force onto teeth rather than only gums, and generally feels more secure than a complete denture from day one.
The trade-off is dependency. A partial is only as good as its anchor teeth, so those teeth must be healthy — and kept healthy, since clasps can trap plaque around them. Part of any partial-denture assessment is an honest judgment about whether the remaining teeth have a sound long-term future.
Types of partial dentures
- Cast metal partials use a thin metal framework with clasps. They are often chosen as a long-term option because the framework is strong and relatively slim.
- Acrylic partials are made mostly of gum-coloured plastic. They are sometimes used as a temporary or transitional option while other treatment is planned.
- Flexible partials use a flexible resin base and tooth-coloured or gum-coloured clasps, which some patients prefer for appearance. They are not suitable for every situation.
Your dentist will explain which designs suit your mouth and why.
Complete vs partial dentures at a glance
| Complete denture | Partial denture | |
|---|---|---|
| What it replaces | All teeth in one jaw | Some teeth, filling gaps |
| How it stays in | Suction and fit on the gums; adhesive for some patients | Clasps or attachments on natural teeth, plus fit on the gums |
| Stability | Upper usually steadier than lower | Usually more stable because natural teeth anchor it |
| Effect on bone | Bone under the whole arch continues to remodel | Natural teeth help preserve bone where they remain |
| Adjustment period | Often longer, especially for lower dentures | Often shorter |
| Main maintenance | Relines as the ridge changes | Care of anchor teeth; relines and repairs as needed |
| CDCP status | Listed as covered | Covered, with preauthorization |
This is a general comparison. Your own experience depends on your gums, bone, remaining teeth and the design chosen.
How does a dentist decide which type you need?
The choice is rarely a preference question; it follows from an examination of what remains. Enough healthy, well-positioned teeth to anchor a partial usually means a partial — preserving natural teeth also preserves the bone around them, which pays off for decades. Few remaining teeth in poor condition may make extractions and a complete denture the more predictable path.
In between sit judgment calls the dentist works through with you during a dentures consultation, weighing each tooth’s prognosis. Factors often include:
- How many teeth remain and where they are. Teeth at both ends of a gap give a partial better support than a single tooth at one end.
- The health of each remaining tooth. Decay, large fillings, cracks and root canal history all affect how long a tooth may last.
- Gum health and bone support. Teeth weakened by gum disease may not hold a clasp well. Our article on early signs of gum disease explains what to watch for.
- Your bite. How the upper and lower teeth meet affects the design and stability of either denture.
- Your priorities. Appearance, stability, keeping particular teeth and budget are all legitimate parts of the plan.
What if some teeth are borderline?
Some patients have a few teeth that could be saved with treatment such as fillings, crowns or a root canal, and others that probably cannot. In that situation, the dentist may suggest treating the stronger teeth and designing a partial around them, or planning a partial that can later have teeth added if an anchor tooth fails. Asking how the plan would change if you lose another tooth in a few years is a very reasonable question.
What happens when you get a new denture?
The steps are similar for complete and partial dentures, although the number of visits varies with the design:
- Examination and X-rays to check the remaining teeth, gums and bone, and to decide whether any teeth need treatment or removal first.
- Impressions of your mouth, so the denture can be made to match your ridges and any remaining teeth.
- Bite records and tooth selection, where the shade, shape and position of the artificial teeth are chosen to suit your face.
- A try-in for many dentures, so you can check the look and bite before the denture is finished.
- Delivery, when the denture is fitted, adjusted and you are shown how to put it in, take it out and clean it.
- Follow-up adjustments over the first few weeks to relieve sore spots and fine-tune the bite.
For a partial, the anchor teeth are sometimes shaped slightly so the clasps and rests sit securely. Your dentist will tell you in advance if that is part of your plan.
Is a partial denture more comfortable than a complete denture?
Many patients find a partial easier to adjust to, because it is smaller, covers less of the mouth and is held steady by natural teeth. A complete upper denture covers the palate, which can affect taste and temperature sensation at first. A complete lower denture often needs the most practice, since the tongue and cheeks move it during speaking and chewing.
That said, comfort depends heavily on fit. A well-made complete denture can be more comfortable than a poorly fitting partial. Sore spots in the first weeks are common with both types and are usually solved with small adjustments at follow-up visits. Our guide on how long it takes to adjust to new dentures describes what the first weeks are usually like.
What are the alternatives to complete and partial dentures?
It is worth knowing the alternatives at each end:
- A fixed bridge. For one or two missing teeth in a row with healthy teeth on either side, a bridge from the crowns and bridges family may compete with a partial. It stays in all the time and does not come out for cleaning.
- Dental implants. A single implant can replace a single tooth, and several implants can support a bridge or a denture. For full-arch replacement, implant support changes the stability picture entirely — that comparison is covered in dentures vs dental implants.
- Leaving a gap. For some back teeth, leaving a space may be a reasonable choice. Your dentist can explain whether neighbouring teeth are likely to drift or the opposite tooth may over-erupt.
What is it like to live with each type?
Both types share a learning curve — speech and eating take days to weeks to normalize — and both demand daily cleaning and nightly removal so the gum tissues can rest. Both also need periodic professional review: complete dentures because the ridge beneath them keeps changing, partials because the anchor teeth need monitoring. Neither is a fit-and-forget device.
Eating and speaking
Start with soft foods cut into small pieces, chew on both sides at once, and build up gradually. Reading aloud can help speech settle faster. Sticky and very hard foods are challenging for both types, and for lower complete dentures in particular.
Daily care
- Remove and rinse the denture after meals when you can.
- Brush the denture daily with a soft brush and a non-abrasive cleaner — regular toothpaste can scratch acrylic.
- Brush your natural teeth carefully, especially around the clasps of a partial, where plaque tends to collect.
- Clean your gums, tongue and palate with a soft brush.
- Keep the denture moist when it is out of your mouth, and remove it overnight unless your dentist advises otherwise.
Our step-by-step guide on how to clean and care for dentures covers products and techniques in more detail.
How long do complete and partial dentures last?
Dentures are commonly replaced somewhere in the range of five to ten years, but the mouth changes underneath them throughout. Complete dentures often need relines as the ridge shrinks, and partials may need repairs to clasps or additions if a natural tooth is lost. A loose, rocking or sore denture is a signal to book a check, not something to tolerate with extra adhesive.
When should you see a dentist about your dentures?
Book a visit if you notice:
- sore spots or ulcers that do not heal within a week or two,
- a denture that has become loose, rocks, or clicks when you talk,
- a cracked, chipped or broken denture or a bent clasp,
- pain, swelling or bleeding around the anchor teeth of a partial, or
- difficulty chewing that you did not have before.
Even with a complete denture and no natural teeth, regular exams remain important. The dentist checks the fit, the health of your gums and the soft tissues of your mouth.
Cost factors and coverage for dentures
Denture fees depend on the type and design, the materials, whether extractions or other treatment are needed first, and whether an immediate denture will be followed by a reline or a new denture after healing. York Street Dental Centre explains estimated fees before treatment begins.
For coverage:
- Private insurance often covers part of the cost of dentures, subject to plan limits and replacement intervals. A predetermination confirms your share ahead of time.
- The Canadian Dental Care Plan lists complete dentures among covered services, and partial dentures require preauthorization. If you are enrolled, see our CDCP page for how we help.
- The medical expense tax credit. The CRA lists dentures as an eligible medical expense, so keep your receipts for amounts not reimbursed by insurance.
Getting fitted for dentures in Cornwall
Many of our denture patients live close to the office — downtown Cornwall, Glenview Heights and Churchill Heights — while others come in from St. Andrews West or Cornwall Island (Akwesasne). Being close to your dental office helps, because a new denture usually needs a few follow-up adjustments in its first weeks, and those short visits are easier when the trip is short too.
At York Street Dental Centre, 118 York Street, Dr. Topouzov and our team examine your remaining teeth and gums, explain whether a complete or partial denture fits your situation, and go over the estimated fees and coverage before anything is made. We see seniors, adults and patients with special needs, and no referral is needed.
Book a denture consultation
If you are missing several teeth, or facing the loss of the ones that remain, an examination can map which option your mouth actually supports, tooth by tooth. Call (613) 932-1620 or request an appointment online, and learn more about dentures at York Street Dental Centre.
Frequently asked questions
Can a partial denture be added to later if I lose more teeth?
Often yes — many partials are designed so a tooth can be added if an anchor tooth is eventually lost. This is worth raising during planning, since it affects the design chosen.
Which is easier to eat with?
Generally the partial, because natural teeth share the chewing load and hold it steady. Complete dentures — especially lowers — require more technique: smaller bites, chewing on both sides, and patience during the adjustment period.
Do I sleep with dentures in?
The standard advice for both types is to remove dentures at night, letting gum tissue recover and reducing infection risk. They should be kept moist while out.
How long do dentures last?
Commonly in the range of five to ten years, though the mouth changes underneath them throughout. Regular check-ups determine when adjustment or replacement is due — a loosening fit is a signal, not a normal state to tolerate.
Does the CDCP cover complete and partial dentures?
The Canadian Dental Care Plan lists complete dentures among its covered services, and partial dentures are covered but require preauthorization. Coverage details and your share of the cost depend on your eligibility, so check the current plan information or ask the dental office to help you understand what applies before treatment begins.
Is a partial denture better than losing the rest of my teeth for a complete denture?
When the remaining teeth are healthy and have a good long-term outlook, keeping them usually helps. They steady the denture, share the chewing load and help preserve the jawbone around them. When the remaining teeth are badly decayed or loose, a complete denture may be more predictable. Your dentist can assess each tooth and explain the trade-offs.
Can dentures be made while I am waiting for extractions to heal?
Often, yes. An immediate denture can be made in advance and placed on the day teeth are removed, so you are not without teeth while healing. Because the gums and bone change a great deal in the first months, an immediate denture usually needs relines or replacement once healing is complete.
Sources
- Canadian Dental Association — Dentures
- Cleveland Clinic — Dentures
- American Dental Association (MouthHealthy) — Dentures
About the author
This article was written by the York Street Dental Centre Team and reviewed for clinical accuracy by the York Street Dental Centre dental team. York Street Dental Centre is a family dental office at 118 York Street, Cornwall, Ontario K6J 3Y8, providing general, preventive, restorative, and cosmetic dental care for patients of all ages.
Our articles explain common dental questions in plain language, cite reputable health and government sources where relevant, and are updated when guidance changes. Read our editorial policy or learn more about our practice.
This content is intended for general educational purposes and does not replace an examination, diagnosis or personalized treatment recommendation from a dental professional.