A fixed partial denture is a dental restoration that permanently replaces one or more missing teeth by anchoring artificial teeth to the natural teeth (or implants) on either side of the gap. You’ve probably heard the more common name: a dental bridge. Unlike removable dentures that you take out at night, a fixed partial denture is cemented in place and stays in your mouth full-time, functioning like your natural teeth.
How a Fixed Partial Denture Works
Three main components are locked together in a single unit: the pontic, the retainer, and the connector. The pontic is the artificial tooth that fills the empty space where your natural tooth used to be. It’s shaped and colored to match your surrounding teeth so it blends in visually and restores your ability to chew normally.
The teeth on either side of the gap are called abutments. These are your anchor points. They get fitted with crowns (the retainers), which are then connected to the pontic by a connector piece. The whole assembly works as one solid unit. The rigid support provided by the abutment teeth needs to be strong enough to handle the chewing forces placed on the pontic, which is why the health of those supporting teeth and the surrounding bone is critical to long-term success.
Connectors come in two varieties: rigid (locked solid) and non-rigid (functioning more like a hinge). Your dentist chooses based on the specific location and forces involved.
Types of Fixed Bridges
Not all bridges are built the same way. The type you receive depends on where the gap is, how many teeth are missing, and the condition of the teeth around it.
- Traditional bridge: Crowns are placed on the natural teeth on both sides of the gap, with the artificial tooth suspended between them. This is the most common design and works best when you have healthy teeth flanking the space.
- Cantilever bridge: Anchored to only one adjacent tooth instead of two. Because it has support on just one end, it’s best suited for areas with less biting pressure, typically the front teeth.
- Maryland bridge: Uses a metal or porcelain framework that gets bonded to the back of the adjacent teeth, rather than requiring full crowns over them. This means less removal of healthy tooth structure, making it a good option for replacing front teeth with minimal preparation.
Common Materials
The material your bridge is made from affects how it looks, how long it lasts, and where in your mouth it works best.
Zirconia has become one of the most popular choices. It’s resistant to cracking, chipping, and the stress of heavy chewing, and it has a translucent quality that mimics real tooth enamel. That makes it easy to color-match to your existing teeth, which is why it’s heavily favored for visible front teeth. It’s also less likely to wear down the teeth it bites against compared to some older materials.
Gold remains an option for back teeth where appearance matters less. Gold crowns withstand wear and tear better than most materials and are particularly useful for people who grind their teeth, since gold handles pressure without breaking or chipping. The tradeoff is obvious: gold has a distinct yellow tone that most people don’t want showing when they smile.
Porcelain fused to metal is another traditional option that offers a balance of strength (from the metal core) and aesthetics (from the porcelain outer layer), though all-ceramic and zirconia options have increasingly replaced it.
What the Procedure Looks Like
Getting a fixed partial denture typically takes two to three appointments spread over a few weeks. At the first visit, your dentist evaluates your oral health, including the condition of the abutment teeth and gums, to confirm a bridge is appropriate. Digital or physical impressions of your upper and lower arches are taken, along with a bite registration that records how your teeth come together.
The abutment teeth are reshaped to make room for the crowns that will sit over them. A temporary bridge is placed to protect those prepared teeth while a dental lab fabricates your permanent restoration. At a follow-up appointment, you may try in a wax or temporary version so you can assess the fit, comfort, and appearance before the final bridge is made. Once the permanent bridge is ready, it’s cemented onto the abutment teeth, and your dentist checks that the bite feels right and makes any final adjustments.
How Long a Bridge Lasts
A well-made fixed partial denture is a durable restoration, but it isn’t permanent. Long-term data shows cumulative survival rates of about 90% at 5 years and 78% at 10 years. After 15 years, roughly 68% of bridges are still functioning, and by 20 years that number drops to about 52%. These numbers reflect all bridges, including those placed in less-than-ideal conditions. With strong abutment teeth, good bone support, and consistent hygiene, many bridges last well beyond 10 years.
The most common reasons bridges fail over time include decay developing on the abutment teeth underneath the crowns, fracture of the porcelain or the connector, and loss of the cement bond holding the bridge in place. Gum disease around the abutment teeth can also compromise the supporting bone and eventually loosen the bridge.
Fixed Bridge vs. Dental Implant
If you’re missing a single tooth, you’ll likely weigh a bridge against a dental implant. These are fundamentally different approaches. A bridge uses the neighboring teeth for support, which means those teeth must be reshaped and crowned even if they’re perfectly healthy. An implant is a standalone post placed directly into the jawbone, topped with its own crown, so it doesn’t involve the adjacent teeth at all.
Implants generally cost more. The American Dental Association reports that a single implant can run between $1,600 and $2,200, and that’s before the crown on top. A three-unit bridge can cost up to $2,500 total for one missing tooth, making it the less expensive option in many cases. Implants do require adequate jawbone to anchor into, which not everyone has without additional grafting procedures. Implant failures occur roughly 5% to 10% of the time.
The advantage of an implant is that it preserves the neighboring teeth and stimulates the jawbone the way a natural tooth root does, which helps prevent bone loss over time. The advantage of a bridge is speed and simplicity: it requires no surgery and can be completed in a few weeks rather than the several months an implant typically needs to integrate with the bone.
Cleaning and Maintenance
A fixed bridge can’t get cavities on the pontic itself, but the abutment teeth underneath the crowns absolutely can. Decay at the margin where crown meets tooth is one of the leading causes of bridge failure, so daily cleaning is essential.
Brush your bridge the same way you brush natural teeth, paying extra attention to the gumline on the inner side where plaque tends to accumulate. An electric toothbrush can help reach those spots. The area underneath the pontic, where it sits against your gum, is the trickiest part to clean. Regular floss can’t pass through a solid bridge, so you’ll need specialized tools:
- Floss threaders or super floss: These let you pass thick floss underneath the pontic and between the abutment teeth to clean along the gumline with a sideways stroke.
- Interdental brushes: Small brushes that fit between the teeth and under the bridge. Use them gently in a back-and-forth motion against the sides of the abutment teeth and the underside of the pontic.
- Water flosser: A pressurized stream of water helps flush out stubborn food debris from under and around the bridge that other tools miss.
Regular dental checkups are important for catching early signs of decay or cement loosening before they become bigger problems. Your dentist can also monitor the gum tissue under the pontic and the bone level around the abutment teeth to ensure the bridge stays well supported over time.