A fixed partial denture is a dental restoration that replaces one or more missing teeth by anchoring artificial teeth to your existing natural teeth or dental implants. You probably know it by its more common name: a dental bridge. Unlike removable dentures that you take out at night, a fixed partial denture is cemented permanently in place and functions like your natural teeth.
The restoration has three core parts. The pontic is the artificial tooth (or teeth) that fills the gap where your tooth is missing. The abutments are the natural teeth on either side of the gap that serve as anchors. And the retainers, usually crowns, fit over those abutment teeth to hold everything together as one connected unit.
Types of Fixed Partial Dentures
Not all bridges work the same way. Your dentist will recommend a specific type based on where the missing tooth is, how many teeth are missing, and what condition your surrounding teeth are in.
A traditional bridge is the most common design. It uses crowns on both sides of the gap, bonded to healthy natural teeth, with one or more artificial teeth spanning the space between them. This is the strongest and most reliable option when you have healthy teeth on both sides.
A cantilever bridge attaches to a natural tooth on only one side. The artificial tooth essentially hangs over the gap without support on the other end. Dentists use this when you only have a usable tooth on one side, but the single-sided design makes it less sturdy than a traditional bridge.
A Maryland bridge (also called a resin-bonded bridge) takes a more conservative approach. Instead of crowns, it uses thin metal or porcelain wings that bond to the backs of neighboring teeth. Because it doesn’t require grinding down adjacent teeth, it preserves more of your natural tooth structure. The tradeoff is strength: Maryland bridges work well for front teeth but can’t handle the chewing forces of molars.
An implant-supported bridge rests on dental implants rather than natural teeth. Small threaded posts are surgically placed into your jawbone to act as artificial roots, and the bridge attaches to them. This option is typically used when you have three or more missing teeth in a row. The implants need three to six months to fuse with your jawbone before the bridge can be placed, though some cases take longer.
What the Procedure Looks Like
Getting a fixed partial denture typically takes three to five appointments spread over a few weeks. At the first visit, your dentist prepares the abutment teeth by reshaping them so crowns can fit over them. For a traditional bridge, this means removing a layer of enamel from both anchor teeth.
Next, your dentist takes impressions of your teeth. Many offices now use an intraoral scanner to create a detailed 3D model of your mouth, skipping the messy putty trays of the past. These digital models go to a dental lab where technicians design your bridge. Your dentist will also record how your upper and lower teeth come together (your bite) so the final restoration lines up properly.
You’ll wear a temporary bridge while the permanent one is being made. At a follow-up appointment, you try in a preliminary version to check the fit, comfort, and appearance. You can give feedback on how the teeth look and feel, and adjustments are made before the final version is fabricated. Once the permanent bridge is ready, your dentist cements it in place and makes any last fine-tuning adjustments. Some people need an extra try-in appointment to get everything right.
Materials Used in Fixed Bridges
The material your bridge is made from affects how it looks, how long it lasts, and where in your mouth it can go. The most common options fall into a few categories.
Metal-ceramic (sometimes called porcelain-fused-to-metal) bridges have a metal framework underneath with a porcelain coating on top. The metal provides strength while the porcelain gives it a tooth-like appearance. This combination has been the standard for decades and remains a reliable choice, especially for back teeth that take heavy chewing forces.
All-ceramic bridges, particularly those made from zirconia, have become widely popular. Zirconia is a high-strength ceramic that can be milled by computer-guided systems for a precise fit. These bridges look more natural than metal-ceramic options because there’s no dark metal edge that can show at the gum line. They’re a good fit for front teeth where appearance matters most, though modern zirconia is strong enough for back teeth too.
How Long Fixed Bridges Last
Fixed partial dentures have strong survival rates. About 90% of bridges are still functioning at the five-year mark, and research estimates that 92% survive a full ten years. The ten-year success rate, which accounts for bridges that are still in place and complication-free, is roughly 81%.
The most common problems over a ten-year period include the bridge coming loose from an abutment tooth (about a 6% risk), cavities developing on an abutment tooth (around 10% risk), and fractures in the bridge material (about 3% risk). Complete bridge failure due to severe decay or gum disease around the abutment teeth is relatively uncommon, with estimated ten-year risks of 2.6% and 0.5% respectively.
How long yours lasts depends heavily on oral hygiene. The abutment teeth are still vulnerable to decay, and the area where the bridge meets the gum line needs careful cleaning. Floss threaders or interdental brushes help you clean underneath the pontic where food and bacteria collect.
Fixed Bridges vs. Dental Implants
The biggest drawback of a traditional fixed bridge is what it does to healthy teeth. Your dentist has to grind down the abutment teeth on either side of the gap to fit crowns over them, permanently removing healthy enamel from teeth that may have had nothing wrong with them. A dental implant, by contrast, fills the gap without touching neighboring teeth at all.
Bone health is the other key difference. When you lose a tooth, the jawbone beneath it gradually shrinks because it’s no longer stimulated by a tooth root. A traditional bridge sits above the gum line, so it does nothing to prevent this bone loss. Dental implants are placed directly into the jawbone and mimic the stimulation of a natural root, helping preserve bone density over time.
That said, fixed bridges have real advantages. They cost less than implants, don’t require surgery, and the entire process takes weeks rather than months. For someone who isn’t a candidate for implant surgery (due to insufficient bone density, certain medical conditions, or personal preference), a fixed partial denture is a well-proven, durable solution that restores both function and appearance.