Crowns and bridges are two of the most common ways dentists restore damaged or missing teeth. A crown is a cap that fits over a single tooth to protect and strengthen it. A bridge uses crowns on neighboring teeth to anchor one or more artificial teeth across a gap where teeth are missing. Both are custom-made to match your natural teeth in color, shape, and size, and both are permanently cemented in place.
What a Crown Does
A crown covers an entire tooth down to the gumline, essentially replacing the visible outer structure while keeping the natural root intact underneath. Dentists recommend crowns most often for fractured or cracked teeth, teeth that have had root canal treatment, teeth with large cavities, and teeth where an existing filling has broken down and there isn’t enough healthy tooth structure left to hold a new one.
Think of it as a protective shell. Once a tooth is significantly weakened, a regular filling may not provide enough structural support. A crown wraps around the tooth on all sides, distributing biting forces evenly so the tooth can function normally again. Crowns can be made from porcelain, ceramic, metal alloys, or a combination of porcelain fused to metal. Porcelain and ceramic options look the most natural, while metal-based crowns tend to be more durable for back teeth that handle heavy chewing.
What a Bridge Does
A bridge replaces one or more missing teeth by spanning the empty space. It has two main parts: the pontics (artificial teeth that fill the gap) and the abutments (the supporting structures on either side). In most cases, those abutments are your natural teeth, which get fitted with crowns to hold the bridge in place. The whole unit is cemented as one connected piece.
Bridges restore your ability to chew and speak properly, prevent remaining teeth from shifting into the empty space, and maintain the shape of your face. Left untreated, a gap from a missing tooth can cause neighboring teeth to tilt or drift over time, creating bite problems and making future dental work more complicated.
Types of Bridges
There are four main designs, each suited to different situations.
- Traditional bridge: The most common type. A false tooth is held in place by crowns cemented onto healthy teeth on both sides of the gap. The teeth on each side must be reshaped to accommodate those crowns.
- Cantilever bridge: Uses only one neighboring tooth for support instead of two. The false tooth attaches to a single crown on one side. This works when there’s only one suitable tooth next to the gap.
- Maryland bridge: Instead of full crowns, a wing-like metal or porcelain framework is bonded to the backs of the teeth on either side. It’s less invasive because the neighboring teeth don’t need to be reshaped as much, but it’s generally less strong than a traditional bridge.
- Implant-supported bridge: Titanium posts are surgically placed into the jawbone to act as artificial roots, and the bridge attaches to those implants rather than to natural teeth. This option requires two separate surgeries: one to place the implants and a second, after healing, to attach the bridge. It’s the most stable option and doesn’t require altering any natural teeth.
When Each One Is Recommended
The deciding factor is straightforward: crowns are for damaged teeth that are still present, and bridges are for teeth that are missing entirely. A tooth with a large crack, a root canal, or extensive decay that can’t hold a filling gets a crown. A gap left by one or more extracted or lost teeth gets a bridge.
Sometimes the two overlap in a single treatment plan. If you’re missing a tooth and the teeth on either side also need crowns due to damage, a bridge can address all three problems at once. The abutment crowns strengthen those weakened neighbors while the pontic replaces the missing tooth.
What the Procedure Looks Like
Getting a crown or bridge typically takes two to three visits spread over about two to three weeks. The process is similar for both, since a bridge is essentially multiple crowns connected together.
At the first visit, your dentist examines the area, takes X-rays, and determines whether a crown or bridge is the right approach. The supporting teeth are then carefully shaped: a small amount of enamel is removed to create room for the crown to fit over the top. This reshaping is permanent, which is why those teeth will always need crowns going forward.
Next, your dentist takes impressions of your teeth using digital scans or traditional molds. These go to a dental lab where your custom restoration is fabricated. In the meantime, you wear a temporary crown or bridge to protect the prepared teeth and let you eat and talk normally. The temporary is made of a less durable material, so you’ll want to avoid very hard or sticky foods during this period.
At the final visit, the temporary comes off and the permanent restoration is checked for fit, comfort, and bite alignment before being cemented into place. Most people feel some sensitivity for a few days afterward, but it fades quickly.
How Long They Last
Crowns and bridges are durable restorations, but they aren’t permanent. A well-made crown lasts 10 to 15 years on average, and many last longer with good care. A large practice-based study tracking crowns over 11 years found an annual failure rate of just 2.1%, meaning the vast majority stayed functional for the full observation period.
The biggest risk factor for crown failure is whether the tooth underneath has had root canal treatment. Teeth that have been root-canaled are more brittle and about twice as likely to experience crown failure compared to teeth with a living nerve. Your age and the location of the crown also matter: back teeth handle more force and tend to wear restorations faster.
Bridges face similar timelines but have an added vulnerability. Because they depend on the health of the abutment teeth, any decay or gum disease affecting those anchors can compromise the entire bridge. Keeping those supporting teeth healthy is the single most important thing you can do to extend a bridge’s lifespan.
Cost Expectations
Without insurance, a single crown generally costs between $500 and $1,500 depending on the material and location of the dental practice. A three-unit bridge (two crowns plus one pontic) typically runs $1,500 to $5,000. Implant-supported bridges cost more because of the surgical component. Dental insurance often covers 50% of crown and bridge work after your deductible, though coverage varies widely by plan.
The material you choose affects the price. All-porcelain and all-ceramic restorations tend to cost more than porcelain-fused-to-metal options. For front teeth where appearance matters most, the added cost of a natural-looking material is often worth it. For molars, a porcelain-fused-to-metal crown offers a good balance of durability and aesthetics at a lower price point.
Caring for Crowns and Bridges
Crowns are simple to maintain. You brush and floss them exactly like natural teeth. The crown itself can’t decay, but the tooth underneath it can, especially at the margin where the crown meets the gumline. Thorough brushing and daily flossing keep that vulnerable junction clean.
Bridges require a bit more effort because you can’t floss normally between the connected teeth. The space between the pontic and your gums is a trap for food and bacteria, and standard floss can’t reach it. Three tools make this manageable:
- Super floss: A specialty floss with a stiff, threader-like end and a spongy middle section. You thread the stiff end under the bridge, then slide the spongy part back and forth along the base of the pontic to clean underneath.
- Floss threaders: Small nylon loops that guide regular floss under the bridge. You thread the floss through the loop, pass the threader between the bridge and gumline, then floss as usual.
- Interdental brushes: Tiny bottle-shaped brushes that slide between the pontic and gums. Your dentist can help you pick the right size for the space under your bridge.
An oral irrigator (a device that shoots a targeted stream of water) can also help flush debris from under a bridge, though it works best as a supplement to flossing rather than a replacement. Regular dental checkups let your dentist monitor the fit of your restoration and catch any developing problems with the supporting teeth or gums before they become serious.