What This Guide Covers and Who It Is For
This guide compares two of the most common ways to replace a missing tooth: a dental implant and a fixed bridge.
If you have lost a tooth due to decay, gum disease, or injury, you are likely weighing these two options. Both can restore your ability to chew and speak normally. Both can look natural. But they differ in how they work, how long they last, what they cost, and what they require from your mouth.
This guide walks through each option side by side so you can have a more informed conversation with your dentist or prosthodontist. A prosthodontist is a dental specialist with advanced training in restoring and replacing teeth. [1] You can learn more about this specialty on the prosthodontics page.
The best choice depends on your bone health, the condition of the teeth next to the gap, your overall health, your budget, and how quickly you need the tooth replaced. No single answer is right for everyone.
How Implants and Bridges Work
An implant and a bridge replace a missing tooth in fundamentally different ways.
How a Dental Implant Works
A dental implant is a small titanium post that a surgeon places directly into the jawbone where the tooth root used to be. Over several months, the bone grows around the post in a process called osseointegration. Once the post is stable, a connector piece called an abutment is attached. A custom crown is then placed on top of the abutment.
Because the implant fuses with the bone, it acts like a natural tooth root. It stimulates the jawbone when you chew, which helps prevent the bone loss that typically follows tooth loss. [2] The crown sits on the implant alone. It does not touch or depend on neighboring teeth.
Implant treatment typically requires two or more stages spread over three to six months, though timelines vary. Some cases allow for an implant and a temporary crown on the same day.
How a Fixed Bridge Works
A fixed bridge fills a gap by attaching a false tooth, called a pontic, to crowns cemented onto the teeth on either side of the space. These supporting teeth are called abutment teeth. To fit the crowns, the dentist must remove a layer of enamel from those abutment teeth.
Once the abutment teeth are prepared, impressions are taken and a dental lab creates the bridge. A temporary bridge protects the prepared teeth while the permanent one is being made. The final bridge is cemented in place, typically within two to four weeks. [2]
A bridge does not replace the tooth root. Because there is nothing stimulating the bone beneath the pontic, some bone loss in that area can occur over time.
Longevity and Durability
Implants generally have a longer functional lifespan than bridges. Published research shows that implants can last 20 years or more with proper care. The implant post itself often lasts a lifetime, though the crown on top may need replacement after 15 to 20 years due to normal wear.
Bridges typically last 10 to 15 years, though some last longer with excellent oral hygiene. [2] Over time, the cement holding the bridge can weaken. Decay can also develop under the crowns on the abutment teeth, which may require the bridge to be remade or replaced.
Because a bridge depends on neighboring teeth for support, problems with those teeth affect the entire restoration. If an abutment tooth develops a cavity or fractures, the bridge may fail even if the pontic itself is intact.
Impact on Jawbone and Adjacent Teeth
Bone health is one of the most significant differences between these two options. After a tooth is lost, the jawbone in that area begins to resorb, meaning it gradually shrinks. An implant helps slow or prevent this process because it transfers chewing forces into the bone, much like a natural root. [2]
A bridge does not stimulate the bone beneath the pontic. Over many years, the ridge of bone under the false tooth can lose volume. This does not typically cause pain, but it can create a visible gap between the pontic and the gum line.
Bridges also require permanent alteration of the two teeth on either side of the gap. Removing enamel from healthy teeth increases their long-term risk of sensitivity, decay, and fracture. If those teeth already have large fillings or crowns, this trade-off may be less significant.
Practical Details: Timing, Health, and Candidacy
Your overall health, bone density, and the condition of your remaining teeth all shape which option is right for you.
Who Is a Good Candidate for an Implant
Implant candidates need enough jawbone to support the titanium post. If bone has been lost, a bone graft may be needed first, which adds time and cost. Your gums must be healthy, and any active gum disease should be treated before implant placement.
Certain medical conditions can affect healing. Uncontrolled diabetes, heavy smoking, and some medications that affect bone metabolism may increase the risk of implant failure. These factors do not always rule out implants, but they require careful evaluation. [1]
Most adults are candidates for implants. Younger patients whose jaws are still growing, typically those under 18, are generally advised to wait. There is no upper age limit as long as health and bone quality are sufficient.
Who Is a Good Candidate for a Bridge
A bridge requires two strong, healthy teeth on either side of the gap. If the neighboring teeth already have large restorations such as crowns or fillings, using them as bridge supports may be a reasonable option because they have already been structurally modified.
Bridges can work well for patients who cannot undergo surgery due to medical conditions, for those who prefer a shorter treatment timeline, or for patients whose bone is insufficient for an implant and who prefer not to have a bone graft.
A bridge is also sometimes preferred when replacing a tooth in certain locations where the bite forces and anatomy make the treatment straightforward.
Treatment Timeline
A bridge is significantly faster to complete. The entire process, from tooth preparation to final cementation, typically takes two to four visits over two to four weeks.
An implant takes longer. After the post is placed, the healing and osseointegration period usually requires three to six months before the final crown can be attached. If a bone graft is needed beforehand, total treatment time can extend to nine months or more.
Some patients receive an immediate temporary crown on the same day the implant is placed. This temporary looks like a tooth but is not meant for full chewing. The permanent crown is placed after healing is complete.
What to Expect: Step-by-Step Process
Both treatments involve multiple appointments, but the steps and recovery experiences are different.
The Implant Process
The first step is a thorough evaluation. Your dentist or prosthodontist will take X-rays or a 3D scan (called a cone-beam CT, or CBCT) to assess bone volume and plan the exact position for the implant. [1]
During the surgical appointment, the area is numbed with local anesthesia. The surgeon makes a small opening in the gum, places the titanium post into the jawbone, and closes the gum tissue over or around it. Most patients describe the discomfort afterward as mild to moderate, similar to a tooth extraction. Over-the-counter pain medication is typically sufficient.
After three to six months of healing, you return for the second phase. The abutment is connected to the implant, impressions are taken, and a custom crown is fabricated. The final crown is then attached to the abutment. You leave with a restoration that looks and functions like a natural tooth.
Care is straightforward: brush and floss the implant crown the same way you would a natural tooth. Regular dental checkups allow your provider to monitor the implant over time.
- Evaluation and planning with imaging
- Surgical placement of the titanium post
- Healing period of three to six months (osseointegration)
- Abutment connection and impressions
- Final crown placement
The Bridge Process
At the first appointment, the dentist prepares the two abutment teeth by removing enamel to create room for the crowns. This is done under local anesthesia. Impressions of the prepared teeth and the gap are taken and sent to a dental lab.
A temporary bridge is placed to protect the prepared teeth while the permanent bridge is being made. This usually takes one to three weeks. At the second appointment, the temporary bridge is removed and the permanent bridge is tried in, adjusted for fit and bite, and cemented into place.
Caring for a bridge requires regular brushing and special attention to cleaning underneath the pontic. A floss threader or interdental brush helps remove food and plaque from under the false tooth and around the abutment crowns. [2]
- Preparation of abutment teeth and impressions
- Temporary bridge placement
- Lab fabrication (one to three weeks)
- Permanent bridge cementation and bite adjustment
Cost Comparison: Implant vs. Bridge
Implants cost more upfront, but the long-term cost comparison is more nuanced than the initial price suggests.
A single dental implant, including the post, abutment, and crown, typically costs between $3,000 and $6,000. If a bone graft is needed, that can add $500 to $3,000 depending on the type and extent of grafting. Costs vary by location, provider, and case complexity.
A three-unit fixed bridge typically costs between $2,000 and $5,000. Costs vary by location, provider, and case complexity. The lower upfront cost makes a bridge appealing when budget is a primary concern.
However, a bridge may need to be replaced once or twice over a lifetime, and any damage to the abutment teeth may require additional treatment such as root canals or new crowns. When you factor in replacement costs, an implant may prove more cost-effective over 20 to 30 years.
Insurance coverage varies widely. Many dental plans cover bridges as a standard benefit. Implant coverage has become more common but is still not universal. Check with your insurance provider for specifics about your plan. Some offices offer payment plans that can help spread the cost over time.
When to See a Prosthodontist
A prosthodontist should be consulted when the case involves complex factors such as bone loss, multiple missing teeth, or bite problems.
General dentists routinely place bridges and, in some cases, implants. Many straightforward single-tooth replacements can be handled in a general dental office. However, certain situations benefit from the advanced training a prosthodontist receives. [1]
Consider seeing a prosthodontist if you have significant bone loss in the area of the missing tooth, if multiple teeth are missing, if the teeth next to the gap are already compromised, if you have a complex bite relationship, or if a previous implant or bridge has failed. A prosthodontist completes an additional two to three years of specialty training beyond dental school, focusing specifically on the restoration and replacement of teeth. [1]
You can also see a prosthodontist simply for a second opinion. If you are unsure whether an implant or a bridge is the better option, a specialist can provide an assessment based on your specific anatomy and health history. Visit the prosthodontics page to learn more about what these specialists do.
- Significant bone loss at the site of the missing tooth
- Multiple adjacent or scattered missing teeth
- Compromised or heavily restored abutment teeth
- Complex bite issues or jaw alignment concerns
- Previous implant or bridge failure
- Need for combined treatment involving dentures, implants, or other prosthetics
Find a Prosthodontist Near You
A prosthodontist can evaluate your bone health, the condition of your neighboring teeth, and your overall oral health to help you choose between an implant and a bridge. Use our directory to find a qualified prosthodontist in your area and take the next step toward replacing your missing tooth with confidence. Visit the prosthodontics page to browse specialists and learn what to expect at your first appointment.
Search Prosthodontists in Your Area