A single dental implant typically outlasts a three-unit bridge. Implants show roughly 95% survival at 10 years and can last decades, while bridges average 10 to 15 years and require shaving down two healthy neighbor teeth. Implants also preserve jawbone. Bridges cost less upfront and finish faster, but often need replacement.

At Inspire Dental in Tigard, this is one of the most common questions we get from adults missing a single tooth. A retiree from Summerfield lost a molar to a cracked root canal last spring and sat in our consult room asking the exact same thing. Implant or bridge? Both are good options. They are not equal.

Here is how we walk patients through the decision.

What's the basic difference between a single implant and a three-unit bridge?

A single dental implant is a titanium post placed into the jawbone where the missing tooth used to be. After healing, we attach a custom crown on top. It replaces both the root and the visible tooth. It stands completely on its own.

A three-unit bridge is different. We crown the two teeth on either side of the gap, then attach a fake tooth in the middle that floats above the gum. The neighbors carry the load. According to ADA patient education, this means reshaping two otherwise healthy teeth down to nubs so the crowns fit over them.

That tradeoff matters. You are trading the structure of two healthy teeth to replace one missing one.

How long does each option typically last?

This is where the gap shows. Peer-reviewed implant literature, including a widely cited Moraschini review in the International Journal of Oral and Maxillofacial Surgery, reports 10-year survival rates around 95% for single dental implants. Many last 20, 30, or more years with good care.

Three-unit bridges average 10 to 15 years before they need to be replaced or rebuilt. Some last longer. Many do not.

The failure modes are different too. Bridges most often fail because the anchor teeth underneath develop decay or fracture under the crowns. Once one abutment goes, the whole bridge goes. Implants, when they fail late, almost always fail from peri-implantitis, a gum infection around the post. The American Academy of Periodontology links peri-implantitis closely to smoking and uncontrolled gum disease.

That's the whole trick. Implants do not get cavities. Bridges can.

How do they compare on bone health?

This part gets overlooked, and it matters more over time than most patients expect.

A natural tooth root pushes chewing forces into the jawbone every day, which signals the bone to stay strong and full. An implant does the same thing. According to NIDCR and AAOMS patient resources, this stimulation helps preserve bone volume in the area.

A bridge does not. The fake tooth in the middle hovers above the gum. Nothing pushes down into the bone underneath. Over five, ten, fifteen years, that ridge can shrink. The gum line drops. A visible dark gap or shadow can appear under the bridge, especially in the front of the mouth.

For a King City patient planning to keep the same tooth replacement for 20 plus years, that bone-preserving piece often tips the decision toward an implant.

What about cost and timeline?

Bridges win on speed and upfront cost. Implants win on lifetime value. Both are true.

A bridge typically takes two visits across two to three weeks. We prep the neighbor teeth, take impressions, place a temporary, and cement the final bridge a couple of weeks later. The upfront cost is generally lower than an implant.

An implant takes longer. From the day we place the post to the day we seat the final crown, it usually runs three to six months because the bone needs time to fuse to the titanium. The upfront cost is higher.

Now stretch the timeline. If a bridge lasts 12 years and gets replaced, that second bridge has its own cost, and the abutment teeth take another beating. If the implant lasts 25 years untouched, the math often flips. We see this constantly with patients commuting in from the Pacific Highway 99W corridor who want a long-term answer, not a redo in their late sixties.

Insurance coverage in Oregon varies widely. Some plans cover bridges as a standard restorative benefit and treat implants as a major or sometimes excluded service. We verify benefits for every Tigard and Tualatin family before treatment starts. No surprises.

Which is right for you?

The honest answer is that it depends on what is happening with the teeth around the gap.

An implant is usually the better call when the neighbor teeth are healthy and have never had a crown or large filling. There is no good reason to grind down two perfectly good teeth.

A bridge can actually make sense when those neighbor teeth already need crowns. If they are cracked, heavily filled, or have had root canals, you are crowning them anyway. Adding a third unit to bridge the gap becomes efficient.

Medical factors come into play for implants. Bone density, controlled diabetes, smoking status, and gum health all affect candidacy. We covered some of this in our posts on implant candidacy with diabetes and with gum disease, and we go through it carefully at consultation.

A 3D cone beam scan is the only way to know for sure what your jawbone can support. We do those in-house.

The neighbor teeth decide the answer more often than the missing tooth does.

Frequently Asked Questions

Is a dental implant always better than a bridge?

Not always. An implant is usually the longer-lasting and more bone-friendly choice for a single missing tooth with healthy neighbors. But if the neighbor teeth already need crowns, a bridge can be the smarter, more conservative restoration because you are not adding a separate surgical step. The right answer is patient-specific.

Can I get a bridge now and switch to an implant later?

You can, but it is rarely ideal. Once a bridge has been in place for years, the bone underneath the missing tooth often shrinks, which can mean needing a bone graft before an implant can be placed. If you suspect you'll want an implant eventually, going straight to the implant usually saves time, money, and bone.

Does insurance cover implants or bridges in Oregon?

Many Oregon dental plans cover bridges under restorative benefits. Implant coverage varies. Some plans cover the crown portion but not the surgical placement, some cover both, and some exclude implants entirely. We run benefits for every patient before we start, so you know your out-of-pocket number up front.

How painful is getting an implant compared to a bridge?

Most patients report less discomfort than they expected for both. Implant placement is a minor surgery, but it is done with local anesthesia and patients usually manage post-op soreness with ibuprofen for a couple of days. Bridge prep is not surgical, but reshaping two teeth can cause sensitivity for a week or two while the temporary is in place.

What happens if a three-unit bridge fails?

It depends on why it failed. If decay developed under one of the abutment crowns and was caught early, we can sometimes treat the tooth and rebuild the bridge. If an abutment fractures or needs to be extracted, the bridge cannot be saved as-is and you are back to deciding between a new bridge, an implant, or a longer-span restoration.

If you are weighing a single tooth implant against a three-unit bridge and want a clear, no-pressure consultation, our team at Inspire Dental is here to help. Call us at (503) 639-4330 to schedule a visit at our Tigard office on SW Pacific Highway. We'll review your options, your scans, and your benefits, and we'll tell you what we would do if it were our own tooth.