Dental Implant vs Bridge: How to Choose for a Missing Tooth

For a single missing tooth, an implant replaces the tooth and its root without touching the teeth on either side. A bridge replaces the tooth by crowning the two neighbors and suspending a false tooth between them. The implant is the better long-term answer for most people. The bridge is the better answer for a specific and not-small group, and knowing which group you are in is the whole decision.

How Each One Works

An implant is a titanium post placed in the jaw where the root used to be. The bone heals around it over several months, and a crown is then attached to it. It stands alone.

A conventional bridge is three crowns joined together. The outer two are cemented onto the teeth either side of the gap, which are reshaped to receive them. The middle one fills the space. The bridge is one piece and is not removable.

The Neighboring Teeth

This is the argument that decides most cases. To fit a bridge, the teeth beside the gap are cut down to small cores. If those teeth are healthy and unrestored, that is a permanent trade of two good teeth for one missing one. If they already have large fillings or crowns, there is nothing to lose, and the bridge becomes far more reasonable.

An implant leaves the neighbors alone entirely.

Bone

When a tooth is lost, the bone that held it begins to shrink, because nothing is loading it. An implant loads the bone and largely stops that process. Under a bridge, the bone beneath the false tooth continues to shrink, which over years can leave a visible gap under the bridge and a step in the gumline. On a back tooth that is cosmetic. On a front tooth it eventually shows.

Lifespan

A bridge commonly lasts ten to fifteen years. The weak point is not the bridge but the teeth under it: decay at the crown margins, or a root canal or fracture in a tooth that is now carrying extra load. When a bridge fails, it usually fails on three teeth at once.

An implant, maintained well, commonly lasts decades. The crown on it may need replacing at some point, but the implant itself is expected to outlast a bridge by a wide margin. The main threat is peri-implant disease, which is preventable with cleaning and check-ups.

Cleaning

An implant crown is flossed like a tooth. A bridge cannot be flossed between its units; floss has to be threaded underneath it every day. People who do not do that get decay on the supporting teeth, which is the most common reason bridges are lost.

Time

A bridge is fast: two or three visits over a few weeks. An implant takes longer, usually three to six months between placement and final crown, sometimes longer if bone grafting is needed first. A temporary tooth covers the gap in the meantime. Our guide to temporary options for a missing front tooth explains those.

When a Bridge Is the Better Choice

• The teeth either side of the gap already have crowns or large fillings
• There is not enough bone for an implant and grafting is not wanted
• A medical condition or medication makes implant surgery inadvisable
• Speed matters more than longevity in your situation
• The implant option is out of reach financially and the gap needs closing now

Front Teeth and the Maryland Bridge

For a missing front tooth, especially a lateral incisor, there is a third option: a resin-bonded bridge, often called a Maryland bridge. A false tooth with a thin wing is bonded to the back of one neighboring tooth with little or no drilling. It is conservative, quick, and can last years in a low-load position. It is also a common long-term temporary while an implant site heals, or a permanent solution for someone too young for an implant. It is not strong enough for back teeth.

Multiple Missing Teeth

When several teeth in a row are gone, two implants can support a bridge between them, combining the strengths of both approaches: no natural teeth are cut down, and fewer implants are needed than one per tooth. For a whole arch, that idea scales up into a fixed full-arch restoration.

Cost

A bridge usually costs less up front. An implant costs more up front and, because it typically lasts longer and does not put the neighboring teeth at risk, often costs less over a lifetime. Insurance frequently covers more of a bridge than an implant, which is worth checking before deciding.

Dr. Pan places implant crowns and makes bridges in Wilmington, with the crowns and bridges fabricated in our own lab. If you are weighing the two, the exam that settles it takes one visit. Related reading: replacing a single front tooth and how missing teeth affect more than your smile.