A Maryland bridge is a type of dental bridge that replaces a missing tooth by bonding thin wings to the back of the teeth on either side of the gap, rather than placing crowns over them. Unlike a traditional bridge, which requires grinding down the neighboring teeth significantly, a Maryland bridge preserves most of your natural tooth structure. It’s one of the most conservative fixed options for replacing a single missing front tooth.
How a Maryland Bridge Is Built
The bridge has two main parts: a replacement tooth (called a pontic) and one or two thin, flat extensions called wings or retainers. The wings are bonded with resin cement to the back surfaces of the teeth flanking the gap, so they’re hidden from view when you smile. In many cases, the wings can be placed with little to no drilling of the neighboring teeth, which is a major advantage over conventional bridges that require reshaping those teeth into smaller pegs to fit crowns.
Traditionally, the wings were made of metal. Today, zirconia ceramic is the material of choice because it blends with the natural tooth color and eliminates the grayish shadow that metal wings sometimes cause. All-ceramic versions made from glass ceramic or alumina-based materials are also used, and they tend to deliver excellent results both cosmetically and functionally.
Who It Works Best For
Maryland bridges are most commonly used to replace a single missing front tooth, typically an upper incisor. They’re particularly well suited for adolescents and young adults who lose a tooth to trauma or who were born without one. Dental implants, while often considered the gold standard for adults, aren’t ideal for teenagers because their jaws are still growing. An implant placed before growth is complete can end up sitting lower than the surrounding teeth over time. A Maryland bridge fills the gap during those years and can be replaced with an implant once jaw development finishes.
For adults, Maryland bridges work well when the teeth on either side of the gap are healthy and have plenty of enamel on their back surfaces. They’re a good option if you want to avoid the more aggressive tooth preparation that a traditional bridge demands or if you’re looking for a fixed (non-removable) alternative that doesn’t involve surgery.
When a Maryland Bridge Isn’t a Good Fit
Not everyone is a candidate. The neighboring teeth need enough intact enamel on their back surfaces for the adhesive bond to hold. If those teeth already have large fillings or significant decay, a Maryland bridge won’t bond reliably. Short clinical crowns (teeth that don’t extend far enough above the gumline) can also limit the available bonding surface.
Teeth grinding and clenching are the most commonly cited risk factors for failure. Heavy bite forces stress the adhesive bond and can pop the wings loose. If you grind your teeth at night, your dentist may still consider a Maryland bridge but will likely recommend a night guard to protect it. Other habits that increase failure risk include nail biting and chewing on pens. A significant gap between the replacement tooth and the neighboring teeth (a diastema) is a clear contraindication, and a severely resorbed jawbone ridge in the gap area makes the cosmetic result harder to achieve.
What the Procedure Looks Like
Getting a Maryland bridge typically takes two appointments. At the first visit, your dentist lightly prepares the back surfaces of the neighboring teeth. This preparation is minimal compared to a traditional bridge: small ledges, shallow grooves, and a fine finish line (fractions of a millimeter deep) are created to help the wings seat precisely and resist movement. In some cases, almost no tooth preparation is needed at all. An impression or digital scan is taken and sent to a dental lab, where the bridge is custom-fabricated.
At the second appointment, the bridge is bonded into place. The enamel surfaces are etched with a mild acid to create a microscopically rough texture that the resin cement can grip. Keeping the area completely dry and free of saliva during bonding is critical. If saliva contaminates the etched enamel, it needs to be re-etched. The resin cement is applied, the bridge is pressed into position, and excess cement is carefully removed before it hardens. The whole bonding process is straightforward but demands precision.
How Long They Last
Longevity depends heavily on the material and design. An integrative review published in the European Journal of Dentistry estimated 5-year survival rates of about 86% for metal-framed versions and 88% for zirconia versions. Glass-ceramic Maryland bridges performed even better, reaching 100% at five years in the studies reviewed, though the data sets for these were smaller.
One of the most striking findings involves the number of wings. Designs with a single wing (cantilevered from one tooth) actually outperformed two-wing designs, with a 5-year success rate of 95.4% compared to 85.2% for two-wing versions. This may seem counterintuitive, but a single-wing design allows each tooth to flex naturally under biting forces instead of locking two teeth together in a way that concentrates stress on the bond. Research by Matthias Kern reported a 10-year survival rate of 94.4% for single-wing ceramic bridges, versus just 67.3% for two-wing versions.
The most common reason these bridges fail is debonding: the wing comes unstuck from the tooth. In long-term studies of metal-framed bridges, debonding was the only cause of failure observed. The good news is that a debonded Maryland bridge can often be cleaned, re-etched, and rebonded without needing a completely new restoration.
Advantages Over Other Options
The biggest selling point is how little tooth structure you sacrifice. A traditional bridge requires removing enamel and dentin from the neighboring teeth on all sides to fit crowns, which permanently alters healthy teeth. A Maryland bridge leaves the front and biting surfaces of those teeth untouched.
Compared to a removable partial denture (a “flipper”), a Maryland bridge is fixed in place, more comfortable, and far more natural-looking. Removable partials can feel bulky, and patients often dislike taking them in and out. They can also irritate the gum tissue over time if oral hygiene slips.
The procedure is also less invasive and less expensive than a dental implant, which requires surgery to place a titanium post in the jawbone followed by months of healing. For patients who aren’t candidates for implants, whether due to age, bone loss, medical conditions, or personal preference, a Maryland bridge offers a practical middle ground.
The Tradeoffs
Maryland bridges are best suited for front teeth, where biting forces are lighter. They’re rarely used on back teeth (molars and premolars) because the chewing forces in that area are too great for the adhesive bond to handle reliably. They’re also limited to replacing one tooth, or occasionally two, rather than spanning a larger gap.
The bond, while strong, isn’t as robust as a crown cemented over a fully prepared tooth. You’ll want to avoid biting directly into hard foods like apples or crusty bread with the bridge. And while debonding is usually fixable, it can happen at inconvenient times.
Caring for a Maryland Bridge
Daily care is similar to caring for natural teeth, with a few additions. Brush after meals, paying attention to the surfaces and sides of the bridge. The area underneath the replacement tooth needs special attention because food and bacteria can accumulate there. Use a floss threader to slide floss under the bridge and clean beneath the pontic and along the gumline. Interdental brushes are helpful for cleaning larger spaces. Some people find that thicker specialty floss designed for bridges works better than standard floss for reaching under the pontic.
Regular dental checkups allow your dentist to monitor the bond integrity and catch early signs of debonding before the bridge comes loose unexpectedly. If you notice the bridge feels slightly loose or shifts when you press on it with your tongue, schedule an appointment promptly so it can be rebonded before the exposed tooth surfaces develop decay.