A dental bridge can be a long-lasting, beautiful solution for replacing missing teeth. With good care, it can last well over a decade—sometimes even 15 years or more. However, like any dental restoration, a bridge isn’t indestructible. Knowing what can cause a dental bridge to fail will help you take the right steps to protect your investment and your smile.
Poor Oral Hygiene
One of the leading causes of dental bridge failure is poor oral hygiene. While a bridge itself can’t decay, the natural teeth supporting it—called abutment teeth—certainly can. If plaque and bacteria accumulate around the edges of the crowns, they can cause cavities or gum disease, both of which can weaken the foundation of your bridge.
To keep your bridge healthy, brush twice a day, floss daily, and use special tools like floss threaders or interdental brushes to clean underneath the bridge. Regular dental checkups and professional cleanings are also key for maintaining the supporting teeth and gums.
Gum Disease
Even the strongest bridge won’t last if gum disease goes untreated. Periodontal disease affects the gums and bone that support your natural teeth. As these tissues weaken, the abutment teeth may loosen, causing the bridge to shift or fail.
If you notice bleeding gums, swelling, or persistent bad breath, schedule an appointment with your dentist. Early gum disease is manageable, but advanced cases can cause irreversible damage to the bone structure that holds your bridge in place.
Decay of Supporting Teeth
Decay beneath or around the crowns anchoring your bridge can also lead to failure. Once decay reaches the tooth structure underneath, it can compromise the stability of the restoration. In severe cases, the affected tooth may no longer be able to support the bridge and may need to be replaced entirely.
Maintaining excellent oral hygiene and using fluoride toothpaste can help protect these crucial anchor teeth from decay.
Poor Fit or Faulty Design
A bridge that doesn’t fit properly can create uneven pressure when you bite or chew. This can cause discomfort, chipping, or even fractures in the bridge over time. Faulty design or improper cementing can also leave small gaps where bacteria can accumulate, leading to decay and loosening of the bridge.
If you ever feel that your bridge doesn’t sit right or has started to move, don’t try to adjust it yourself. Instead, schedule a visit with your dentist so they can evaluate and correct the issue before it worsens.
Teeth Grinding and Excessive Force
Bruxism—habitual teeth grinding or clenching—puts extra strain on your bridge and supporting teeth. Over time, this pressure can cause the bridge to crack or loosen. If you grind your teeth, wearing a nightguard can help protect your restoration and prevent future damage. Similarly, avoid using your bridge to bite down on hard objects like ice, nuts, or pens.
How to Prevent Bridge Failure
The best way to keep your dental bridge strong is to combine excellent at-home care with routine dental visits. Follow your dentist’s instructions for cleaning around the bridge, and don’t ignore signs of discomfort or looseness. With proper maintenance, your bridge can remain a durable, functional part of your smile for many years.
A healthy smile starts with healthy habits—and consistent care will help ensure your bridge stands the test of time.
About the Practice
Dr. Nelson Y. Howard helps patients at every stage of their restorative dentistry journey with personalized restorative care designed to promote long-term oral health and confidence. Our practice provides a range of restorative treatments, including custom-made dental bridges crafted for strength, comfort, and aesthetics.
Call us at (760) 599-6559 or request an appointment online.