When a Bridge Keeps Coming Off, Re-cementing It Is Not Enough

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A patient came in with a bridge supported by three teeth. They said the bridge had been re-cemented every so often, but it kept coming off, and they wanted to know whether there was any way to stop this from happening again.

First, I examined the bridge itself. Inside one of the crowns, part of the tooth structure had remained; the tooth had probably been damaged by caries and a piece of it had broken away. In the other two crowns, the cement was not evenly distributed either. Even before seeing the abutment teeth, these findings raised the possibility of problems beyond a simple debonding of the bridge.

Next, I examined the patient's mouth. The examination confirmed what the bridge had already suggested: there were multiple problems, and at that stage it was not possible to say with confidence whether the abutment teeth could be kept.

I requested a periapical (PA) radiograph of each tooth so that the condition and prognosis of each one could be determined separately. Once the prognosis of the teeth is clear, I can decide whether a proper reconstruction of the bridge is possible or whether treatment should move toward replacing the teeth that cannot be saved with implants.

Repeated debonding of a bridge may not be just a cementation problem; sometimes, before any treatment decision, we need to assess the condition of the abutment teeth carefully.

This page is intended for educational use by dentists and dental students.