Tooth Survival After Root Canal Varies Widely Across U.S. Regions

Tooth longevity can range from nine to 20 years after a root canal procedure, depending in part on where one lives, a new study has found.

The study is the first of its kind to include community dental clinics, where most Americans receive their dental care, and not only large healthcare systems or among the insured, the authors said.

Overall, a tooth will survive about 11 years post procedure with added restorative treatments such as a crown, the authors found. But a tooth can last 20 years if the patient has both a subsequent filling and crown. In contrast, tooth survival drops to 6.5 years with no such support, investigators from Regenstrief Institute and Indiana University School of Dentistry reported.

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