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Teeth survive about 11 years after a root canal, according to new research from Regenstrief Institute and Indiana University School of Dentistry. The groundbreaking study is the first to analyze records from community dental practices, where most Americans receive dental care. The first author is Thankam Thyvalikakath, DMD, MDS, PhD, director of the Regenstrief-IU School of Dentistry dental informatics program. “This information can be used to inform dental practice, and help patients and dentists make better care decisions.” Root canals are an important treatment to maintain natural teeth affected by disease. However, over time, the treated tooth eventually becomes brittle and dies. Understanding the outcomes of the procedure is essential to improving dental treatments. For this study, the research team gathered deidentified electronic dental records from the National Dental Practice-Based Research Network, consisting of 99 small group and solo dentistry practices from around the country. The data covered more than 46,000 patients who received root canals.Breaking down the root canal data Data analysis revealed that the median survival time of a tooth after a root canal is 11.1 years. However, several factors can impact that, including follow-up treatments. Teeth that receive a root canal, and a subsequent filling and crown last about 20 years. Teeth that receive either a filling or a crown after a root canal last around 11 years. Teeth that receive no restorative work after a root canal only last about 6.5 years. There were also wide disparities in longevity among geographic regionsNortheast -- 20.5 years Midwest – 11.2 years Southwest – 11.2 years South Atlantic – 9.1 years South Central – 9.0 years Western – 8.7 years Insurance status also played a significant role in tooth survival time. ... See MoreSee Less

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