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Can a better crown design save Root-Treated teeth?

NCT ID NCT04604314

Completed Disease control Sponsor: University of Michigan Source: ClinicalTrials.gov ↗

First seen Jul 13, 2026 · Last updated Jul 14, 2026 · Updated 1 time

Summary

This trial studies how the shape of a tooth preparation affects the fit and long-term success of ceramic endocrowns—a type of crown that replaces the top of a tooth after root canal treatment. Researchers will compare different preparation designs using a high-strength ceramic material (CEREC Tessera) bonded with a special adhesive. The goal is to see which design leads to fewer failures, less staining, and better retention over five years.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance
CEREC Tessera ceramic endocrown
What this could lead to
If successful, this could help dentists choose the best preparation design for durable, long-lasting ceramic crowns on root-treated molars.
What could go wrong
This is a small, early-stage trial with only 69 participants, and results may not apply to all patients or teeth. Crowns could still fail or require replacement.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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Conditions

The condition(s) this trial relates to.

Tooth, Nonvital

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

ENDODONTICALLY TREATED TEETH

Contacts and locations

Locations

  • School os Dentistry

    Ann Arbor, Michigan, 48109, United States

More trials for these conditions

Other studies related to the condition(s) this trial covers.