Comparing tooth pain after root canal retreatment with different tools
Part of Mouth & dental clinical trials.
This study tests whether using different electronic devices to measure tooth root length can reduce pain after a second root canal procedure. It is for people who had a root canal at least 4 years ago and now have a painless infection at the tip of the root.
Summary written for real people, not researchers, by Clin2.
Who can take part
- You are between 18 and 60 years old and in good general health (ASA I or II).
- You have a single-rooted tooth that had a root canal at least 4 years ago.
- The previous root canal filling stops 2-3 mm short of the tooth's tip.
- You have a silent infection at the root tip (asymptomatic apical periodontitis) with a certain x-ray score (PAI 2-4).
- The root canal of your tooth is not severely curved (less than 30 degrees).
- You have not taken painkillers, antibiotics, or steroids in the last 2 weeks.
- You are not pregnant or breastfeeding, and you have no serious medical conditions like cancer or advanced diabetes.
Quick eligibility check
Answer a few plain-language questions, based on this study's own requirements, to get a preliminary sense of fit.
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