Effect of file count on MB2 canal access and post-treatment pain
Part of Pain clinical trials.
This trial tests whether using different numbers of rotary files affects the ability to find and clean a small extra canal (MB2) in upper first molars and how much pain patients feel afterward. It may help dentists choose a better treatment approach.
Summary written for real people, not researchers, by Clin2.
Who can take part
- You are between 20 and 65 years old and generally healthy.
- You need a first-time root canal on an upper first molar (not a re-treatment).
- The tooth has been diagnosed with an infection in the nerve (pulp necrosis) and a small pocket of infection around the root tip (asymptomatic apical periodontitis).
- The tooth has a second small canal on the cheek side (MB2), as seen on X-rays.
- You have little or no pain before the procedure.
- Any infection pocket around the root tip is smaller than 5 mm.
- You are not pregnant or breastfeeding, and have not taken narcotics, antibiotics, sedatives, or antidepressants in the past week.
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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