Comparative evaluation of root dentin thickness following hand and rotary instrumentation of primary molar root canals using cone-beam computed tomography - an invitro study
Rincy M Thomas, Rashmi Nayak, Medhini Madi, Ravindranath Vineetha · 2026
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Description
Rincy M. Thomas and three colleagues ask whether motor-driven files for children's root canals shave away more tooth wall than careful hand filing. What dentin remains after cleaning decides how strong the treated baby molar stays. Their 2026 laboratory study took 51 extracted human primary molars and scanned them with cone-beam CT before and after treatment. The front-root canals were split into three groups of seventeen: hand K-files, or one of two rotary systems built for children, Kedo SG Blue and Kedo S Square. Wall thickness was compared at three set levels.
After cleaning, the leftover dentin thickness did not differ significantly between the three systems at any level. Both rotary systems matched the hand files for conserving tooth structure while shaping the canal. The authors conclude the rotary files are a safe, comparable substitute in these canals, offering speed without extra thinning, in extracted teeth.
Catalog record
| CREATOR | Rincy M Thomas, Rashmi Nayak, Medhini Madi, Ravindranath Vineetha |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 36571 |
| LICENSE | https://creativecommons.org/licenses/by/4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |