Micro-computed tomographic evaluation of canal retreatments performed by undergraduate students using different techniques

Restorative Dentistry & Endodontics
E J N L SilvaEdson Jorge Lima Moreira

Abstract

This study evaluated the amount of remaining root canal filling materials after retreatment procedures performed by undergraduate students using manual, rotary, and reciprocating techniques through micro-computed tomographic analysis. The incidence of instrument fracture and the instrumentation time were also evaluated. Thirty maxillary single rooted teeth were prepared with Reciproc R25 files and filled with gutta-percha and AH Plus sealer by the continuous wave of condensation technique. Then, the specimens were assigned to 3 groups (n= 10), according to the retreatment technique used: manual, rotary, and reciprocating groups, which used K-file, Mtwo retreatment file, and Reciproc file, respectively. Retreatments were performed by undergraduate students. The sample was scanned after root canal filling and retreatment procedures, and the images of the canals were examined to quantify the amount of remaining filling material. The incidence of instrument fracture and the instrumentation time were recorded. Remaining filling material was observed in all specimens regardless of the technique used. The mean volume of remaining material was significantly lower in the Reciproc group than in the manual K-file and Mtwo retreatment grou...Continue Reading

References

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Citations

Jan 22, 2019·International Endodontic Journal·G De-DeusE J N L Silva
Mar 18, 2021·Australian Endodontic Journal : the Journal of the Australian Society of Endodontology Inc·Emmanuel J N L SilvaRicardo T Lopes
Oct 22, 2021·International Endodontic Journal·Mahdi A AjinaBun San Chong

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Software Mentioned

NRecon
CTAn
SPSS
AxioVision
Reciproc

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