Corresponding Author

Ashraf Yassin Alhosainy

Article Type

Original Article


Objective: To evaluate the cleaning efficacy of XP-endo Shaper, iRaCe, and stainless-steel K-file systems in primary molars.

Materials and Methods: Forty-five extracted maxillary second primary molars were divided into three groups according to the instrumentation technique used; Group (A): stainless-steel k-files, Group (B): XP-endo Shaper file, and Group (C): iRaCe files. Instruments were used according to the manufacturer’s instructions and 1% sodium hypochlorite (NaOCl) solution was used as the irrigant. The teeth were then prepared for histological processing. Several serial transverse sections were taken from the coronal, middle, and apical levels of the root, stained with hematoxylin-eosin, and examined under light microscopy for evaluation of canal’s cleanliness.

Results: The mean percentage of debris for stainless-steel K-files, XP-endo Shaper and iRaCe files were 19.2 ± 8.22, 7.56 ± 3.16, and 8.91 ± 4.29 respectively at the coronal level (P= 0.0001). For the middle level, it was 17.24 ± 5.11, 8.16 ± 5.89, and 8.84 ± 4.69 respectively (P= 0.0009), while for the apical level, it was 13.19 ± 9.69, 5.31 ± 3.39 and 5.99 ± 4.14 respectively (P=0.018) with a statistically significant difference.

Conclusions: The XP-endo Shaper and iRaCe files were comparable to each other in their cleaning efficacy in the root canal system of primary molars; however, stainless-steel K-files left more debris at the three levels of the canals which was statistically significant.


XP-endo Shaper, Cleaning efficacy, primary molars, rotary files.