Academic Editor: Márió Gajdács
Background and aims: Considering the advantages of rotary files in
instrumenting the root canals of permanent teeth and a lack of adequate data on
the use of these systems in primary teeth, the present study aimed to evaluate
two rotary files and compare them with hand files in the cleaning efficacy of
the root canals of primary molar teeth. Materials and methods: In the
present study, three groups of teeth were prepared with Kedo-S paediatric rotary
file system, RaCe (reamer with alternating cutting edges), and hand files (n =
40). The groups were evaluated under a stereomicroscope concerning the cleaning
efficacy of the files after cleaning the teeth in the apical, middle, and coronal
thirds. The data were analyzed with SPSS 24 (IBM Corporation, USA, 2016) using
Fisher’s exact test and chi-squared test; statistical significance was set at
p