Objective

2

Adopt a modified double-layer microgroove basket to hold the oral root canal files for cleaning so as to improve the cleaning quality and to avoid sharp injury to the operator.

Methods

2

The cleaning quality was observed in the experimental group and the control group by randomly grouping 100 root canal files after recovery. 50 files in the experimental group were loaded and cleaned with modified double-layer microgroove baskets and 50 files in the control group were loaded and cleaned with stainless steel mesh cups.

Results

2

In the experimental group

the cleaning pass rate of root canal files was 98% and the bending rate was 0. In the control group

the cleaning pass rate of root canal files was 86% and the bending rate was 18% (

χ

2

=4.891

P

<

0.05;

χ

2

=9.890

P

<

0.05). Before the modified double-layer microgroove baskets were adopted for cleaning before loading and cleaning the root canal files

26 sharp injuries occurred in 25 medical workers in one year

with an average of 1.04±0.28. After the baskets were adopted

8 sharp injuries occurred with with an average of 0.32±0.125. There was a significant difference in the average of sharp injuries before and after using the modified microgroove basket (

Z

=‒3.211

P

<

0.01).

Conclusion

2

The modified double-layer microgroove basket for cleaning sharp instruments in the oral cavity can improve the cleaning pass rate of root canal files and effectively reduce the incidence of sharp injuries to medical personnel.