The effect of four preparation techniques on the amount of apically extruded debris.

@article{Fairbourn1987TheEO,
  title={The effect of four preparation techniques on the amount of apically extruded debris.},
  author={D. Fairbourn and G. McWalter and S. Montgomery},
  journal={Journal of endodontics},
  year={1987},
  volume={13 3},
  pages={
          102-8
        }
}
The amounts of root canal material extruded from extracted teeth using four instrumentation techniques were compared. Eighty extracted human mandibular premolars with single canals and root curvatures of 9 to 28 degrees were divided into four groups: 1, conventional filing technique; 2, cervical flaring technique; 3, ultrasonic technique; and 4, sonic technique. The teeth were opened for endodontic access and a #10 file passed 1 mm beyond the apex to ensure canal patency. All teeth were… Expand
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Apically-extruded debris using the ProTaper system.
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Apical extrusion of debris using two hand and two rotary instrumentation techniques.
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