Root substance removal by scaling and root planing.

@article{Zappa1991RootSR,
  title={Root substance removal by scaling and root planing.},
  author={U E Zappa and B Smith and C Simona and H J Graf and Douglas L. Case and Woo-seok Kim},
  journal={Journal of periodontology},
  year={1991},
  volume={62 12},
  pages={750-4}
}
The amount of root substance removed by scaling and root planing is largely unknown. The present study evaluated in vitro the root substance loss caused by a defined number of working strokes at known forces. Forty extracted teeth with loss of connective tissue attachment into the middle third of the roots were washed and embedded in plaster, leaving one entire corono-apical tooth aspect exposed. The teeth were reproducibly repositioned in a bench-vise, where a profilometer repeatedly measured… CONTINUE READING

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