Residual thickness of root in first maxillary premolars with post space preparation.

@article{Raiden1999ResidualTO,
  title={Residual thickness of root in first maxillary premolars with post space preparation.},
  author={G. Raiden and L. Costa and S. Koss and J. L. Hern{\'a}ndez and V. Ace{\~n}olaza},
  journal={Journal of endodontics},
  year={1999},
  volume={25 7},
  pages={
          502-5
        }
}
It has been suggested that, to ensure tooth strength, a minimum of 1 mm of root wall thickness should be left after post preparations. The purpose of this study was to determine the instrument diameter that will not affect this measurement in maxillary first premolars. Post preparations were made in 106 teeth with one and two root canals at a working depth equal to the anatomical crown length, with 0.70, 0.90, 1.10, 1.30, 1.50, and 1.70 mm diameter instruments. Sections were cut perpendicular… Expand
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