A long-term survey of tooth loss in 600 treated periodontal patients.

@article{Hirschfeld1978ALS,
  title={A long-term survey of tooth loss in 600 treated periodontal patients.},
  author={L. Hirschfeld and B. Wasserman},
  journal={Journal of periodontology},
  year={1978},
  volume={49 5},
  pages={
          225-37
        }
}
  • L. Hirschfeld, B. Wasserman
  • Published 1978
  • Medicine
  • Journal of periodontology
  • 1. Six hundred patients in a private periodontal practice were reexamined an average of 22 years after their active treatment and the patterns of tooth loss were observed. 2. [...] Key Result During the post-treatment period, 300 patients had lost no teeth from periodontal disease, 199 had lost one to three teeth, 76 had lost 4 to 9 teeth and 25 had lost 10 to 23 teeth. 3. Of 2,139 teeth that originally had been considered of questionable prognosis, 666 were lost. Of these, 394 were lost by one sixth of the patients and only 272 by the other five-sixths. 4.Expand Abstract

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