[Prognosis of periodontally reduced abutment teeth under removable dentures].

The extraction rate was studied in a group of 151 patients treated for periodontal and prosthodontic reasons. 29 of 588 abutments had to be extracted due to periodontal problems within a period of 6 years after prosthodontic treatment. The initial findings of the extracted teeth are correlated with the initial findings of all abutments. It can be shown that periodontally reduced teeth involve a higher risk of extraction; nevertheless, in the majority of the cases, they could be successfully used as abutments.