Objective: To investigate the relation between alkaline phosphatase (ALP) in gingival crevicular fluid (GCF) and prognosis.
Methods: We measured the alkaline phosphatase in gingival crevicular fluid among 56 cases of implant tooth which included 2 failed cases, 5 cases in bad oral hygiene and with gingivitis, compared with the normal group consisted of 10 healthy persons.
Results: The difference of ALP level between normal group and success implant group is not significant, but between normal group and success with gingivitis group is significant(P < 0.05). The ALP level of 2 failed cases are highest (because of few failed cases, no statistics was done).
Conclusions: The ALP level in GCF is supposed to be an important index in evaluating the result of the implant.