The article is devoted to changes in the enzymatic part of the antioxidant system of the rat periodontium. Investigation of superoxidedismutase, catalase, glutathioneperoxidase and glutathionereductase was performed in the rat gingiva. The performed investigation is resulted in new data, which testify about exhaustion in enzymatic antioxidant system in animals that received irrational nutrition. It could lead to consequent injury of periodontium under the action of oxidative stress.
