Sažetak The author mentions his already known methods of operating hypertrophic gingivae of the alveolar ridge. Using the »open« method he solves first the complete hypertrophy, which can be lifted from their basis in an even line and then he solves the other part of hypertrophic tissue, which can not be formed in an even line and is localised in the fornix where the operation initiates. Using the »closed« method he solves the hypertrophic part which can be lifted in a straight line from their basis and the parts of hypertrophic mucosa which can not be prepared in a straight line and is localised in the gingiva propria, where the operation starts. For hypertrophy localised in the fornix or gingiva propria where it is impossible to get an even surface the author employes a combined open and closed method. It remains to be solved the hypertrophic mucosa localised between the fornix and gingiva propria where it is not possible to achieve an even surface. This problem the author has solved in replanting the hypertrophic mucosa. He lifts the hypertrophic mucosa from their basis using the closed or open method and cuts away parts of mucosa which can not be prepared in an even surface. Clippig this part of muccsae an even surface is achieved and replanted. In this way the author has rounded up his methods of oparations of hypertrophic mucosa and is able to solve all variables of hypertrophy in the ora! cavity. It is stressed that with one surgical intervention the atrophy of the alveolar ridge and the hypertrophy of mucosa is solved and a very suitable alveolar ridge is thus achieved for making a prosthesis; in the rule the conditions are even better than in a normal ridge.