Since many years ago are known curative effects of propolis on different lesions due, mainly, to more than 30 biologically active elements isolated from it. It is a wordly accepted opinion that propolis is one of the most useful substances elaborated by bees. Despite it, its use in our country is relatively recent. Several investigators, specially in Matanzas, study curative effects of propolis in the field of human and animal medicine. In other countries it has been used in stomalogy, but we have no knowledge about its therapeutical effects in the periodontal disease or its effectiveness in oral ulcers. Therefore, a therapeutical form has been elaborated, which is provisionally called Propolan, for the treatment of two entities: chronic gingivitis and stomatitis of different etiology. The clinical cases supporting effectiveness found with the treatment applied in our setting are presented.