Oral anomalies and dental treatment in a patient with cleidocranial dysplasia (referred to the dental clinic at the age of 40 years) are presented. Five supernumerary teeth were found in the patient: three in the maxilla in the area of molars and two in the mandibula in the area of premolars. Therapy included surgical exposure of impacted teeth in combination with removal of supernumerary teeth.
New records of Cercopagis pengoi (Cladocera, Crustacea) are reported for the first time from the central and western part of the Polish zone of the Baltic Sea.
There are about 30 lakes located on the Polish coast. They vary in terms of use. They are used for many purposes: energetic, fisheries, economic, educational, as receiver surpluses water from the polders, as receiver of social welfare pollutants. Also, some of them are good place for development of specific plant and animal ecosystems. Most of these lakes have very high potential for recreation. Evidence of this include conducting annual sports competitions, setting bike paths around the lakes, creating a pedestrian educational paths, development of technical and social infrastructure.