Joint Institute for Nuclear Research;
Joliot-Curie 6;
Dubna;
Moscow Region;
Russian Federation 141980;
Institute of Nuclear Physics;
PAS;
E. Radzikowskiego 152;
31-342 Krakow;
Poland;
Institute of Physics;
Maria Curie-Sklodowska University;
pl. M. Curie-Skiodowskiej 1;
20-031 Lublin;
Poland;
Northern Arctic Federal University;
Severnaya Dvina Emb. 17;
Arkhangelsk;
Russian Federation 163002;
AGH University of Science and Technology;
30 Mickiewicza Ave;
90-059 Krakow;
Poland;
Institute of Electrophysics and Radiation Technologies;
NAS of Ukraine;
Chernyshevsky St. 2& Kharkiv 61002;
Ukraine;
Sandblasting; Positron; annihilation; technique; Dental; alloys; Defects; analysis; Oxides;