TY CONF TI LIQUID CRYSTAL STATUS OF MIXED SALIVA OF PATIENTS ON THE BACKGROUND OF POST-RADIATION XEROSTOMIA AND PERIODONTITIS KW mixed saliva KW liquid crystal status KW post-radiation xerostomia KW periodontitis JO Materials of the International Congress "Dentistry of the Great Urals". December 4-6, 2019 AU Elovicova, T.M. AU Karaseva, V.V. AU Koshchev, A.S. AU Prihodkin, A.S. PY 2024 PB TIRAZH Publishing House