EFFICACY OF VACUUM-GRADIENT THERAPY IN REDUCING ORTHODONTIC TREATMENT TIME [EFFEKT USKORENIYA ORTODONTICHESKOI KORREKTSII ZUBOCHELYUSTNYKH ANOMALII VAKUUM-GRADIENTNOI TERAPIEI] СтатьяKosyreva T.F., Biruykov A.S., Voeykova O.V., Davidian O.M.Стоматология. Том 99. 2020. С. 69-73