ASSESSMENT OF THE PH VALUE OF THE ACID-BASE BALANCE OF THE ORAL FLUID IN PATIENTS BEFORE THE APPLICATION OF ORTHODONTIC DEVICES, AFTER THREE AND SIX MONTHS OF TREATMENT WITH REMOVABLE AND NON-REMOVABLE EQUIPMENT MADE OF DIFFERENT MATERIALS ArticleKosyreva T.F., Almasri R., Gorshunova N.V., Voeykova O.V., Alhamzah G.Стоматология для всех. 2023. С. 4-9
