The special features of transfer of information of the cone-beam computed tomography allows make conclusions about the character of pathological changes in maxillary sinuses only by the features of form and outlines of shadow of changed mucous tunic of sinus at its equal intensity that often leads to the incorrect interpretation of the results of research. The high sensitivity of two-dimensional ultrasonography as for thickening (sclerosis) of mucous tunic, its edema (effusion) and exudation (purulent or serous) allows the more widen use of this method in addition to the cone-beam tomography at examination of maxillary sinuses. The other important moment is an absence of harmful influence of ultrasound on organism that makes it ideal for assessment of the dynamics of clinical course and allows prescribe it for pregnant and children. The two-dimensional ultrasound examination of 86 patients with stomatogenic maxillary sinusitis (iatrogenic – 79,1 % odontogenic – 20,9 % forms) was carried out using ultrasound diagnostic apparatus АCUSON X 500, ATSmod.539 (SIEMENS, USA) in В-mode by the method of V.V. Shilenkova. In the result of research was found out that sonographic picture of the maxillary sinuses at stomatogenic maxillary sinusitis depends on etio-pathogenetic form of disease. For iatrogenic form of maxillary sinusitis of stomatogenic origin are typical the ultrasound signs of chronic inflammation with many inflammatory inclusions in sinus, sclerosis of mucous tunic and serous effusion. By frequency prevailed: hyperechogenicity of membrane (30,8 %), its heterogenous echostructure (52,9 %), hyperechogenic character of content (39,7 %), arched outline of the back wall (36,8 %). For odontogenic form of maxillary sinusitis of stomatogenic origin are typical the ultrasound signs of acute catarrhal inflammation with predomination of exudation in the mucous tunic and absence of contents in the lumen of sinus. By frequency prevailed: hypoechogenicity of membrane (27,8 %), its homogenous echostructure (45,6 %); acoustic shadow in sinus (72,2 %), arched outline of the back wall (27,8 %).