Planning of sinus lift on patients with maxillary mucous retention cysts of various sizes on an outpatient appointment

Abstract

According to the literature, maxillary mucous retention cysts are a common finding in screening studies. They are incidentally found in 12.4—22% of people with CT examinations of the maxillary and are often asymptomatic. There is still no consensus on the symptomatology of maxillary mucous retention cysts. Objectives — identification of maxillary mucous retention cysts in patients at the initial visit: 1) study the clinical manifestations and radiological features of the maxillary mucous retention cysts depending on the size of the cysts; 2) identify the symptoms of retention cysts depending on the size of the cysts; 3) analyze the size of the cysts, age and gender prevalence, multiplicity and loneliness of retention cysts; 4) study the likelihood of recurrence of retention cysts after their removal; 5) study the effect of cysts on the sinus lift. Materials and methods. Clinical and screening studies were performed in 940 patients who came to the clinic in 2019. Thus, 1880 maxilla sinuses were examined. Patients underwent X-ray examinations and anamnesis. Results and conclusions. The results of the study allow us to conclude that there is no significant symptoms in the presence of maxillary mucous retention cysts. Retention cysts, as a rule, are an accidental finding on CBCT when examining the dento-maxillary system and planning a sinus lift. It is very important to take anamnesis for the prognosis of the postoperative course after the sinus lift. In cases of small cysts (up to 1/3 of the size of the maxilla sinus) detachment and elevation of the Schneiderian membrane together with the retention cyst is possible. There is no need to remove small retention cysts, since the contents of the cyst are sterile. The presence of a retention cyst does not affect the postoperative course and the results of the sinus lift. In cases of large cysts (from 1/2 the volume of the maxilla sinus and more), the operating surgeon must decide to remove the cyst during the operation in order to prevent obstruction of the anastomosis after sinus lift.