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Information × Registration Number 2120U006507, Article popup.category Стаття Title popup.author popup.publication 01-01-2020 popup.source_user Сумський державний університет popup.source https://essuir.sumdu.edu.ua/handle/123456789/81908 popup.publisher Medpress Description The aim of the study was to identify the consequences of the use of fixed otrhodontic appliances (FOAs) on the morphological state of the tissues of the lower wall of the maxillary sinus, depending on the duration of their use.The study involved 115 male and female patients aged 18 to 25 years. All patients were divided into 2 research groups depending on the period of wearing brace systems. The control group consisted of patients who did not require orthodontic treatment orthodontic appliances. The density and thickness of the lower wall of the maxillary sinus were calculated in all groups. popup.nrat_date 2025-05-12 Close