POSTERİOR MAKSİLLER BÖLGEDE PERİAPİKAL LEZYON VE PERİODONTAL DURUMUN SİNÜS MEMBRANI ÜZERİNE ETKİSİNİN İNCELENMESİ
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Aim: The aim of this study; To examine the effect of periapical lesion (PAL) and periodontal condition on sinus membrane thickening and to determine the amount and morphology of mucosal thickening. Materials and methods: This study was carried out retrospectively on CBCT data obtained from patients who applied to Hacettepe University Faculty of Dentistry Department of Periodontology with different indications. This study consists of 2000 maxillary arch CBCT images of 1000 patients. The examined CBCT images were chosen as the sinus floor can be observed. Right and left posterior maxilla regions (1.premolar, 2.premolar, 1.molar and 2.molar) were examined on CBCT images. Mucosal thickening was considered as thickening when it was more than 1 mm. Right and left sinus membrane morphology, dental status classification for right and left 1st premolar, 2nd premolar, 1st molar and 2nd molar tooth regions, lesion size classification for teeth with dental status, PAL sinus relationship of tooth regions with dental status were examined. . Sinus membrane thickening was recorded in mm for the right and left 1st premolar, 2nd premolar, 1st molar, and 2nd molar tooth regions. While creating the research report, 95% confidence interval was used for the significance level. Results: The mean maxillary sinus mucosa thickening was found to be 3.09 ± 0.06mm. Flat type thickening among the sinus mucosa thickening morphologies is the most common thickening type with a rate of 42%. It was determined that the sinus membrane thickening showed a statistically significant difference according to the dental status (p<.05). It is seen that sinus membrane thickening in toothed areas where PAL and periodontal alveolar bone loss (PABL) coexist is higher than in teeth with other dental status. In addition, it was observed that sinus membrane thickening increased in teeth with only PABL without PAL. It was determined that the sinus membrane thickening showed a statistically significant difference according to the lesion size (p<.05). It is seen that sinus membrane thickening in teeth with lesions of “2.1-4 mm”, “4.1-8 mm” and “8.1 mm ↑” is higher than in teeth with other lesion sizes. It was determined that the sinus membrane thickening showed a statistically significant difference according to the lesion-sinus relationship (p<.05). As the distance between the lesion and the sinus floor decreases, the thickening of the sinus membrane increases. It was determined that the sinus membrane morphology showed a statistically significant difference according to the directions (p<.05). Considering the average values, it is seen that the thickening on the right side (X ̅=3.16) is more than the teeth on the left (X ̅=3.06). Conclusions: More sinus membrane thickening was measured in toothed areas where periapical lesion and periodontal alveolar bone loss were seen together.