Maksiller 1. ve 2. molar dişlerin periapikal sağlığı ve maksiller sinüslerdeki mukozal kalınlaşmanın konik ışınlı bilgisayarlı tomografi ile retrospektif olarak incelenmesi


Thesis Type: Doctorate

Institution Of The Thesis: Marmara University, Faculty of Dentistry, Clinical Sciences (Faculty of Dentistry), Turkey

Approval Date: 2017

Thesis Language: Turkish

Student: MERVE ŞAKIR

Supervisor: Şebnem Erçalık Yalçınkaya

Abstract:

 It was aimed to assess the radiological characteristics of periapical lesions, periodontal and anatomic condition of maxillary posterior teeth and possible associations between the mucosal thickness (MT) of maxillary sinuses (MS) and apical periodontitis (AP), periodontal and anatomic conditions respectively in this retrospective study. Material and Method: Using cone-beam computed tomography (CBCT) images (n=50), the periapical conditions of the maxillary molars were evaluated with CBCT-PAI (Estrela et al. 2008). Anatomic asssociations with the maxillary molars and the inferior wall of MS were assessed according Kwak et al. (2004). Periodontal bone loss and MS-relation was examined according to Sheikhi et al. (2014). The possible effects of these conditions on the MT of MS were analysed. Kruskal Wallis, Mann Whitney U, Chi-Square and Relative Ratio calculation tests were used for the statiscial analysis. Results: CBCT-PAI class 4 was the most frequently encountered AP lesion. The risk of pathological changes in the MS was significantly higher in the presence of AP (p=0.0001). This risk was shown as 62.364 times greater than the risk of other MS neighbouring with healthy teeth (OR: 62.364, %95 CU:7.968-488.14). Thicker MS mucosae were detected when the molar roots with AP were closer to the MS (p=0.003). No statistically significant difference was found between the periodontal status and MS pathology. Conclusions: Maxillary sinuses were found to be affected by the endodontal health of adjacent molar teeth. It is essential that medical doctors should always consider the possible odontogenic causes whilst examing the pathological changes of the MS.