Background: Periodontal disease is an inflammatory disease that induces regional inflammation, alveolar bone loss, tooth movability, and exfoliation. Considering that the maxillary molars are in close relation to the maxillary sinus floor, infection in the maxillary molars can diffuse into the maxillary sinuses.
Study objective: This research aimed to study the correlation between root projection of upper molars in periodontitis patients and the presence of mucosal cysts within the antrum as a possible parameter influencing their appearance within the sinus using CBCT imaging.
Materials and Methods: CBCT scans were checked for the presence of root projection into the antrum and the presence of antral cysts.
Results: A non-significant statistical relation between root projection into the antrum and the appearance of antral cysts (FEp=0.667) was detected.
Conclusion: These results indicate that the appearance of mucosal cysts within the maxillary sinus is not affected by the presence of the root projection of molar teeth suffering from periodontitis into the sinus.