Cone Beam CT Analysis Of The Effects Of Abnormal Nasal Structures On Maxillary Sinus Pneumatization

Objective: The maxillary sinus floor is close to the position of maxillary posterior teeth and is closely related.When excessive pneumatization of the maxillary sinus floor leads to the apex of the maxillary posterior teeth close to the maxillary sinus floor or even penetrates into the maxillary sinus,it will have a certain impact on the diagnosis,treatment and prognosis of multiple oral disciplines.There are so many factors affecting the maxillary sinus pneumatization potentially,but the exact biological mechanism and influencing factors are still unclear.In this study,we used oral cone-beam CT with the floor of the maxillary sinus as the observation interface to analyze the effects of nasal structure abnormalities,such as nasal septum deviation,concha bullosa and inferior turbinate hypertrophy on maxillary sinus’ s inferior pneumatization(MSIP).At the same time,the ostiums and the depth of the normal maxillary sinus and the maxillary sinus’ s inferior pneumatization were also measured and compared to explore the mechanism and influencing factors of maxillary sinus pneumatization.Materials and Methods: According to the selection and exclusion criteria of this experimental data,71 cases of cone-beam CT image data of 11-27 year-old patients who were treated at the Affiliated Stomatological Hospital of Nanchang University and took CBCT from November to December 2019 were collected.The eXamVisonQ software image was used to observe and analyze the prevalence of nasal septum deviation,concha bullosa,inferior turbinate hypertrophy,and maxillary sinus’ s inferior pneumatization,and also to compare the ostiums and the depth of the maxillary sinus.SPSS22.0 software is used for statistical processing of the data.Results: There was no statistical difference between nasal septum deflection,concha bullosa,and maxillary sinus’ s inferior pneumatization(P>0.05).There was a statistical difference between inferior turbinate hypertrophy and maxillary sinus’ s inferior pneumatization(P<0.05).In the normal CBCT results of the maxillary sinus,the size of the bilateral maxillary sinus ostiums was larger than that of the maxillary sinus’ s inferior pneumatization patients.But not all the differences in the bilateralmaxillary sinus ostiums were statistically significant.The depth of the bilateral maxillary sinus was also greater in patients with maxillary sinus’ s inferior pneumatization than in the normal maxillary sinus.But also,not all the differences in bilateral maxillary sinus depth were statistically significant.Conclusion: In this study,it is found that the prevalence of inferior turbinate hypertrophy and the maxillary sinus’ s inferior pneumatization is high.Patients with inferior turbinate hypertrophy are more prone to maxillary sinus’ s inferior pneumatization.Based on these findings,we recommend that dentists should pay attention to check the patient’s nasal breathing.Dentists also should pay attention to the examination and analysis of nasal septum deflection,concha bullosa,and inferior turbinate hypertrophy when analyzing thecone beam CT of patients,in order to find problems in time.……...