Research Information System
Thesis Type: Doctorate
Institution Of The Thesis: Gazi University, Turkey
Approval Date: 2015
Thesis Language: Turkish
Student: Oğuzhan Demirel
Supervisor: CEMİLE ÖZLEM ÜÇOK
Abstract:Dental implants are recently frequently used to supply aesthetics and function for patients who lost their teeth because of various reasons but inadequate bone height makes sinus augmentation procedure necessary before implant procedure. Pathologies that are resident in the sinuses before sinus augmentation procedure may lead to acute sinusitis and failure of augmentation or implant procedure. Osteomeatal complex is a comman dreinage pathway for frontal, maxillary and anterior ethmoid air cells. Recent studies have pointed out the importance of this area and have shown that obstruction of this area have an important role in the development of sinus diseases. In this study our purpose is to define if there is a relationship between maxillary posterior crest height and chronic sinus pathologies, to research the effect of osteomeatal complex variations in chronic maxillary sinus pathologies and to compare panoramic radiography and cone beam computed tomography in the evaluation of these pathologies. For this study, cone beam computed tomography scans of 200 patients whose maxillary posterior teeth were lost was investigated retrospectively. Residual ridge heights, existence of pathologies in the paranasal sinuses and anomalies of the osteomeatal region were recorded. Also, panoramic radiographs of the patients were examined by two seperate observers and capability of this techique on diagnosis of these lesions was evaluated. Pathologies were evident in 243 (%60,8) of the investigated 400 sinuses. There was a relationship between decreased ridge height and the lesion frequency in three areas except right premolar area. No statistically significant relationship was found between osteomeatal complex anomalies and sinus diseases. Panoramic radiography was % 57,1 sensitive, % 62 specific and % 60,2 valid technique in the right area. For the left area this technique was % 63,5 sensitive, % 68,6 specific and % 65,7 valid. In conclusion, there is a need for prospective studies to define the effect of decreased ridge height on sinus pathologies. Studies including the dimensions of the anomaly will determine the influence of osteomeatal complex anomalies on sinus pathologies. Further researchs with standardized panoramic radiographs are required to determine the capability of the panoramic radiographs in the diagnosis of maxillary sinus diseases