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    In-vitro Diagnosis of Approximal Caries in Teeth Periapical Radiography with Different Exposure Parameters
    (Pera Yayincilik Hizmetleri, 2023) Altun, Oguzhan; Ozen, Duygu Celik; Dedeoglu, Numan; Duman, Suayip Burak; Eser, Gozde; Topaloglu, Edanur; Ozemre, Begum
    Objective: The aim of this study was to evaluate periapical radiographs of enamel caries, dentin caries, and deep caries with exposed pulp and intact teeth obtained in vitro using photo-stimulated phosphor plates (PSP) under different exposure parameters. Methods: 3 non-carious extracted molars were selected. The obtained molars were embedded in the wax created from pink wax by ensuring approximal contact and a base was created. 14 different imaging protocols were used with 60 kVp, 4 mA 0.02-0.1 second and 70 kVp 7 mA, 0.25-1.25 second exposure parameters. Intact teeth were imaged with these various imaging protocols. Artificial cavities were then created for enamel caries, dentin caries and deep caries with exposed pulp and imaged according to the same protocols. The images were evaluated by 3 clinicians who were blind to the exposure protocol and caries status. Inter-observer agreement with actual situations was examined with Kappa statistics. Results: In the low-dose group, the kappa values of observer 1, observer 2, and observer 3 were 0.905, 0.952, 0.952, respectively. The kappa values of observer 1, observer 2, and observer 3 in the ultralow-dose group were 0.833, 1, 1, and the kappa values of observer 1, observer 2, and observer 3 in the high-dose group were 1, 1, 0.833, respectively. The results obtained in all groups showed a statistically significant-excellent agreement (p<0.001). Conclusion: Approximal caries can be diagnosed with intraoral radiography obtained with low radiation doses with PSP in dentistry. Thus, patients could be exposed to less ionizing radiation.
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    Investigation of the Effect of Unilateral Maxillary Sinus Hypoplasia on Temporomandibular Joint Morphology
    (Pera Yayincilik Hizmetleri, 2026) Ozemre, Begum; Duman, Suayip Burak; Ozen, Duygu Celik; Altun, Oguzhan
    Objective: Maxillary sinus hypoplasia is frequently discovered by accident and is typically asymptomatic. This study aims to assess how temporomandibular joint (TMJ) morphology is affected by unilateral maxillary sinus hypoplasia. Methods: For this study, cone beam computed tomography (CBCT) images in the radiology archive of the Department of Oral, Dental, and Maxillofacial Radiology, Faculty of Dentistry, & Idot;n & ouml;n & uuml; University, were retrospectively reviewed. The study included 77 patients (51 female, 26 male) aged 18-73 years with unilateral maxillary sinus hypoplasia. The patients' articular eminence angles, glenoid fossa root thickness, joint spaces, ramus lengths, condyle sizes, and condyle shapes were evaluated and compared bilaterally. Results: Condylar dimensions, joint spaces, articular eminence inclinations, glenoid fossa roof thickness, ramus length, and condyle shape did not significantly differ (p>0.05) between the hypoplastic and normal maxillary sinus sides. Conclusion: The study's findings show that maxillary sinus hypoplasia has no discernible impact on TMJ morphology; hence, this anatomical variation does not result in appreciable morphological alterations in the joint structure.