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Purpose: The purpose of the study is to evaluate the effects of osteoporosis (OP) using panoramic mandibular index (PMI) and mandibular cortical index (MCI) in panoramic radiographic and cone-beam computed tomographic (CBCT) images and to demonstrate any advantages of CBCT versus panoramic imaging in those indexes. Materials & Methods: 36 female patients (18 with osteoporosis and 18 with no systemic disease) who had panoramic radiographic and CBCT indication due to dental problems were involved in the study. PMI and MCI are evaluated on both panoramic and CBCT images. Differences between patient groups are analyzed by the Kruskal Wallis test, and differences between imaging techniques are analyzed by impaired t-tests ignoring patient groups in confidence interval 95%. Results: In CBCT images, PMIs were significantly lower in patients with osteoporosis than in the control group (p=0.004), and there was no significant difference between the patient and control group in panoramic images (p=0.085). In both imaging techniques, MCIs were significantly higher in the osteoporosis group than in the control group (p=0.000). CBCT showed a significant advantage on PMI to panoramic images (p=0.05). Conclusion: Systemic diseases affect bone tissue in different levels, and to evaluate these effects, cortical and trabecular bone parts must be investigated separately, and findings must be combined with patients’ clinical symptoms. CBCT has advantages in PMI evaluations to panoramic radiography.

GirişMandibular koronoid hiperplazisi (MKH); ilk defa 1853 yılında Langenbeck tarafından tanımlanmıştır (1).Genellikle semptomsuz ilerleyen, radyografilerde tesadüfen karşılaşılan; bazen de laterale doğru büyüdüğünde zigomatik ark veya zigomatik kemikle temas ederek ağız açıklığını ÖZET Amaç: Bu retrospektif çalışmanın amacı, kliniğimizde farklı sebeplerle konik ışınlı bilgisayarlı tomografi (KIBT) görüntüleri alınmış unilateral mandibular koronoid hiperplazisi (MKH) görülen hastalarda, hiperplazi görülen ve görülmeyen taraflardaki mandibular koronoid ve kondilin vertikal uzunluklarının değerlendirilmesidir. Gereç ve Yöntem:Farklı sebeplerle kliniğimizde KIBT görüntüleri alınmış 502 hastanın 32'sinde izlenen unilateral MKH incelendi. Her hasta için hiperplazi gözlenen ve gözlenmeyen taraflardaki koronoid uzunluğu, kondil uzunluğu ve bunların birbirine olan oranı istatistiksel olarak değerlendirildi. Bulgular:Ölçümler sonucunda unilateral MKH görülen tarafta koronoid çıkıntılarının ortalaması 15,72 mm (± 0,40), kondil boyu ortalaması ise 13,23 mm (± 0,51) ; ortalama koronoid/kondil boyu oranı 1,24 olarak elde edildi. Normal tarafta ise koronoid çıkıntılarının ortalaması 13,75 mm (± 0,33), kondil boyu ortalaması 15,32 mm (± 0,39); koronoid/kondil boyu oranı ise 0,90 olarak elde edildi. Yapılan t testine göre p=0,023 (p<0,05) ile MKH görülen taraf ve görülmeyen taraftaki ortalama koronoid/kondil boyu oranları arasındaki fark anlamlı olarak bulundu.Sonuç: MKH sıklıkla asemptomatikken, TME hastalıklarını taklit eden semptomlara ve yüz ağrılarına da sebep olabilir. Panoramik radyografilerde sıklıkla tüber maksillarise veya zigomatik arka süperpoze olabilen koronoid çıkıntı; konik ışınlı bilgisayarlı tomografide net bir şekilde incelenebilmektedir. Anahtar Kelimeler: Koronoid çıkıntı, koronoid hiperplazisi, KIBT ABSTRACTObjective: Aim of this retrospective study is to evaluate the vertical measurements statistically of the coronoid and condylar processes in hyperplasia seen and unseen sides in unilateral hyperplasia of mandibular coronoid process (HMCP) cases whose cone beam computed tomography (CBCT) images are taken for different reasons. Material and Method:Unilateral HMCP in 32 of 502 patients whose CBCT images were taken for different reasons is analyzed. In both hyperplasia forseen and unseen sides of each patient; coronoid length, condyl length and the ratio between them statistically are evaluated.Findings: According to measurements, in hyperplasia seen sides of the patients; avarage length of coronoid process was 15,72 mm (± 0,40) , avarage length of the condylar process was 13,23 mm (± 0,51) and the ratio between them was calculated 1,24. Avarage length of coronoid process was 13,75 mm (± 0,33), avarage length of the condylar process was 15,32 mm (± 0,39) and coronoid/condylar length ratio was 0,90 in the normal side. According to results of t test; with the value of p= 0,023 (p<0,05) the difference between coronoid/condylar process ratios was significant. Conclusion:While HMCP cases are mostly asymptomatic, ...