Browsing by Author "Talmaç, Ayşe Gül Öner"

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Comparison of the Accuracy of Different Cone Beam Computed Tomography Systems in Measuring the Volume of External Root Resorption
(2021) Talmaç, Ayşe Gül Öner; Koç, Alaettin
Dişlerde meydana gelen kök rezorpsiyonu; fizyolojik, patolojik veya idiopatik nedenlerden kaynaklanan diş dokusundaki dentin, sement ve bazen de alveol kemik yapısında harabiyete yol açan klinik bir süreçtir. Rezorpsiyonun doğru ve erken tanısı, başarılı tedavi için kritik öneme sahiptir. Bu çalışma da üç farklı konik ışınlı bilgisayarlı tomografi cihazının farklı parametreleri kullanılarak kök rezorpsiyonunu boyutunu ölçme kabiliyetleri karşılaştırılmıştır. Çalışmada 42 adet eksternal rezorpsiyon defekti kullanılmıştır. Üç farklı konik ışınlı bilgisayarlı tomografi (KIBT) cihazında 6 farklı tarama protokolünde defektlerin hacim ölçümleri gerçekleştirilmiştir. Daha sonra bu hacim değerleri, gerçek hacim olarak kabul edilen mikro bilgisayarlı tomografi hacim değerleri ile karşılaştırılmıştır. Kıyaslama sonucunda, 6 farklı görüntüleme protokolünde hesaplanan hacimlerin gerçek hacimle arasında anlamlı fark izlenmemiştir (p≥0.05). Elde edilen sonuçlara göre, KIBT taramalarında en düşük doza karşılık gelen parametreler eksternal kök rezorpsiyonunun boyut değerlendirmesi için kullanılabilir.
Cone-Beam Computed Tomography Evaluation of Bone Height and Width in 7 Different Tooth Regions of Totally Edentulous Maxilla
(2024) Talmaç, Ayşe Gül Öner; Orhan, Zeynep Dilan; Ciğerim, Levent; Kahraman, Nazlı Hilal; Husseın, Abdalrahım; Doğru, İbrahim; Galayene, Abdurrahman
Aims: The aim of this study was to evaluate the residual alveolar bone height and bone width at different depths from the central tooth region to the second molar tooth region in maxillary totally edentulous individuals. Methods: This retrospective observational radiographic study was performed on cone beam computed tomography images of patients who presented to the department of oral and maxillofacial surgery for dental implant evaluation between January 2010 and March 2023. Horizontal measurements were taken on sagittal cross-sectional images at vertical depths of 1 mm, 3 mm, 5 mm and 7 mm from the alveolar crest. Vertical measurements were made by measuring the distance between the crest of the alveolar ridge and the base of the nose or the base of the maxillary sinus. The results were evaluated with 95% confidence interval and significance at p<0.05 level. Results: Of the 104 patients included in the study, 42 were male and 62 were female and their age ranged from 36 to 90 years with a mean age of 50.88±10.28 years. The mean change of 0.46±1.83 units in the vertical measurements on the left side compared to the right side in the lateral region was statistically significant (p<0.05). Bone height was greater in the right and left central regions than in the 2nd premolar, 1st molar and 2nd molar regions (p<0.05). Bone width was greater in the 2nd premolar, 1st molar and 2nd molar regions and on the left side at depths of 1, 3 and 5 mm (p<0.05). Conclusion: This study was the first to compare residual bone height and width at 1, 3, 5 and 7 mm depth from the central region to the second molar region in individuals with complete maxillary edentulism. The study showed that the loss of horizontal bone width as a result of alveolar crest resorption in edentulous patients was advanced and the need for horizontal augmentation was very high in this group of patients being considered for dental implant surgery.