Person: AĞRALI, ÖMER BİRKAN
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AĞRALI
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ÖMER BİRKAN
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Publication Open Access Evaluation of the Effectiveness of Esterified Hyaluronic Acid Fibers on Bone Regeneration in Rat Calvarial Defects(HINDAWI LTD, 2018-06-28) ÖZBEYLİ, DİLEK; Agrali, Omer B.; Yildirim, Selin; Ozener, Hafize O.; Kose, Kemal N.; Ozbeyli, Dilek; Soluk-Tekkesin, Merva; Kuru, LeylaHyaluronic acid (HA) constitutes one of the major components of the extracellular matrix domain in almost all mammals. The aim of this study was to evaluate the regenerative capacity of HA matrix in rat calvarial bone defects and compare with those of different combinations of resorbable collagen membrane (M) and bovine-derived xenograft (G). Twenty-four 3-month-old male Sprague-Dawley rats weighing 200-250 g were included. Control group was created by leaving one defect empty from 2 critical size defects with 5 mm diameter formed in the calvarial bones of 8 rats. In the same rats, the other defect was treated with HA matrix alone. One of the 2 defects formed in other 8 rats was treated with HA + G and the other with HA + M. One of the 2 defects formed in the remaining 8 rats was treated wilh G+M and the other with HA+G+M. The animals were sacrificed at 4 weeks. Histologic, histomorphometric, and immunohistochemical analyses were performed. Both HA matrix alone and its combinalions with G and M supported new bone formation (NBF). However, NBF was significantly greater in G+M and HA+G+M groups compared to control and HA alone (P < 0.00l). Bone morphogenetic protein-2 was expressed with varying degrees in all groups, without any difference among them. Within the limitations of the present study, HA matrix, used alone or in combination with G and M, did not contribute significantly to bone regeneration in rat calvarial bone defects.Publication Metadata only Peri-implant Tissues and Diseases(MARMARA UNIV, INST HEALTH SCIENCES, 2017) YILDIRIM, HATİCE SELİN; Elemek, Eser; Agrali, Omer Birkan; Yildirim, Hatice Selin; Kuru, LeylaPeri-implant diseases occur due to imbalance between host response and biofilm after successful osseointegration of an implant with the bone. Among peri-implant diseases, peri-implant mucositis is used to describe the presence of inflammation only within the mucosa, whereas peri-implantitis is characterized by loss of supporting bone in addition to the inflammation within the mucosa. For the diagnosis of peri-implant diseases, probing depth, bleeding on probing, and suppuration are clinically assessed. Additionally, supporting bone levels are radiographically evaluated. Smoking, lack of oral hygiene, history of periodontal disease, diabetes mellitus, cardiovascular diseases, and implant surface characteristics are the known risk factors for the development of peri-implant diseases. For the treatment of peri-implant mucositis, antimicrobial treatment is performed together with mechanical debridement. However, these treatment approaches are not sufficient for peri-implantitis cases. For the treatment of peri-implantitis, resective and/or regenerative surgical interventions are used in addition to mechanical debridement. It is crucial to improve the knowledge among dentists about the prevention and progression of peri-implant diseases. On the other hand, patients should be advised regular dental visits and to maintain the highest level of oral hygiene.Publication Metadata only The gingival crevicular fluid levels of growth factors in patients with amlodipine-induced gingival overgrowth: A pilot study(WOLTERS KLUWER MEDKNOW PUBLICATIONS, 2020) YILDIRIM, HATİCE SELİN; Kose, K. N.; Yilmaz, S.; Noyan, U.; Kuru, B.; Yildirim, H. S.; Agrali, O. B.; Ozener, H. O.; Kuru, L.Background: Amlodipine, calcium channel blocker (CCB), is used in the management of cardiovascular diseases which causes gingival overgrowth (GO). The growth factors may have a role in the pathogenesis of amlodipine-induced GO. Objectives: This pilot study aimed to investigate the growth factors including transforming growth factor-b1 (TGF-b1), platelet-derived growth factor-BB (PDGF-BB), and basic fibroblast growth factor (bFGF) in gingival crevicular fluid (GCF) of patients with amlodipine-induced GO and compare with of healthy subjects. Methods: GCF samples were collected from 56 sites presenting GO (GO + group) and from 38 sites not presenting GO (GO- group) of 5 patients using amlodipine for more than one year, and from 45 sites (control group) of 5 healthy subjects. The levels of TGF-b1, PDGF-BB, and bFGF were determined by using ELISA kits. Results: The mean concentration of TGF-b1 in GCF samples of GO + group (9.50 +/- 7.30 ng/ml) was higher than both GO- group (2.07 +/- 0.50 ng/ml) and control group (2.74 +/- 1.01 ng/ml) (P = 0.014). No significant difference was found among the groups in the GCF levels of PDGF-BB (P = 0.767). bFGF was detected in only 33% of the sites from patients. Conclusion: These preliminary results suggest that TGF-b1 may play a crucial role in the pathogenesis of amlodipine-induced GO.Publication Metadata only Radiographic Evaluation of the Effect of Vitamin D3 Supplementation on Regeneration of Calvarial Bone Defects in Rats(2023-09-01) AĞRALI, ÖMER BİRKAN; YILDIRIM, HATİCE SELİN; KURU, LEYLA; ÖZTÜRK ÖZENER, HAFİZE; HANCILAR G. N., AĞRALI Ö. B., GÜNGÖRMEK H. S., DEMİRCİ DELİPINAR S., KURU L., ÖZTÜRK ÖZENER H.Publication Metadata only Rat kalvaryal defektlerinde D3 vitamininin yönlendirilmiş kemik rejenerasyonu üzerine etkisinin değerlendirilmesi(2022-11-06) AĞRALI, ÖMER BİRKAN; YILDIRIM, HATİCE SELİN; KURU, LEYLA; ÖZTÜRK ÖZENER, HAFİZE; HANCILAR G. N., AĞRALI Ö. B., GÜNGÖRMEK H. S., DEMİRCİ DELİPINAR S., KURU L., ÖZTÜRK ÖZENER H.Amaç: Bu çalışmada oral yolla verilen D3 vitamininin ratlarda yönlendirilmiş kemik rejenerasyonuna etkisinin histolojik olarak değerlendirilmesi amaçlandı. Gereç-Yöntem: Çalışma 12 adet erişkin erkek SpragueDawley cinsi rat üzerinde gerçekleştirildi. Tüm ratların kalvaryal kemiklerinde 5 mm çapında oluşturulan defektlere sığır kaynaklı kemik grefti (BioOss®) ile birlikte kolajen esaslı rezorbe olabilen membran (BioGide®) uygulandı. Cerrahi sonrası ratlar rastgele iki gruba ayrıldı; birinci gruba (Kontrol Grubu) distile su, ikinci gruba (Test Grubu) ise 2 µg /kg D3 vitamini günde 1 kez olmak üzere gavajla 8 hafta boyunca verildi. 8 haftanın sonunda ratlar sakrifiye edildi. Hematoksilen-Eozin ile boyanan örnekler histolojik olarak incelendi. ImageJ yazılım programı kullanılarak yeni kemik, rezidüel greft ve fibröz doku alanları hesaplandı. Verilerin istatistiksel analizleri GraphPad Prism programında değerlendirildi. İstatistiksel anlamlılık p<0,05 olarak kabul edildi. Bulgular: Yeni kemik alan yüzdesinin test grubunda (%43,75) kontrol grubundan (%28,35) istatistiksel olarak anlamlı yüksek olduğu tespit edildi (p<0,05). Rezidüel greft alanı, test grubunda 0,56 ±0,21 mm2 iken kontrol grubunda 0,89±0,17 mm2 olarak saptandı (p<0,05). Fibröz doku alanının, test grubu (1,00±0,27 mm2) ile kontrol grubunda (1,10±0,23 mm2) benzer olduğu gözlendi (p>0,05). Sonuç: Bu çalışmanın sonuçları, yönlendirilmiş kemik rejenerasyonunu takiben oral yolla kullanılan D3 vitamininin ratların kritik boyuttaki kalvaryal defektlerinde yeni kemik dokusu oluşumunu artırdığını göstermiştir.Publication Open Access Single nucleotide polymorphisms in IL-1A RS1800587, IL-1B RS1143634 and vitamin D receptor rs731236 in stage III grade B/C periodontitis(2022-06-01) ÖZTÜRK ÖZENER, HAFİZE; ASLAN, BEGÜM; AĞRALI, ÖMER BİRKAN; ULUCAN, KORKUT; YILDIRIM, HATİCE SELİN; KURU, LEYLA; Ozener H., ASLAN B., Eken B. F., AĞRALI Ö. B., Yildrim H. S., Altunok E. C., ULUCAN K., KURU L.The purpose of the study is to determine the prevalence of interleukin (IL)-1A (rs1800587), IL-1B (rs1143634) and vitamin D receptor (VDR) (TaqI, rs731236) gene polymorphisms in the Turkish population and their association with Stage III Grade B/C periodontitis. Systemically and periodontally healthy individuals (N = 100) and Stage III Grade B/C periodontitis patients (N=100) based on clinical and radiographic examination were included in this research. Clinical attachment level, probing depth, bleeding on probing, plaque and gingival indices of the subjects were measured. Genotyping of IL-1A (rs1800587), IL-1B (rs1143634) and VDR (rs731236) polymorphisms was conducted by Real Time PCR. Allelic and genotypic distributions of IL-1A (rs1800587) gene polymorphism were not associated with periodontitis (p > 0.05). In IL-1B (rs1143634) gene polymorphism, the C allele was detected more frequently in healthy individuals compared with the periodontitis patients (p=0.045). CC genotype and C allele in VDR (rs731236) gene polymorphism was higher in periodontitis patients (p=0.031, p=0.034, respectively). In comparison with Grade B periodontitis patients and healthy subjects, CC genotype and C allele were observed more frequently in the Grade B periodontitis in terms of alleles (C/T) and genotypes for VDR (rs731236) polymorphism (p=0.024, p=0.008, respectively). This study presents that the VDR (rs731236) polymorphism are associated with enhanced susceptibility to Stage III periodontitis in the Turkish population. Furthermore, VDR (rs731236) polymorphism may be used as an identification criteria to discriminate Grade B and Grade C in Stage III periodontitis.