Person: ÖZTÜRK ÖZENER, HAFİZE
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ÖZTÜRK ÖZENER
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HAFİZE
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Publication Open Access Klorheksidinin insan dişeti fibroblastları üzerindeki hücre canlılığı ve sitotoksisite etkinliğinin in vitro koşullarda değerlendirilmesi(2023-04-01) YILMAZ GÖLER, AYŞE MİNE; ÖZTÜRK ÖZENER, HAFİZE; Bayraktar G., YILMAZ GÖLER A. M., ÖZTÜRK H.Amaç: Bu in vitro çalışmada, % 0,2’lik klorheksidin (CHX) solüsyonunun, insan dişeti fibroblast (HGF) hücre canlılığı ve sitotoksisitesi üzerindeki etkilerinin değerlendirilmesi amaçlanmıştır. Gereç ve Yöntemler: Bu çalışma 30 saniye ve 2 dakikalık zaman aralıklarında, nötr pH değerindeki % 0,2’lik CHX solüsyonu ve hücre olarak ATCC’den ticari olarak temin edilen HGF-1 (CRL2014) hücre hatları kullanılarak gerçekleştirildi. CHX’in HGF üzerindeki hücre canlılığı etkileri 3-(4,5-dimetiltiazol-2-il)-2,5- difeniltetrazolyum bromür (MTT) testi ile ve sitotoksik etkileri laktat dehidrogenaz (LDH) testi ile değerlendirildi. Sonuçlar ortalama ve standart sapma değerleri kullanılarak two way ANOVA testiyle istatistiksel olarak analiz edildi (p<0,05). Bulgular: MTT testi sonuçlarına göre, % 0,2 CHX solüsyonunun zamanla hücre canlılığını azalttığı görüldü (p<0,0001). LDH testi sonuçlarına göre ise % 0,2 CHX’in sitotoksik etkinliğinin kontrol grubuna kıyasla arttığı (p<0,0001) ancak zaman içinde istatistiksel olarak anlamlı bir fark göstermediği (p>0,05) gözlendi. Sonuç: Bu in vitro çalışmanın sınırları dahilinde, % 0,2 CHX solüsyonu, 30 sn ve 2 dk’lık kısa maruz kalma sürelerinde, HGF hücre canlılığını azalttı ve HGF üzerinde sitotoksik etki gösterdi.Publication Open Access Periodontal treatment approach for dihydropyridine induced gingival overgrowth with or without drug substitution(2022-06-01) ÖZTÜRK ÖZENER, HAFİZE; KURU, LEYLA; Eroğlu O., YETİŞ E., ÖZTÜRK H., KURU L.Objectives: The aim of this study is to evaluate clinical effectiveness of nonsurgical periodontal treatment (NSPT) in patients with drug induced gingival overgrowth (DIGO) with or without drug substitution in comparison with patients presenting inflammatory gingival overgrowth (GO). Material and Methods: A total of 17 patients with generalized GO were included in this clinical trial. Based on the medical physicians consultation, DIGO patients who continued using dihydropyridine were allocated to the Group 1 (n=6), whereas patients whose drug substitution was carried out were allocated to the Group 2 (n=5). Group 3 (n=6) subjects had inflammatory GO. All study groups received NSPT for 4 sessions. At baseline and 6 weeks after NSPT, plaque index, gingival index, bleeding on probing (BOP), probing depth (PD) and, plaster model and photographic GO scores were measured. Results: NSPT resulted in significant decreases in periodontal clinical parameters in all groups (p<0.05). Intergroup comparisons of baseline measurements revealed no statistically significant differences (p>0.05) except PD value which was higher in the Group 1 compared to the Group 2 (p<0.05). Comparisons of post-NSPT data among groups exhibited statistically significant difference only between Groups 1 and 2 in the model and photographic GO scores (p<0.05). Conclusions: After the 6-week evaluation period, NSPT was found to be an effective method in reducing the severity of inflammation and size of overgrown gingival tissues in patients with DIGO and inflamatory GO. Substitution of drug causing GO provided further contribution to NSPT regarding the size of overgrown gingiva in the patients with DIGO.Publication Open Access Different treatment approaches for the localized gingival overgrowths: Case series(2018-04) DOĞAN, BAŞAK; Ozener, Hafize Ozturk; Kundak, Kubra; Sipahi, Nimet Gul; Yetis, Ece; Dogan, BasakABSTRACT Localized gingival overgrowths belong to a common group of lesions designated as focal reactive overgrowths. They occur in response to chronic, low‑grade irritation caused by plaque or any other irritant. They have multifactorial etiopathology but exhibit similar clinical features with slight variations in patient complaints. Success of the lesions’ management depends on formation of healthy contours of the surgical area after excision of lesion and absence of a recurrence. The purpose of case series is to present 6 different cases of localized gingival overgrowths and their management with the following techniques: nonsurgical periodontal treatment, gingivectomy, flap surgery, free gingival graft, gingival unit, and connective tissue graft.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 Open Access Assessment of reliability of three indices measuring gingival overgrowth procjena pouzdanosti triju indeksa za mjerenje hiperplazije gingive(2023-06-01) ÖZTÜRK ÖZENER, HAFİZE; KURU, LEYLA; Alkateb A. S., ÖZTÜRK ÖZENER H., KURU L.Objectives: Numerous indices have been used to grade the severity of gingival overgrowth which led to suspicion regarding the results concerning its prevalence and pathogenicity. The aim of this study was to assess the concordance of three different gingival overgrowth indices, which were used wide-ly in previous studies, and check their reliability and reproducibility. Material and Methods: A total of 30 full-mouth plaster casts and 90 intra-oral photographs collected from 30 patients diagnosed with gingival overgrowth were included in our study. Three trained examiners performed measurements twice on plaster casts using gingival hyperplasia index (A index) and hyperplastic index (B index). In-traoral photographs were assessed also twice using (C index). Results: Concordance of intra-exam-iner and inter-examiner reliability of the recorded measurements was carried out for each index using weighted kappa (K), with a confidence interval of 95%. The A index revealed intra-examiner total kappa values between 0.724-0.876 for horizontal measurement and 0.512-0.823 for vertical mea-surement, and inter-examiner total kappa values between 0.255-0.626 horizontally and 0.235-0.279 vertically. The B index presented intra-examiner total kappa values between 0.587-0.868 horizontally and 0.653-0.855 vertically; and inter-examiner total kappa values between 0.393-0.595 and 0.372-0.635 for horizontal and vertical measurements, respectively. The C index achieved the highest intra-examiner concordance with total kappa values between 0.758-0.855 and inter-examiner total kappa values between 0.716-0.804. Conclusions: The C index evaluated through intraoral photographs is considered the most reliable and applicable method to be utilized. The C index is suggested to be used in large scale populations with its definite detailed criteria.Publication Open Access Proteomic analysis in nifedipine induced gingival overgrowth: A pilot study(2022-12-01) YARAT, AYŞEN; ÖZTÜRK ÖZENER, HAFİZE; KURU, LEYLA; YETİŞ E., YARAT A., Eroğlu O., ÖZTÜRK H., KURU L.Objective: The aims of the present study were to investigate the proteomic profile of nifedipine induced overgrown gingiva and compare with non-overgrown gingival tissues obtained from the same patients. Methods: Seven subjects under nifedipine medication for at least 6 months and diagnosed as nifedipine induced gingival overgrowth (NIGO) participated in the study. Periodontal clinical parameters were recorded. Gingival tissue samples were harvested from overgrown (GO+ Group, n=7) and non-overgrown regions (GO- Group, n=7) of the same patients. Proteomics was performed using Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS) technique. The identified proteins were further classified according to their molecular functions, biological processes and cellular component distribution for functional gene ontology analysis using a web-based bioinformatics tool. Mann Whitney-U and ANOVA tests were performed to compare clinical parameters and identified proteins with proteomics, respectively. Results: Bleeding on probing and gingival overgrowth index of the GO+ group were statistically significantly higher than the GO- group (p<0.05, p<0.01, respectively). A total of 143 proteins were identified in 14 gingival tissue samples using proteomics. Among the proteins identified, 79 of them were detected in higher quantities in the GO+ group (p<0.05) whereas remaining 64 were found higher in the GO- group (p<0.05). The analysis of functional gene ontology demonstrated that certain proteins exhibit roles in either stimulatory or inhibitory processes including cell proliferation, growth and apoptosis. Conclusion: The proteomic profiles of overgrown and non-overgrown gingiva suggest that the identified proteins expressed at different levels in both groups may contribute to the pathogenesis and progression of NIGO.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.