Browsing by Author "Guler, Sevki"

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Citation Count: 0
Comparison of the effectiveness of Ankaferd Blood Stopper(R) and Emdogain in periodontal regeneration
(Wiley, 2022) Keleş, Gonca; Cetinkaya, Burcu Ozkan; Kurt Bayrakdar, Sevda; Ayas, Bulent; Keles, Gonca Cayir; Periodontoloji / Periodontology
Objectives The present study was performed to compare the effectiveness of Ankaferd Blood Stopper(R) (ABS) with enamel matrix derivatives (EMD) for treating fenestration defects in rats. Materials and Methods Forty-eight male Wistar rats were randomly divided into six groups (each n = 8). Fenestration defects were created in all rats, to which ABS, EMD, or saline (S) was then applied. The rats were grouped and sacrificed at one of two different time points, as follows: ABS-10-group, ABS-treatment/sacrifice on day 10; EMD-10-group, EMD-treatment/sacrifice on day 10; S-10-group, S-treatment/sacrifice on day 10; ABS-38-group, ABS-treatment/sacrifice on day 38; EMD-38-group, EMD-treatment/sacrifice on day 38; and S-38-group, S-treatment/sacrifice on day 38. Then, histomorphometric analysis including measurements of new bone area (NBA) and new bone ratio (NBR), and immunohistochemical analysis including the determination of osteopontin (OPN) and type-III-collagen (C-III) expression were performed. Results The NBA and NBR were significantly higher in the ABS-10-group and EMD-10-group compared to the S-10-group (p < .05), and in the EMD-38-group compared to the S-38-group (p < .05). The levels of C-III and OPN immunoreactivity were significantly higher in the ABS-10-group compared to the S-10-group (p < .017). Conclusions The results of this study suggested that ABS can promote early periodontal regeneration, although its efficacy seems to decrease over time.
Citation Count: 1
Histopathological and biochemical evaluation of paeoniflorin administration in an experimental periodontitis model
(Nihon Univ, School dentistry, 2019) Keleş, Gonca; Keles, Gonca Cayir; Kurt, Sevda; Ciftci, Alper; Ayas, Bulent; Guler, Sevki; Cetinkaya, Burcu Ozkan; Periodontoloji / Periodontology
The purpose of this study was to evaluate the effects of administered Paeoniflorin (Pae) on periodontal tissues within an experimental periodontitis model. Forty male Wistar rats were used in this study and experimental periodontitis was created in all rats except in the control group (n = 10, first group). In the periodontitis group, experimental periodontitis was created but no other application was performed (n = 10, second group). In the other groups created experimental periodontitis, systemic Pae (n = 10, third group) or saline (n = 10, fourth group) was applied. A biochemical analysis of the gingival vascular endothelial growth factor (VEGF) levels and a histomorphometric analysis (measurements of the area of alveolar bone, alveolar bone resorption, and attachment loss) were performed. In the Pae group, the area of the alveolar bone was increased, while alveolar bone resorption and attachment loss decreased. Gingival VEGF levels increased in all groups that created experimental periodontitis and the greatest increase seen in the Pae group. Histomorphometric and biochemical analyses in this study suggest that Pae has a curative effect on periodontal tissues. However, additional studies are needed to confirm these results.
Citation Count: 5
Histopathological and biochemical evaluation of the effect of Paeoniflorin on the periodontium during and after periodontitis formation in rats
(Pergamon-elsevier Science Ltd, 2019) Kurt, Sevda; Gurkan, Cagla Gul; Tezal, Gonca Cayir Keles; Ciftci, Alper; Gurgor, Pinar Naile; Guler, Sevki; Cetinkaya, Burcu Ozkan
Objectives: Appraise the effect of systemic Paeoniflorin (Pae) application on the periodontium during and after induction of experimental periodontitis in the presence of ligature and after its removal. Design: Seventy male Wistar rats were separated into seven equal groups. The first group was reserved as healthy control group (Group 1: no periodontitis, no medication) and experimental periodontitis was induced with ligature in the remaining rats. In experimental periodontitis groups, Pae or saline was administered systemically in three differet periods; during the experimental periodontitis induction (period 1), after experimental periodontitis induction which ligature removed (period 2) or ligature kept in position (period 3). Only, one of the groups acted as the control periodontitis group and received no treatment. Experimental periodontitis groups were as follows; Group 2: medication in period 1, Group 3: periodontitis and no medication, Group 4: medication in period 2, Group 5: saline application in period 2, Group 6: medication in period 3, Group 7: saline application in period 3. Matrix metalloproteinases-9 (MMP-9) levels and interleukin-10 (IL-10) levels were detected biochemically and histomorphometric analyses were performed. These analyses included measurements of the area of alveolar bone, the level of alveolar bone, and attachment loss. Results: Area of alveolar bone and IL-10 levels were higher in the Pae-administered groups; level of alveolar bone, attachment loss, and MMP-9 levels were correspondingly lower (P < 0.05). The beneficial effects at histomorphometrical and biochemical levels of Pae were the strongest in the rats that were administered Pae after the removal of ligature. Conclusions: Systemically administered Pae had a positive effect on the healing of periodontal tissues. Pae can be used as a new therapeutic agent for periodontal diseases, but microbiology-based studies and more extensive biochemistry-based experimental and clinical studies are needed to address this possibility.