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KÖSE, KEMAL NACİ

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KEMAL NACİ

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2018 - 201912020 - 20231
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Author: KURU, LEYLA × Has files: true ×

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    PublicationOpen 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, Leyla
    Hyaluronic 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.
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    PublicationOpen Access
    Bifidobacterium animalis subsp. lactis as adjunct to non-surgical periodontal treatment in periodontitis: a randomized controlled clinical trial
    (2023-01-01) KURU, LEYLA; KADİR, TANJU; KÖSE, KEMAL NACİ; Özener H. Ö., KURU L., KADİR T., Kuru B.
    © 2023, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.Objectives: The purpose of this study is to investigate the clinical and microbiological effects of Bifidobacterium animalis subsp. lactis DN-173010 containing yogurt as an adjunct to non-surgical periodontal treatment in periodontitis patients. Materials and methods: This is a prospective randomized controlled clinical study registered with NCT05408364 under clinical trial registration. Thirty periodontitis patients were divided into 2 groups at random. As adjunctive to supra and subgingival instrumentation, the test group consumed Bifidobacterium animalis subsp. lactis DN-173010 containing yogurt while the control group consumed natural yogurt, once daily for 28 days. The plaque index (PI), gingival index (GI), bleeding on probing (BOP), probing depth (PD), and clinical attachment level (CAL) were recorded at baseline, 28th day, and 3rd month. Microbiological analysis was performed using culture method by obtaining subgingival plaque samples from 2 periodontal sites with 4≤PD≤6 mm at the same time points. Results: The inter-group comparisons of PI, GI, and BOP as well as the changes between the measurement time points were statistically significant in favor of the test group. There were no significant differences in terms of PD and CAL changes between the study groups at all times (∆baseline–28 days, ∆baseline–3 months) (p>0.05). The number of patients presenting subgingival Bifidobacterium species was significantly greater in the test group than the control group at the 28th day (p<0.05). Conclusions: The administration of probiotics has shown beneficial effects, albeit limited, on clinical and microbiological outcomes in the management of periodontitis patients. Clinical relevance: Daily consumption of probiotic yogurt may be supportive for supra and subgingival instrumentation.