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- 검색키워드
- 저자 : Akkol, Elif (검색결과 5 건)
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Dentin moisture conditions strongly influence its interactions with bioactive root canal sealers
Ozlek, Esin,Gunduz, Huseyin,Akkol, Elif,Neelakantan, Prasanna The Korean Academy of Conservative Dentistry 2020 Restorative Dentistry & Endodontics Vol.45 No.1
Objectives: It is known that bioactive materials interact with the dentin to undergo biomineralization. The exact role of moisture in this interaction is unknown. Here, we investigate the effects of dentin moisture conditions on the dislocation resistance of two bioactive root canal sealers (MTA Fillapex [Angelus Solucoes Odontologicas] and GuttaFlow BioSeal [Colténe/Whaledent AG]) at 3 weeks and 3 months after obturation. Materials and Methods: Mandibular premolars (n = 120) were prepared and randomly divided into 3 groups based on the dentin condition: group 1, dry dentin; group 2, moist dentin; group 3, wet dentin. Each group was divided into 2 subgroups for root canal filling: MTA Fillapex and GuttaFlow BioSeal. Dislocation resistance was evaluated by measuring the push-out bond strength at 3 weeks and 3 months. Failure modes were examined under a stereomicroscope. Data were statistically analyzed by Kruskal-Wallis test with a significance level of 5%. Results: Moist dentin resulted in higher bond strength values for both materials at both time points. This was significantly higher than wet and dry dentin for both the sealers at the 3 months (p < 0.05), while at 3 weeks it was significant only for GuttaFlow Bioseal. The different moisture conditions demonstrated similar trends in their effects on the dislocation resistance of the 2 root canal sealers. Conclusions: The dentin moisture conditions had a significant impact on its interaction with the bioactive materials tested. Maintaining moist dentin, but not dry or wet dentin, may be advantageous before the filling root canals with bioactive sealers.
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Dentin moisture conditions strongly influence its interactions with bioactive root canal sealers
Ozlek Esin,Gündüz Hüseyin,Akkol Elif,Neelakantan Prasanna 대한치과보존학회 2020 Restorative Dentistry & Endodontics Vol.45 No.2
Objectives: It is known that bioactive materials interact with the dentin to undergo biomineralization. The exact role of moisture in this interaction is unknown. Here, we investigate the effects of dentin moisture conditions on the dislocation resistance of two bioactive root canal sealers (MTA Fillapex [Angelus Solucoes Odontologicas] and GuttaFlow BioSeal [Colténe/Whaledent AG]) at 3 weeks and 3 months after obturation. Materials and Methods: Mandibular premolars (n = 120) were prepared and randomly divided into 3 groups based on the dentin condition: group 1, dry dentin; group 2, moist dentin; group 3, wet dentin. Each group was divided into 2 subgroups for root canal filling: MTA Fillapex and GuttaFlow BioSeal. Dislocation resistance was evaluated by measuring the push-out bond strength at 3 weeks and 3 months. Failure modes were examined under a stereomicroscope. Data were statistically analyzed by Kruskal-Wallis test with a significance level of 5%. Results: Moist dentin resulted in higher bond strength values for both materials at both time points. This was significantly higher than wet and dry dentin for both the sealers at the 3 months (p < 0.05), while at 3 weeks it was significant only for GuttaFlow Bioseal. The different moisture conditions demonstrated similar trends in their effects on the dislocation resistance of the 2 root canal sealers. Conclusions: The dentin moisture conditions had a significant impact on its interaction with the bioactive materials tested. Maintaining moist dentin, but not dry or wet dentin, may be advantageous before the filling root canals with bioactive sealers.
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Assessment of Anti-Inflammatory and Antinociceptive Activities of Olea europaea L.
İpek Peşin Süntar,Esra Ku¨peli Akkol,Turhan Baykal 한국식품영양과학회 2010 Journal of medicinal food Vol.13 No.2
Leaves and fruits of Olea europaea L. (Family Oleaceae) are used for the treatment of various kinds of diseases, i.e., rheumatism and hemorrhoids, and as a vasodilator in vascular disorders for ages in folk medicine. In order to evaluate this information, anti-inflammatory and antinociceptive activities of the ethanolic and n-hexane extracts prepared from the fruits of O. europaea were investigated. For the anti-inflammatory activity, the carrageenan-induced hind paw edema and acetic acid-induced increased capillary permeability models were used, whereas for the antinociceptive activity, the p-benzoquinone-induced writhing and hot plate tests in mice were used. The results revealed that the ethanolic extract did not show a significant anti-inflammatory or analgesic activity, whereas the n-hexane extract displayed 12.7–27.8% inhibition on the carrageenan-induced hind paw edema model at the 400mg/kg dose, without inducing any apparent acute toxicity as well as gastric damage. Further studies are warranted to define and isolate the active anti-inflammatory and antinociceptive components from this plant, which may yield safe and effective agents to be used in the treatment of inflammatory disorders.
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Ufuk Koca,Ipek Süntar,Esra Küpeli Akkol,Demet Yılmazer,Murat Alper 한국식품영양과학회 2011 Journal of medicinal food Vol.14 No.1
Leaves and fruits of Olea europaea L. (olive) have been used externally as an emollient for skin ulcers and for healing of inflammatory wounds. n-Hexane and aqueous extracts, prepared from the dried leaves of olive, were evaluated for their wound healing activity by using in vivo wound models of linear incision and circular excision in comparison with the reference ointment Madecassol^dⓡ(Bayer, Istanbul, Turkey). The group of animals treated with the aqueous extract demonstrated increased contraction (87.1%) on excision and a significant increase in wound tensile strength (34.8%) on incision models compared to the other groups. Moreover, the antioxidant activity assay showed that aqueous extract has higher scavenging ability than the n-hexane extract. According to the experimental data, the aqueous extract of O. europaea leaves displayed wound healing activity. Secoiridoid oleuropein (4.6059%) was identified as the major active compound according to high-performance liquid chromatography analysis of the aqueous extract.
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Ibrahim Tumen,Ipek Su¨ntar,Fred J. Eller,Hikmet Keles,Esra Ku¨peli Akkol 한국식품영양과학회 2013 Journal of medicinal food Vol.16 No.1
Ethnobotanical surveys indicated that in the traditional medicines worldwide, several Juniperus species are utilized as antihelmintic, diuretic, stimulant, antiseptic, carminative, stomachic, antirheumatic, antifungal, and for wound healing. In the present study, essential oils obtained from heartwood samples of Juniperus virginiana L., Juniperus occidentalis Hook. and Juniperus ashei J. Buchholz were evaluated for wound healing and anti-inflammatory activities by using in vivo experimental methods. The essential oils were obtained by the supercritical carbon dioxide extraction method. Linear incision and circular excision wound models were performed for the wound-healing activity assessment. The tissues were also evaluated for the hydroxyproline content as well as histopathologically. To evaluate the anti-inflammatory activity of the essential oils, the test used was an acetic acid-induced increase in capillary permeability. The essential oil of J. occidentalis showed the highest activity on the in vivo biological activity models. Additionaly, the oil of J. virginiana was found highly effective in the anti-inflammatory activity method. The experimental data demonstrated that essential oil of J. occidentalis displayed significant wound-healing and anti-inflammatory activities
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