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  • Küçük Resim
    Öğe
    Conversion Degree, Microhardness, Microleakage and Fluoride Release of Different Fissure Sealants
    (ELSEVIER, 2010) Kuşgöz, Adem; Tüzüner, Tamer; Ülker, Mustafa; Kemer, Barış; Saray, Onur
    The purpose of this study was to determine the degree of conversion (DC), microhardness, microleakage and fluoride release of a nano-filled resin based fissure sealant (Grandio Seal, GS) and compare it with an un-filled resin based fissure sealant (Clinpro, CL) and a glassionomer based fissure sealant (Fuji Triage, FT). Disk shaped specimens were prepared from tested fissure sealants to determine the DC, Vicker hardness (VHN) and fluoride release (FR). The DC and VHN of each material was evaluated after 24 h. The cumulative fluoride concentrations were evaluated at 1 h, 6 h, 12 h, 1, 7, 15 and 30 days. For microleakage evaluation, fissure sealants were applied to the etched and dried enamel surfaces of sound third molar teeth according to the manufacturer’s instructions (n = 10). After the thermocycling and mechanical loading procedures, microleakage assessments were carried out. Data were analyzed using oneway ANOVA followed by a post hoc Tukey test, the Kruskal Wallis and Mann–Whitney U test (p < 0.05). Results revealed differences regarding DC between all groups: FT (89%) > GS (55.02%) > CL (%51.10) (p < 0.05). The VHN values were significantly different among all groups in the following order: GS > FT > CL (p < 0.05). FT exhibited significantly higher microleakage scores compared to the CL and GS sealants (p < 0.05). The FR of FT was significantly greater than CL and GS (p < 0.05). Nano-filled resin based sealant can be used as an alternative to other fissure sealant materials because of its superior hardness results and feasible sealing ability.
  • Küçük Resim
    Öğe
    Erken çocukluk çağı çürükleri ve etiyolojisi: Güncel literatür derlemesi
    (Selçuk Üniversitesi, 2016) Kuşgöz, Adem; Aydınoğlu, Sema
    Yetmiş bir aylık ve daha küçük çocuklardaki bir veya daha fazla çürük lezyonu (kavite oluşmuş ya da oluşmamış), diş kaybı (çürüğe bağlı) veya dolgulu süt dişinin olması erken çocukluk çağı çürüğü (EÇÇ) olarak tanımlanmaktadır. Bu derlemenin amacı; okul öncesi çocuklarda görülen en yaygın ve agresif hastalıkların başında gelen erken çocukluk çağı çürüklerinin tanımı, prevelansı ve risk faktörleri ile alakalı güncel literatür bilgilerinin aktarılmasıdır.
  • Küçük Resim Yok
    Öğe
    Residual HEMA and TEGDMA Release and Cytotoxicity Evaluation of Resin-Modified Glass Ionomer Cement and Compomers Cured with Different Light Sources
    (HINDAWI LTD, 2014) Botsalı, Murat Selim; Kuşgöz, Adem; Altıntaş, Subutay Han; Ülker, Hayriye Esra; Tanrıver, Mehmet; Kılıç, Serdar; Başak, Feridun
    The purpose of this study was first to evaluate the elution of 2-hydroxyethyl methacrylate (HEMA) and triethylene glycol dimethacrylate (TEGDMA) monomers from resin-modified glass ionomer cement (RMGIC) and compomers cured with halogen and light-emitting diode (LED) light-curing units (LCUs). The effect of cured materials on the viability of L929 fibroblast cells was also evaluated. One RMGIC (Ketac N100) and two compomers (Dyract Extra and Twinkystar) were tested. Materials were prepared in teflon disks and light-cured with LED or halogen LCUs. The residual monomers of resin materials in solution were identified using high-performance liquid chromatography. The fibroblast cells' viability was analyzed using MTT assay. The type of LCU did not have a significant effect on the elution of HEMA and TEGDMA. A greater amount of HEMA than TEGMDA was eluted. The amount of TEGDMA eluted from Twinkystar was greater than Dyract Extra (P < 0.05) when cured with a halogen LCU. All material-LCU combinations decreased the fibroblast cells' viability more than the control group (P < 0.01), except for Dyract Extra cured with a halogen LCU (P > 0.05). Curing with the LED LCU decreased the cells' viability more than curing with the halogen LCU for compomers. For Ketac N100, the halogen LCU decreased the cells' viability more than the LED LCU.