Yazar "Altunsoy, Mustafa" seçeneğine göre listele

Listeleniyor 1 - 4 / 4
  • Küçük Resim Yok
    Öğe
    Antimicrobial and mechanical properties of dental resin composite containing bioactive glass
    (Wichtig Publishing, 2016) Korkut, Emre; Torlak, Emrah; Altunsoy, Mustafa
    Background: The aim of this study was to evaluate the antimicrobial efficacy and mechanical properties of dental resin composites containing different amounts of microparticulate bioactive glass (BAG). Methods: Experimental resin composites were prepared by mixing resin matrix (70% BisGMA and 30% TEG-DMA) and inorganic filler with various fractions of BAG to achieve final BAG concentrations of 5, 10 and 30 wt%. Antimicrobial efficacy was assessed in aqueous suspension against Escherichia coli, Staphylococcus aureus and Streptococcus mutans and in biofilm against S. mutans. The effect of incorporation of BAG on the mechanical properties of resin composite was evaluated by measuring the surface roughness, compressive strength and flexural strength. Results: Under the dynamic contact condition, viable counts of E. coli, S. aureus and S. mutans in suspensions were reduced up to 78%, 57% and 50%, respectively, after 90 minutes of exposure to disc-shaped composite specimens, depending on the BAG contents. In 2-day-old S. mutans biofilm, incorporation of BAG into composite at ratios of 10% and 30% resulted in 0.8 and 1.4 log reductions in the viable cell counts compared with the BAG-free composite, respectively. The surface roughness values of composite specimens did not show any significant difference (p>0.05) at any concentration of BAG. However, compressive and flexural strengths of composite were decreased significantly with addition of 30% BAG (p<0.05). Conclusions: The results demonstrated the successful utilization of BAG as a promising biomaterial in resin composites to provide antimicrobial function.
  • Küçük Resim Yok
    Öğe
    Effect of different surface treatments on the shear and microtensile bond strength of resin-modified glass ionomer cement to dentin
    (Taylor & Francis Ltd, 2014) Altunsoy, Mustafa; Botsali, Murat Selim; Korkut, Emre; Kucukyilmaz, Ebru; Sener, Yagmur
    Objective. The aim of this study was to evaluate the effect of different surface treatments on the microtensile bond strength (mTBS) and shear bond strength (SBS) of resin-modified glass ionomer cement (RMGIC) to dentin. Materials and methods. Fifty-two extracted human molars were flattened to obtain dentin surfaces. For SBS assessment 40 teeth were divided into four groups according to their surface treatments (acid etching, Er: YAG laser QSP mode, Er: YAG laser MSP mode and control-SiC) (n = 10). A plastic cylinder was placed over the differently treated dentin surfaces and RMGIC was placed into the rings and polymerized. Twelve teeth were used for the mu TBS test. The treated dentin surfaces described above were restored with 4 mm high RMGIC and light cured; then, the specimens were sectioned into serial sticks (n = 15) and mu TBS and SBS were tested for failure in a testing machine with a 1 mm/min crosshead speed. The data were analyzed by one-way ANOVA and Tukey HSD tests (alpha = 0.05). Results. Acid etching showed significantly higher SBS than the other groups (p < 0.05). Er: YAG QSP and MSP-treated groups showed higher SBS values than the control group, but the difference was not statistically significant (p > 0.05). Er: YAG MSP showed the highest mu TBS value followed by acid etching, whereas the control group exhibited the lowest value (p < 0.05) and the differences between the control group and Er: YAG QSP were not significant (p > 0.05). Conclusions. The application of Er: YAG MSP mode and acid etching to dentin can be used for improving the bond strength of RMGIC.
  • Küçük Resim
    Öğe
    Effects of adhesive systems applied under fissure sealants to microleakage and shear bond strength
    (2015) Botsalı, Murat Selim; Küçükyılmaz, Ebru; Tosun, Gül; Altunsoy, Mustafa; Şener, Yağmur
    The aim of this study was to examine the effectof bonding agents under fissure sealants on bond strengthand microleakage.MATERIALS ANDMETHOD: A total of 210 freshly extracted noncarious human third molar teeth were used (105 teeth forshear bond strength and 105 teeth for microleakage assessment). The teeth were randomly assigned to 14groups, with 15 teeth in each group. Fissurit FX was applied to the etched enamel in the control groups. In the experimental groups, the self-etch adhesives: Clearfil SEBond, G Bond, Clearfil DC Bond and the total-etch adhesives: Prelude, Adper Single Bond and Optibond S wereapplied and light-cured followed by the subsequent application and light-curing of Fissurit FX. Shear bond strengthwas tested to failure in a universal testing machine with a1 mm/min crosshead speed. The shear bond strength datawas analyzed by using One Way ANOVA and Tukey HSDtests. Microleakage was evaluated by using a dye penetration method after mechanical loading and thermocycling. The microleakage data was analyzed by using theKruskal-Wallis and Tamhane tests. RESULTS: The microleakage of the Adper Single Bond Plusgroup was significantly less than that of the control group (p>0.05). However, the shear bond strength value of theAdper Single Bond Plus group was significantly less thanthat of the control group, again. The shear bond strengthvalue of Clearfil SE Bond was significantly greater thanthat of the control group (p>0.05).CONCLUSION: Clearfil SE Bond improved the shear bondstrength, and Adper Single Bond Plus decreased the microleakage of the fissure sealant. An inverse relationship was found between the microleakage and the shear bond strength performances of Adper Single Bond Plus.
  • Küçük Resim
    Öğe
    Majewski osteodysplasic primordial dwarfısm type II: Clinical findings and dental management of a child patient
    (2015) Terlemez, Arslan; Altunsoy, Mustafa; Çelebi, Hakkı
    Mikrosefalik osteodisplastik primordial cücelik tip II (MOPCII), küçük kafa ölçüleri ile doğum ve ilerleyen ciddi mikrosefali, ilerleyen kemik displazisi ve tipik yüz ve kişilik farklılıkları ile karakterize, otozomal çekinik olarak aktarılan ve nadir görülen bir cücelik tipidir. Bu olgu sunumunda, MOPC II sendromlu beş yaşında bir kız bildirilmektedir. Hasta, kliniğimize sol mandibular molar süt dişlerde şiddetli diş ağrısı ile başvurdu. Klinik incelemede birçok süt dişinin çürük olduğu ve dişlerin hipoplastik olduğu görüldü. Sol alt süt molar dişler köksüz olduğu için tedavi edilmesi mümkün değildi ve bu dişler çekildi. MOPC II sendromlu hastaların dişlerinin doğru ve zamanında değerlendirilmesi, bu hastalarda dişsel problemlerin önlenebilmesi ve ağız sağlığının sürdürülebilmesi için büyük önem taşımaktadır.