Person: DALKILIĆ, EVRIM
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Publication Metadata only Effect of titanium dioxide nanotubes on the mechanical and antibacterial properties of the low-viscosity bulk-fill composite(2021-10-01T00:00:00Z) ĆZLEN, RĆMEYSA HATÄ°CE; DALKILIĆ, Evrim; KĆĆĆKYILDIRIM, Bedri Onur; AKDOÄAN EKER, AyÅegĆ¼l; Topcuoglu, Nursen; Kulekci, Guven; ĆZLEN, RĆMEYSA HATÄ°CE; DALKILIĆ, EVRIMThe purpose of this investigation is to determine the impact of titanium dioxide nanotubes (TiO2-n) on the mechanical and antibacterial properties of bulk-fill composite resin. TiO2-n were synthesized in laboratory conditions using the hydrothermal method. Varying amounts of TiO2-n were included in the bulk-fill composite resin. Microhardness, surface roughness, and the three-point bending test were used to determine the mechanical properties of the composite. After the flexural strength test, the fractured surfaces of the composite resin were examined with a high-resolution scanning electron microscope. The antibacterial activity of Streptococcus mutans (S.mutans) and Lactobacillus Casei (L.casei) was assessed using a direct contact test. The statistical examination was completed using IBM SPSS Statistics 22. Group differences were compared using the Kruskal Wallis and Dunn tests (p 0.05). Adding 0.5% and 1% TiO2-n increased the microhardness of the bulk-fill composite (p 0.05). Though adding TiO2-n did not have an antibacterial impact on S.mutans (p > 0.05), adding 0.5% TiO2-n produced an antibacterial impact on L.casei in daylight (p < 0.05). The addition of 0.5% and 1% TiO2-n increased the microhardness of the top surface of the bulk-fill composite without negatively affecting surface roughness or the composite-s three-point bending properties Adding 0.5% TiO2-n to the composite resin produced an antibacterial impact on L.casei in daylight.Publication Metadata only Influence of bulk-fill composite types, shades and light-curing units on microhardness(2020-05-01T00:00:00Z) Ćzdemir, Serife; DalkılıƧ, Evrim; ĆZDEMÄ°R, ÅERÄ°FE; DALKILIĆ, EVRIMPublication Metadata only Influence of fiber insertion and different material type on stress distribution in endocrown restorations: a 3D-FEA study.(2021-12-29T00:00:00Z) Yildirim, Gulhan; Demir, Cihan; GĆ¼ven, Melahat Ćelik; KoƧ, Osman; DalkiliƧ, Evrim; DALKILIĆ, EVRIMPublication Metadata only Volumetric change and gap formation in class V composite restorations: a micro-CT analysis(2020-07-01T00:00:00Z) OÄLAKĆI, Burcu; Halacoglu, Derya Merve; ĆZDUMAN, ZĆMRĆT CEREN; Dalkilic, Evrim; OÄLAKĆI, BURCU; ĆZDUMAN, ZĆMRĆT CEREN; DALKILIĆ, EVRIMThisin vitrostudy evaluated the volumetric change (VC) and gap formation (GF) in Class V composite restorations after light-curing and aging. Thirty-six extracted human premolars were used. Standardized Class V cavities (3 mmx3 mmx1.5 mm) were prepared. G-Premio Bond was applied. The teeth were randomly assigned into six groups (n = 6): Group FZ: Filtek Z250(microhybrid), Group SP: SDR Plus Bulk Fill Flowable (low-viscosity bulk-fill), Group EB: Estelite Bulk Fill Flow (low-viscosity bulk-fill), Group GI: G-aenial Universal Injectable (highly-filled low-viscosity), Group AF: Admira Fusion (ormocer), Group SX: Solare X (nanohybrid). Each specimen was scanned four times with micro-CT (SkyScan 1174v2, Belgium): after cavity preparation, before and after light-curing, and after aging. The VC (%) and GF (mm(3)) parameters were quantified and analysed. Then, VC after light-curing was verified with AcuVol video image analyser (n = 6). The specimens were submitted to 10,000 thermocycles (5-55 degrees C) and 100,000 load cycles (50N). The data were statistically analysed using the Kruskal-Wallis, Wilcoxon and Dunn tests (p < 0.05). After light-curing, Group AF and FZ showed significantly lower VC than Group GI. Group GI showed significantly higher total GF than Group AF, EB, FZ and SX. Group GI showed significantly higher GF than Group AF, EB and FZ in cervical region. After aging, a significant increase in the volume of the gap (VG) in cervical region was found for Group FZ and GI (p < 0.05). After light-curing, ormocer and microhybrid composites exhibited lower VC and GF than highly-filled low-viscosity composites. After aging, an increase in VG was observed for microhybrid and highly-filled low-viscosity composites for cervical region.Publication Metadata only The effect of fiber insertion on fracture strength and fracture modes in endocrown and overlay restorations.(2021-12-29T00:00:00Z) Fildisi, Mehmet Ali; Eliguzeloglu Dalkilic, Evrim; DALKILIĆ, EVRIMPublication Metadata only The Effect of Curing Modes and Times of Third-Generation Led LCU on the Mechanical Properties of Nanocomposites(2022-09-01T00:00:00Z) OÄLAKĆI, Burcu; Ozlen, Rumeysa Hatice Enginler; DEMÄ°RKOL, Metehan; ĆZDUMAN, ZĆMRĆT CEREN; KĆĆĆKYILDIRIM, Bedri Onur; DALKILIĆ, Evrim; OÄLAKĆI, BURCU; ĆZDUMAN, ZĆMRĆT CEREN; DALKILIĆ, EVRIMThis study evaluates the effect of curing modes and times on the mechanical properties of nanocomposites. Two nanocomposite resins were investigated: supra-nanohybrid (Estelite Posterior Quick; EP) and nanohybrid (Solare X; SX). They were polymerized with a light-emitting diode light-curing units (LED LCU, Valo) as follows: standard mode for 20s (ST20), high power mode for 12s (HP12), high power mode for 20s (HP20), extra power mode for 6s (XP6), and extra power mode for 20s (XP20). For Vickers microhardness (HV), disc-shaped specimens were fabricated (n=10). For the three-point bending test, bar-shaped specimens were fabricated (n=10). Flexural strength and resilience modulus were calculated. The fractured surfaces and specimen surfaces of composites were observed using scanning electron microscopy. The data were analyzed with repeated measures ANOVA, two-way variance, and Bonferroni tests (p<0.05). On the top and bottom surfaces of the EP nanocomposite resin, ST20 and HP12 revealed statistically higher HV than with XP6. Moreover, HP20 and XP20 had statistically higher HV than HP12 and XP6. For the SX nanocomposite resin, HP20 had statistically higher HV than HP12. For EP and SX, there were no significant differences in flexural strength and resilience modulus regarding the curing modes and times. Furthermore, SX demonstrated lower mechanical properties than EP. Scanning electron microscopy indicated that both nanocomposites had similar surface appearances. However, with all curing modes and times, SX exhibited layered fractures and more crack formations than EP. Different curing modes and times could influence the microhardness of nanocomposites.Publication Metadata only Profilaktik Polisaj Protokollerinin Farklı Rezin Kompozitlerin YĆ¼zey PĆ¼rĆ¼zlĆ¼lĆ¼ÄĆ¼ Ćzerine Etkisi(2021-12-01T00:00:00Z) OÄlakƧı, Burcu; FazlıoÄlu, Leyla; Ćzduman, ZĆ¼mrĆ¼t Ceren; DalkılıƧ, Evrim; OÄLAKĆI, BURCU; FAZLIOÄLU, LEYLA; ĆZDUMAN, ZĆMRĆT CEREN; DALKILIĆ, EVRIMPublication Metadata only Bulk-fill kompozitlerde kalınlıÄın artıÅının mikrosertlik Ć¼zerine etkisi(2020-08-01T00:00:00Z) Alkan Aygƶr, Fehime; Arısu, Hacer Deniz; DalkılıƧ, Evrim; DALKILIĆ, EVRIMPublication Metadata only The Effect of Different Polishing Systems on the Surface Roughness of Nanocomposites: Contact Profilometry and SEM Analyses.(2021-06-30T00:00:00Z) Oglakci, B; Kucukyildirim, B O; Ćzduman, Z C; Eliguzeloglu Dalkilic, Evrim; DALKILIĆ, EVRIMPublication Open Access How does antiseptic mouthwashes against SARS-COV-2 affect the bond strength of universal adhesive to enamel?(2021-12-01T00:00:00Z) Ćzduman, ZĆ¼mrĆ¼t Ceren; OÄlakƧı, Burcu; DoÄan, MiraƧ; DeÄer, Ceren; DalkılıƧ, Evrim; ĆZDUMAN, ZĆMRĆT CEREN; OÄLAKĆI, BURCU; DOÄAN, MÄ°RAĆ; DEÄER, CEREN; DALKILIĆ, EVRIM