Person: ASLAN, YILMAZ UMUT
Loading...
Email Address
Birth Date
Research Projects
Organizational Units
Job Title
Last Name
ASLAN
First Name
YILMAZ UMUT
Name
18 results
Search Results
Now showing 1 - 10 of 18
Publication Open Access Two-body wear of occlusal splint materials against different antagonists(BMC, 2020-12) ÖZKAN, YASEMİN; Yildiz Domanic, Kubra; Aslan, Yilmaz Umut; Ozkan, YaseminBackground This study aimed to demonstrate that the material of the occlusal splint can be chosen according to the needs of individual patients and contribute to the knowledge of the wear rate of these materials. Methods In this study, four occlusal splint materials (Sr Ivocap Heat Cured, Valplast, SR Ivocap Elastomer and Eclipse) and three antagonists (natural tooth enamel, inCoris TZI and IPS e.max Press ceramic materials) were used. Each wear test was performed using a chewing simulator (n = 16; test load: 50 N; number of cycles: 10,000, 20,000 and 30,000; continuous rinsing with water at 30 degrees C for the wet condition). The Shapiro Wilk test was used for normal distribution suitability. Antagonist on average wear quantities both main effects and interactions of material, cycle and condition factors were investigated by Univariate variance analysis. Multiple comparisons were examined using the Games-Howell test. Results There was a statistically significant effect of the difference in materials on the amount of wear (p < 0.001). Furthermore, there was a statistically significant difference among the mean values of all materials (p > 0.001). The highest mean value was obtained with Eclipse (0,318 mu m(3)), and the lowest mean value was obtained with Valplast (0,134 mu m(3)). Conclusion Our study found differences in the in vitro wear rate among various occlusal splint materials.Publication Open Access Comparison of the accuracy of intraoral scanning systems with conventional impression in dentate patient(2020-04-01) ÖZKAN, YASEMİN; Imadettin ALSAYED;Yılmaz Umut ASLANBackground: Over the last years, different intraoral scanningsystems for direct digitalization have been introduced to the dentalmarket. However, the accuracy of these scanners is variable, andlittle information is available. The aim of this in vivo study was tocompare the accuracy of two intraoral scanning systems and thedifference between upper and lower jaw on the accuracy.Methods: 10 patients with full dentition received one conventionalimpression with polyvinyl siloxane (Elite HD+, Zhermack SpA, Italy)and three scans with CEREC OC (Sirona Dental Systems, Sirona,Bensheim, Germany) and Straumann CARES IOS (Intra oralScanner, Basel, Switzerland) for upper and lower jaw. Theconventional impressions were poured and the casts made from itwere scanned and used as the reference model to evaluateprecision and trueness of intraoral scanning virtual modelsprovided by each system. Digital models were analyzed with asoftware (Geomagic Control; Geomagic, Morrisville, USA).Results: The trueness value was 99.88±42.56 μm in upper jaw and82.6±26.81 μm in lower jaw for CEREC OC, and 105.53±25.49 μmin upper jaw, and 109.56±36.84 μm in lower jaw for CARES IOS.The differences between these two systems were not statisticallysignificant (P>0.05), but statistically significant difference wasfound in the precision (P<0.05). CEREC OC showed higher valuein both upper and lower jaws.Conclusion: CEREC OC was more precise than CARES IOS andat a similar level of trueness. No statistically significant differencewas found between upper and lower jaws in both systemsPublication Metadata only Gülme estetiğinin analizi ve estetik geçici restorasyonların hastaya sunulması(Quintessence Publishing Türkiye, 2022-01-01) ÖZKAN, YASEMİN; ASLAN, YILMAZ UMUT; ÖZKAN Y., ASLAN Y. U.Publication Metadata only İyatrojenik malokluzyonun protetik rehabilitasyonu (vaka raporu)(2022-12-02) ŞANIVAR ABBASGHOLIZADEH, ZELİHA; ASLAN, YILMAZ UMUT; Kocaağa S., ŞANIVAR ABBASGHOLIZADEH Z., ASLAN Y. U.Publication Metadata only Tam dişsiz ağızlarda implantüstü hibrit protezler: Analogdan dijitale yolculuk(2022-03-25) ASLAN, YILMAZ UMUT; ASLAN Y. U.Publication Open Access Comparison of the Accuracy and Time Efficiency of Two Different digital Impressions of Single Tooth Implant Treatments(MARMARA UNIV, INST HEALTH SCIENCES, 2020-03-31) ASLAN, YILMAZ UMUT; Alibrahim, Muhammed; Aslan, Yilmaz UmutObjective: Over the last decades, techniques and materials have evolved with the improvement in digital technology. Computer-aided impressions have been transforming the dental implant field with these developments. The aim of this in vivo study was to compare the accuracy and time efficiency between two intraoral scanning systems in single tooth implant treatment. Methods: 10 patients with single tooth bone level implant (Straumann, Basel, Switzerland) received one conventional impression with polyvinyl siloxane and three scans with 2 different intra-oral scanners (CEREC AC Omnicam and Straumann CARES IOS). The time required for the impressions was measured at this stage. The casts obtained from conventional impressions were scanned as the master model to evaluate accuracy. Digital impression files were analyzed using a software (Geomagic Control). Independent Samples Test was performed for trueness and precision. One-way ANOVA was executed for time efficiency. Least significant difference test for post hoc comparison was conducted (p<0.05). Results: The differences between the two systems regarding trueness and precision were not statistically significant (P>0.05), but a statistically significant difference was found in the time efficiency (P<0.05). CEREC AC showed the lowest mean values in time measures. Conclusions: There was no difference regarding accuracy in comparison between CEREC AC Omnicam and CARES. CEREC AC Omnicam was found to be superior in terms of time efficiency in comparison to CARES and conventional impressions.Publication Metadata only Porselen lamina veneerlerde preperasyon startejileri(2022-12-02) ASLAN, YILMAZ UMUT; ASLAN Y. U.Publication Metadata only A simple technique to facilitate the recording of intraoral scan data on cone-beam computed tomographic images during three-dimensional planning(CHURCHILL LIVINGSTONE, 2020) BAYRAM, FERİT; Gocmen, G. Bilgin; Bayram, F.; Aslan, Y. U.; Gocmen, G.Publication Open Access Evaluation of laminate veneer preparation depth with 3D systems(2020-04-01) ÖZKAN, YASEMİN; Orhan ÖZTOPRAK;Yılmaz Umut ASLAN;Yasemin KULAK ÖZKANBackground: Preparation depth of laminate veneers are essential inretention and structural integrity of restorations. The aim of this studywas to evaluate the difference between a trained professionalprosthodontist (PP) and a postgraduate prosthodontics student (PPS)in the preparation depth of laminate veneers by scanning the toothwith a 3D scanner before and after the preparation.Methods: Twenty extracted human maxillary central incisors wereevaluated by a PP and PPS. A 0.5 mm depth guide bur was used infor facial reduction and a 1 mm incisal reduction was performed witha deep chamfer. The teeth were scanned with a laser scanner at anaccuracy of 10 µm. The teeth were separated into 3 parts (incisal,middle and cervical) and then 5 points were randomly selected on theunprepared tooth and then lapped over when the preparation hadbeen completed. The data of the difference was calculated in 3Dscanning software Magics (Materialise NV, Belgium). Statisticalanalysis were performed with one-way ANOVA (p < 0.05).Results: PP results showed mean values in the Incisal of0.328+0.045 mm, Middle of 0.375+0.097 mm and Cervical of0.471+0.07 mm. PPS results showed mean values in the Incisal of0.323+0.056 mm, Middle results of 0.403+0.083 mm and Cervicalresults of 0.462+0.075 mm.Conclusion: These results suggest that a PP or a PPS can bothachieve the same precision in the preparation using a depth guidebur.Publication Metadata only Porselen lamina Veneerlerde simantasyon ve görülen komplikasyonlar(Quintessence Publishing Türkiye, 2022-01-01) ASLAN, YILMAZ UMUT; ASLAN Y. U.