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ASLAN, YILMAZ UMUT

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YILMAZ UMUT

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2018 - 20203
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Subject: CROWNS ×

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    PublicationOpen 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 Umut
    Objective: 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.
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    Fracture Resistance of Porcelain Laminate Veneers
    (AVES PRESS LTD, 2018) KAHRAMANOĞLU, ERKUT; Tugcu, Erhan; Kahramanoglu, Erkut; Aslan, Yilmaz Umut; Ozkan, Yasemin
    In recent dentistry, laminate veneers have gained widespread utilization as a conservative treatment option of unaesthetic anterior teeth. The continued development of dental ceramics offers clinicians many options for creating highly aesthetic and functional porcelain veneers. The behavior of these restorations against the functional loads plays an important role in their success. Many studies have evaluated the fracture resistance of laminate veneers in vitro and in vivo.
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    Evaluation of two different CAD-CAM inlay-onlays in a split-mouth study: 2-year clinical follow-up
    (WILEY, 2020) ÖZKAN, YASEMİN; Coskun, Elif; Asian, Yilmaz U.; Ozkan, Yasemin K.
    Objective To evaluate the clinical performance of hybrid ceramic inlay-onlay restorations over a 2-year period. Clinical Considerations A total of 30 lithium disilicate glass ceramic (LDC; control group) and 30 hybrid ceramic (HC; test group) inlay/onlay restorations were performed in 14 patients. Clinical evaluations were performed after 1 week, 6 months, 1 year, and 2 years of cementation according to the modified United States Public Health Service (USPHS) criteria, gingival index, and plaque index. The Friedman test was used for the significant difference in time and Wilcoxon signed-rank test was used for the determination of differences. The clinical parameters, gingival and plaque indexes differences in time were analyzed with Chi-square test. No statistically significant difference (P > .05) was found between the two groups in the modified USPHS, gingival index, and plaque index evaluations, whether statistically significant differences were found within groups. The total survival rate was 100% for both groups after 2 years. Conclusion Based on the 2-year data, the tested HC can be considered a reliable material for inlay/onlay restorations. Clinical Significance The results of this in vivo study suggest that both resin nanoceramic materials and LDC materials have been successfully incorporated in treatments of inlay and onlay restorations. Short-term results showed that resin nanoceramic materials can be counted as a good choice in inlay and onlay restorations in an effort to reduce the treatment time associated with ceramic firing processes.