Person: YILDIZ, COŞKUN
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YILDIZ
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COŞKUN
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Publication Metadata only Fracture Resistance of Manually and CAD/CAM Manufactured Ceramic Onlays(WILEY-BLACKWELL, 2013) EVREN, BUKET; Yildiz, Coskun; Vanlioglu, Burcin Akoglu; Evren, Buket; Uludamar, Altay; Kulak-Ozkan, YaseminPurposeThis in vitro study aimed to evaluate fracture resistance in lithium disilicate onlays fabricated with IPS e.max Press and IPS e.max CAD systems and luted with different adhesive cements. Material and MethodsFifty maxillary first molars were prepared using a mesio-occluso-disto-lingual onlay cavity model. Ten onlays from each group were cemented using etch-and-rinse adhesives and high-viscosity composite resin cement, and 10 were cemented with self-adhesive, dual-curing universal resin cement. Fracture resistance was measured. ResultsSignificant differences were observed between resin cements (p < 0.05) and between materials (p < 0.05), but the interaction of these variables did not produce a significant difference. The fracture resistance of pressable ceramics was significantly higher than that of CAD/CAM onlays (p < 0.05), and Syntac Variolink was significantly higher than that of Multilink Sprint (p < 0.05). ConclusionAll groups showed clinically acceptable fracture strength results. According to the study, both the onlay fabrication system and adhesive cements can be a viable treatment option.Publication Open Access Treatment modalities of temporamandibular disorders [Temporomandibular Eklem Rahatsizliklari Tedavi Yöntemleri](Cumhuriyet University Faculty of Dentistry, 2015-02-11) YILDIZ, COŞKUN; Yildiz K., Şanivar Z., Aslan U., Yildiz C.Temporomandibular joint (TMJ), morphologically variable from person to person. Temporomandibular disorders (TMD) refers to the muscles of mastication, Temporomandibular joint and temporomandibular adding adjacent tissues is often painful, refers to the physiological and functional disorders. Discovery of new techniques, and especially computer advances, TMJ Anatomy and function of the evaluation has provided us. Dentists, dental interventions reviewed the findings of the disease during the lessons. Patients are often increased pain and/or are in search of treatment due to dysfunction. In this review the TMD diagnosis and treatment by providing information about the current approach is intended to promote.Publication Metadata only Clinical procedures, designs, and survival rates of all-ceramic resin-bonded fixed dental prostheses in the anterior region: A systematic review(WILEY, 2018) EVREN, BUKET; Tezulas, Emre; Yildiz, Coskun; Evren, Buket; Ozkan, YaseminObjectives: The aim of this study is to systematically review all the clinical articles about all-ceramic resin-bonded fixed dental prosthesis (RBFDP) in the anterior region and assess their designs, clinical procedures, and survival rates. A systematic review was conducted after searching electronic databases PubMed/Medline and EBSCOhost Research Databases for articles published in English between 1987 and July 2017. Materials and Methods: The inclusion criteria were selected as all clinical studies, original design clinical reports, and clinical reports (follow-up time more than 1 year) as all clinical information in the literature are desired to be included in the present review. Results: The initial electronic search generated 472 articles from PubMed/Medline and 464 articles from EBSCOhost Research Databases. After selection of the articles as per the inclusion criteria, a final sample of 29 original studies is decided as: 1 randomized controlled clinical trial, 4 clinical controlled trials, 4 prospective cohort studies, 2 retrospective cohort studies, 6 original design clinical reports, and 12 clinical reports. After evaluation of the selected articles, it is likely that cantilever design all-ceramic RBFDPs are more successful than two retainer design in the anterior region; however, there is limited evidence for this result in the literature. Conclusion: Well-designed randomized controlled clinical trials with large sample size are still needed to achieve more accurate results about the clinical success rate of different RBFDPs designs in the anterior region.Publication Open Access Rehabilitation of Posterior Maxilla with Zygomatic and Dental Implant after Tumor Resection: A Case Report(2013) YILDIZ, COŞKUN; Ugurlu, Faysal; Yıldız, Coskun; Sener, B. C.; Sertgoz, AtillaZygomatic implants have been used for dental rehabilitation in patients with insufficient bone in the posterior upper jaw, due to, for example, tumor resection, trauma, or atrophy. Zygomatic implants are an alternative to complex free or vascularized bone grafting and distraction osteogenesis. A 42-year-old male patient with a severe defect in the right posterior maxilla, starting from the first canine region, which had occurred after tumor resection 3 years earlier, was referred to our department. One zygomatic implant (Brenemark System, Nobel Biocare, Goteborg, Sweden) to the zygoma and one dental implant to the canine region were placed. After a 5-month osseointegration period, a fixed denture was fabricated and adapted to the implants. Although the surgical and prosthetic procedures for zygoma implants are not easy, the final outcomes can be successful with appropriate planning.Publication Open Access The effect of temporary hydrostatic splint on occlusion with computerized occlusal analysis system(2012) EVREN, BUKET; Vanlioglu, Burçin; Evren, Buket; Gözneli, Rifat; Yildiz, Coskun; Özkan, YaseminKulak; Gözler, SerdarPublication Open Access Marginal-internal adaptation and fracture resistance of CAD/CAM crown restorations(JAPANESE SOC DENTAL MATERIALS DEVICES, 2013) EVREN, BUKET; Yildiz, Coskun; Vanlioglu, Burcin Akoglu; Evren, Buket; Uludamar, Altay; Ozkan, Yasemin KulakThis study evaluated the marginal adaptation and fracture resistance of CAD/CAM-fabricated zirconia crowns luted using different luting agents. Twenty crown restorations were produced using IPS ZirCAD zirconium oxide blocks (IZC), and another 20 using Lava zirconium oxide blocks (L). Ten teeth were used as control. Luting agents used were an etch-and-rinse adhesive (Variolink II) and a self-etch adhesive (Multilink Automix). Internal and marginal adaptation was evaluated using silicone replica technique. Fracture resistance was evaluated using a compression test. Marginal discrepancy was 89.26 mu m for L crowns and 88.84 mu m for IZC crowns, and difference was statistically insignificant. However, L crowns showed significantly larger axial and occlusal gaps than IZC crowns (p<0.05). Fracture resistance of IZC-Multilink was higher than the other groups, although the difference was not significant. Results showed that CAD/CAM-fabricated crowns showed acceptable in vitro marginal discrepancies and fracture strengths.Publication Metadata only Comparison of marginal and internal fit of press-on-metal and conventional ceramic systems for three- and four-unit implant-supported partial fixed dental prostheses: An in vitro study(MOSBY-ELSEVIER, 2015) YILDIZ, COŞKUN; Bayramoglu, Emre; Ozkan, Yasemin Kulak; Yildiz, CoskunStatement of problem. Adaptation is an important factor in the long-term clinical success of implant supported ceramic restorations. Ceramic firings may affect the adaptation of the restoration. Purpose. The purpose of this study was to compare the marginal and internal adaptation of 3 different restorative materials and the effect of veneering/pressing on the material used for 3- and 4-unit implant supported fixed dental prostheses. Material and methods. One mandibular epoxy cast was prepared for 3-unit restorations and one for 4-unit restorations. Impressions of the casts were made and 60 stone die casts (30 3-unit, 30 4-unit) produced. The casts were divided into 3 subgroups: group MCR, conventional metal ceramic restorations; group POM, press-on-metal restorations; group ZIR, computer-aided design/computer-aided manufacturing CAD/CAM) zirconia restorations. A replica technique was used to examine the marginal and internal gap values. A total of 2400 measurements were made by making 40 measurements of each restoration. The data were evaluated statistically using analysis of variance and the least significant difference post hoc test (alpha=.05). Results. The lowest marginal gaps were found in group POM (81.58 mu m) and the highest in group MCR (103.82 mu m). The differences in marginal adaptation measurements were found to be statistically significant. The highest values for internal adaptation were found at the occlusal surface in all groups. Conclusions. Although veneering metal ceramic restorations increased the misfit of the restoration, the marginal discrepancy of the materials (81 to 120 mu m) can be considered clinically acceptable.Publication Open Access Retention behaviors of different attachment systems: Precious versus non-precious, precision versus semi-precision(JAPANESE SOC DENTAL MATERIALS DEVICES, 2013) EVREN, BUKET; Gozneli, Rifat; Yildiz, Coskun; Vanlioglu, Burcin; Evren, Buket Akalin; Kulak-Ozkan, YaseminThe aims of this study were to investigate the retention force changes of different attachment systems after 10,000 insertion-separation cycles and the difference in retention force between precious and non-precious materials of the same attachment system. Four types of attachments (Ball, Rod, M3 stud, and AP-Piccolino), produced using both precious and non-precious metal alloys, were tested (n=6). Data were analyzed using analysis of variance (ANOVA), Tukey's multiple comparison test, and t-test at a significance level of p <= 0.05. Retention forces of all attachment types were significantly decreased after 10,000 insertion-separation cycles (p <= 0.05). Rod and M3 attachment systems showed an initial increase in retention force, then an eventual decrease. At the end of the test, precious types of M3 and AP-Piccolino attachments had significantly higher retention force values than their non-precious ones (p <= 0.05). Friction between non-precious attachment parts resulted in a higher retention loss than precious metal alloys.Publication Open Access Temporomandibular joint imaging techniques [Temporomandibular eklem görüntüleme yöntemleri](Cumhuriyet University Faculty of Dentistry, 2015-08-12) YILDIZ, COŞKUN; Şanivar Z., Yildiz K., Aslan U., Yildiz C.Invention of new techniques and improvement of especially computer systems were provided better assessment of TMJ anatomy and functions. Pathophysiology of TMD was better understood with images associated clinical findings. Understanding of TMD's improvements were caused emergence of new treatment approaches. TMJ imaging techniques can be arranged as direct radiographies, conventional tomography, panoramic radiography, kinetic X-ray imaging, arthrography, ultrasonography, computerized tomography, magnetic resonance imaging, nuclear medicine, cephalometric radiography. The technique is chosen which is best showing the pathology of hard and soft tissues, most easily accessible as equipment, the radiation dose of at least and most suitable for other contraindications. At this review, TMJ imaging techniques were summarized.