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Öğe Areas for use of PEEK material in dentistry(Uluslararası Diş Araştırmaları Birliği, 2018) Tekin, Samet; Cangül, Suzan; Adıgüzel, Özkan; Değer, YalçınPolyetheretherketone (PEEK) material is a polycyclic, aromatic,thermoplastic polymer that is semi-crystalline and has a linearstructure. PEEK has good mechanical and electrical properties such asresistance to high temperature and resistance to hydrolysis. Inaddition, because of the property of high biocompatibility, use of PEEKhas increased in orthopedic and trauma cases. The most characteristicproperty of PEEK material is that it has a low elasticity modulus, closeto that of bone. It has been suggested that stress-based problemscould be reduced with this material due to the low elasticity modulus.In the light of this information, PEEK material could be considered asan alternative to conventional materials in the field of dentistry.Öğe Comparison of antibacterial activity, cytotoxicity, and fluoride release of glass Ionomer restorative dental cements in dentistry(International Scientific Information, 2023) Günay, Ayşe; Çelenk, Sema; Adıgüzel, Özkan; Cangül, Suzan; Özcan, Nida; Çakmakoğlu, Ezgi EroğluBACKGROUND: This study aimed to compare the antibacterial activity, cytotoxicity, and fluoride release of 4 different glass ionomer cements (GIC). MATERIAL AND METHODS: A total of 200 samples were prepared: Riva Silver, a silver-reinforced GIC; Equia Forte HT, a glass hybrid GIC; ChemFil Rock, a zinc-added GIC; and Ketac™ Molar Easymix. Using the agar diffusion test for antibacterial activity, 30 samples from each group were analyzed for Streptococcus mutans, Lactobacillus acidophilus, and Actinomyces naeslundii. The areas around the samples where no bacterial growth occurred were digitally measured and recorded. For cytotoxicity analysis, the WST-1 test was performed on 10 samples from each group using the L929 mouse fibroblast cell line. The fluoride release property was evaluated using an ion-selective electrode method on 10 samples from each group. RESULTS: The group that used Ketac™ Molar Easymix showed the lowest antibacterial activity against S. mutans, L. acidophilus, and A. naeslundii. In all 3 days of cytotoxicity testing, the group that used Riva Silver was found to be the least toxic material, while the group that used ChemFil Rock did not have viable cells after the 1st day. In all 4 materials, fluoride release values gradually increased since the first day, with Ketac™ Molar Easymix having the highest fluoride release. CONCLUSIONS: Of all the GICs tested, Ketac™ Molar Easymix demonstrated the least antibacterial activity despite having the highest fluoride release, while Riva Silver was found to be the least cytotoxic material.Öğe A COMPARISON OF THE WATER ABSORPTION AND WATER SOLUBILITY VALUES OF FOUR DIFFERENT COMPOSITE RESIN MATERIALS(2018) Adıgüzel, Özkan; Öztekin, Faruk; Satıcı, Ömer; Cangül, Suzan; Tekin, SametObjectives: The aim of this study was to compare thewater absorption and water solubility of four differentcomposte resin materials.Materials and Methods: A total of 40 cylindrical discswere prepared and polymerised with light, as 10 fromeach group, each sample 2 mm in depth and 8 mm indiameter. The samples were kept for 24 hrs in adessicator until a stable weight was reached. Then, theweight of each sample was measured on highly sensitivescales. To calculate the water absorption and solubility,measurements were made again with the sensitive scalesat the end of 1, 7 and 30 days. The data obtained wereevaluated with One-Way ANOVA variance analysis andthe Friedman test.Results: As a result of the statistical analyses, significantdifferences were determined between the compositeresins in respect of water absorption on days 7 and 30 andin respect of solubility on day 30 only (p<0.05).Conclusion: When the water absorption and watersolubility of composite resins at the end of 30 days wereevaluated statistically, it was observed that Ceram X Onematerial showed the lowest values. This is related to thestructure of the restorative material.It can be concluded that the negative mechanical,physical and biological effects created by the waterabsorption and water solubility factors of restorativematerials are important issues that should be taken intoconsideration.Öğe Dört farklı laminate veneer restorasyon materyalinin bağlanma direncinin değerlendirilmesi(Yeditepe Üniversitesi Diş Hekimliği Fakültesi, 2018) Cangül, Suzan; Bakır, Elif PınarAmaç: Bu çalışmada; dört farklı laminate veneer restorasyon materyalinin bağlanma dirençleri karşılaştırmalı olarak değerlendirildi. Gereç ve Yöntem: Bu invitro çalışma; ortodontik veya periodontal nedenlerle yeni çekilmiş, çürüksüz, restorasyonsuz 60 adet üst santral keser diş üzerinde gerçekleştirildi. Tüm dişlerin labial yüzünde 0,5 mm, mesial ve distal kontakt noktalarında 0,2 mm ve gingival basamakta 0,3 mm olacak şekilde chamfer tarzında standart kavite preparasyonları hazırlandı. Kavite preparasyonları tamamlanan dişler rastgele 15’erli dört gruba ayrıldı. Birinci gruba Grandio, ikinci gruba Gradia, üçüncü gruba Amaris ve dördüncü gruba Tetric ceram restoratif materyalleri üretici firmaların önerileri doğrultusunda yerleştirilerek görünür ışık ile polimerize edildi. Daha sonra Instron test cihazına yerleştirilen dişlerdeki restorasyonlar üzerine farklı yükler uygulanarak materyallerin doğal dişten ayrılma değerleri Newton cinsinden kaydedildi. Bulgular: Ölçümler sonucu elde edilen veriler istatistiksel olarak tek yönlü varyans analizi (one way ANOVA) ve TUKEY HSD testleri kullanılarak değerlendirildi. Kırılma direnci açısından materyaller arasında anlamlı bir fark bulunamadı (p>0,05). Sonuçlar: Sonuç olarak araştırmada kullanılan nanohibrid yapılı kompozit rezin materyali olan Grandio gruplar arası değerlendirmede kırılma direnci en yüksek, mikrohibrit yapılı kompozit rezin materyallerinden Amaris ise, kırılma direnci en düşük kompozit rezin olarak belirlendi.Öğe Dört farklı laminate veneer restorasyon materyalinin bağlanma direncinin değerlendirilmesi(2015) Cangül, SuzanDişlerde görülen estetik problemler çoğunlukla travma, erken doğum, hamilelik veya bebeklik sırasında geçirilen enfeksiyonlar ve genetik bozukluklar sonucunda ortaya çıkmaktadır. Bu tür vakaların tedavisinde; öncelikle hassasiyet giderici ajanlar, takiben diş renginde restoratif materyaller, ardından laminate veneer restorasyonlar ve son olarak full seramik restorasyonlar tercih edilmektedir. Doğal dişlerde renk, şekil ve gelişim bozukluğu gibi nedenlerle meydana gelen estetik problemlerin tedavisinde en az doku kaybına neden olan yöntemlerin seçilmesi başarı şansını arttıracaktır. Renk değiştirmiş, fraktüre, malforme veya malpoze anterior dişlerin estetik tedavisinde full seramik kronlar yerine, laboratuvar işlemi gerektirmeyen direkt kompozit laminate veneer yöntemi tercih edilmektedir. Laminate veneerler; estetik, biyouyumlu, stabil, tedavi sonuçları tahmin edilebilir ve gingival iritasyon yaratma riski minimal olan restorasyon seçenekleridir. Uygulama kolaylığı ve tedavi süresinin kısa olması gibi avantajlara sahip olan kompozit rezinler, son yıllarda önemli ölçüde ilerleme sağlayan nanofil teknolojisi ve gelişmiş bonding sistemleri sayesinde sıklıkla kullanılmaya başlamıştır. Bu in-vitro çalışma; prepare edilen labial diş yüzeylerine yerleştirilen dört farklı kompozit rezin materyalinin makaslama dayanım kuvvetlerini karşılaştırmalı olarak değerlendirmek üzere planlanmıştır. Araştırmamız; ortodontik veya periodontal nedenlerle yeni çekilmiş, çürüksüz, restorasyonsuz 60 adet üst santral diş kullanılarak gerçekleştirildi. Kavite preparasyonları tamamlanan dişler rastgele 15’erli dört gruba ayrıldı. Birinci gruba Grandio, ikinci gruba Gradia, üçüncü gruba Amaris ve dördüncü gruba Tetric ceram restoratif materyalleri üretici firmaların önerileri doğrultusunda yerleştirilerek görünür ışık ile polimerize edildi. Instron test cihazına yerleştirilen dişlerdeki restorasyonlar üzerine farklı yükler uygulanarak materyallerin doğal dişten ayrılma değerleri Newton cinsinden kaydedildi. İstatistiksel olarak ANOVA Tek Yönlü Varyans Analizi ve TUKEY HSD testleri kullanılarak değerlendirilen materyaller arasında, kırılma direnci bakımından istatiksel olarak anlamlı bir fark gözlenmezken, en yüksek bağlanma dayanımı değerine sahip olan materyal Grandio olarak belirlendi (P<0,05). Anahtar kelimeler: Laminate veneer, kompozit rezin, bağlanma dayanımı.Öğe Effect of layer thickness on residual monomer release in polymerization of bulk-fill composites(Sage Publications INC., 2021) Kılıç, Vahti; Hürmüzlü, Feridun; Uğur, Yılmaz; Cangül, SuzanThe aim of the present study was to investigate and compare the quantity of residual monomers leached from the bulk-fill composites with different compositions polymerized at varying layer thickness. Three bulk-fill (X-tra-fil, Beautifil Bulk Restorative, Fill-Up) and a nanohybrid composite (Filtek Z550) were used for the study. The composite resin samples were prepared with a stainless steel mold. For each composite, two groups were constructed. The samples in the first group were prepared using the 2 + 2 mm layering technique. In the second group, the composite samples were applied as a 4 mm-thick one layer and polymerized. Then, each composite samples were kept in a 75% ethanol solution and residual monomers released from composite resins were analyzed with an HPLC device after 24hour and I month. The data were analyzed using Kruskal-Wallis and Mann-Whitney U tests. Except the Fill-Up, all of residual monomer elution from the bulk-fill composites was significantly affected by the layer thickness (p < 0.05). The greatest monomer release was detected at I month after polymerization as a single 4 mm layer for Beautifil Bulk Restorative. Fill-Up composite showed similar residual monomer release in polymerization at different layer thicknesses compared to other composite resins. In the 2 + 2 mm layering technique, the least monomer elution was detected in the Filtek Z550 composite group. While BisGMA was the most released monomer in X-tra fil composite, UDMA was the most released monomer in all other composite resins. During polymerization of the bulk-fill composite, the layer thickness of the composite applied may affect the amount of residual monomers released from the composite resins. Conventional composites may release less monomer than bulk-fill composites when used with layering.Öğe Effect of surface wetting resin on the color stability and microhardness of esthetic composites(Univ Costa Rica, Fac Odontologia, 2021) Cangül, Suzan; Erpaçal, Begüm; Adıgüzel, Özkan; Ünal, Mehmet; Günay, AyşeObjective: The aim of this study was to evaluate and compare the effects of the superficial application of two different modeling resins on the surface microhardness and discoloration of composite resins. Material and Methods: The present study used two different composites and modeling resins. The composites were placed in plastic molds. Subsequently, the modeling resins were applied on the surface of the two composite groups. The microhardness and color pertaining to all the groups were evaluated. The current study used the One-Way ANOVA and Kruskal Wallis tests, in order to perform the statistical evaluation (p<0.05). Results: The present study compared the microhardness pertaining to the groups and the highest microhardness values were observed in the Estelite Asteria group (none), whereas the lowest values were observed in the GC Essentia group (Ultradent). Moreover, the current study evaluated the color stability and the greatest discoloration was observed in the control group of the GC Essentia group, whereas the least discoloration was observed in the Estelite Asteria group that included the samples prepared using Ultradent Wetting Resin. Conclusions: The results of the present study demonstrated that the use of modeling resins, which facilitate the placement of composite resins, reduced the microhardness and discoloration of composite resins. The aforementioned effect can be attributed to the variations in the structure of the filling. However, further studies are warranted to support and verify the results of the current study.Öğe Evaluation of dentists’ and dentistry faculty students’ knowledge about HIV/AIDS and approaches to the HIV/AIDS patients*(2020) Adıgüzel, Özkan; Erpaça, Begüm; Sonkaya, Ezgi; Cangül, Suzan; Satıcı, Ömer; Tekin, SametBackground: This study is conducted to measure theknowledge of dentists and dentistry students about AIDS andto evaluate their perspectives, attitudes and behaviors towardsHIV-infected individuals.Material and Methods: This study was conducted on DicleUniversity Faculty of Dentistry 4th and 5th grade students anddentists. As a result of 2 different questionnaires, evaluationsare made on the knowledge of dentists and students about thedisease, how they behave towards the patients and theirdeficiencies. One Way ANOVA test is used for statisticalanalysis.Results: When the results of the first questionnaire wereconsidered in the evaluation of the data, the most correctlyanswered question is ‘‘It is not possible to infect HIV to thepatient from healthcare provider’ with 93.6%“disagree”response and the most incorrectly answered question is ‘If thepatient's HIV antibodies are positive, the patient is absolutelyimmune’ with 30.8% “disagree” response.Conclusions: According to the surveys and analysis dentistsand dentistry faculty students have knowledge about HIV/ AIDSbut it is not sufficient. Their negative perception of thesepatients need to be worked on. For this reason, HIV infectionrelated trainings should be organized for dentists and dentistrystudentsÖğe Evaluation of shear bond strength of amalgam restorations repaired with composite resin by different surface treatments(Uluslararası Diş Araştırmaları Birliği, 2019) Cangül, Suzan; Adıgüzel, Özkan; Erpaçal, Begüm; Ünal, Mehmet; Acartürk, Musa; Satıcı, ÖmerAim: Repairing amalgam restorations with composite resins is a clinicalpractice with many advantages. An effective adhesion is achievedbetween amalgam and composite by applied different surface treatmenton amalgam surface. In this study, the effect of adhesive systems appliedon amalgam surface on composite-amalgam connection was investigated.Methodology: Standard cavities were opened in 70 acrylic molds thathad completed their polymerization and amalgams were placed in thesecavities. Seven groups were randomly assigned to different surfacetreatments on amalgam. In group 1 only roughening with diamond bur, ingroup 2 acid etch, in group 3 acid application after roughening withdiamond bur, in group 4 roughening with diamond bur and silane, in group5 acid etch and silane, in group 6 roughening with diamond bur and AlloyPrimer and finally 7. acid etch and Alloy Primer was applied in thesamples. After the application of clearfil universal bond to all groups,composite resins were placed and polymerized. Shear bond strengthswere tested with a Universal testing machine. Obtained data wereevaluated by one way ANOVA and Tukey B tests.Results: In the statistical evaluation of the groups, the highest shearbond strength between amalgam-composite was seen in the 3rd groupwhere both roughening with diamond bur and acid were applied together,and the lowest shear bond strength was seen in the first group with onlyroughening with diamond bur. The differences between the groups werestatistically significant (p<0.05).Conclusions: The roughening of the amalgam surface affects the shearbond strength between amalgam and composite resin. These resultsobtained in vitro conditions should be supported with clinical studies.Öğe An evaluation using micro-CT data of the stress formed in the crown and periodontal tissues from the use of PEEK post and PEEK crown: A 3D finite element analysis study(Uluslararası Diş Araştırmaları Birliği, 2018) Tekin, Samet; Adıgüzel, Özkan; Cangül, SuzanAim: Metal-supported ceramics as crown material and glass fiber posts asdental post materials are in frequent current use. In recent years, it hasbeen claimed that stress-based biomechanical problems in dentistry canbe resolved with the benefit of the low elasticity modulus ofpolyetheretherketone (PEEK) material. The aim of this study was to usefinite element analysis (FEA) to compare the stresses formed by forcesapplied after the use of PEEK material as dental post and crown materialas an alternative to glass fiber posts and metal-supported ceramic crowns.Methodology: The stress analysis method used in this study was FEA.First, micro-computed tomography (micro-CT) images were obtained of amaxillary central incisor tooth and the data of the post materials scannedwith a 3-dimensional (3D) laser scanner were uploaded to a computerprogram. 3D models were obtained with designs made in the computerprogram of all the materials. The modelling of a maxillary central toothwas completed using 2 different post materials (glass fiber and PEEK) and2 different crown materials (metal ceramic and PEEK) and 4 groups wereformed for analysis. By applying force of 100 N at 135ofrom the absolutecentral point of the palatinal surface of the tooth, the stress values anddistribution occurring in the 3D periodontal models were compared.Results: The use of PEEK post reduced the stresses occurring on theperiodontal ligament (PDL) and the cortical bone, and caused no significantchange in the stresses on the crown. The use of PEEK crown reduced thestresses occurring on the crown and increased the stresses occurring on thePDL and cortical bone.Conclusions: With further in vitro and clinical studies of PEEK material,it can be considered that within a short time PEEK post and PEEK crowncould be in routine use in dentistry.Öğe Farklı kahve türlerinde bekletilen kompozit rezinlerin renk stabilitelerinin incelenmesi(Yeditepe Üniversitesi Diş Hekimliği Fakültesi, 2020) Cangül, Suzan; Adıgüzel, Özkan; Ünal, Server; Tekin, Samet; Sonkaya, Ezgi; Erpaçal, BegümAmaç: Bu çalışmadaki amaç pH dereceleri farklı kahve türlerinin estetik amaçla kullanılan kompozit rezinlerin renk değişimine etkisini değerlendirmektir. Gereç ve Yöntem: Çalışmada 4 farklı kompozit rezin (Estelite Sigma Quick, G-Aenial, Clearfil Majesty Esthetic, Ceram X One) ve 5 farklı kahve çeşidi (Nescafe, Ethiopia, Colombia, Veranda ve Türk kahvesi) kullanılmıştır. Her bir kompozit rezinden 40’ar tane olacak şekilde 2 mm derinliğinde 8 mm çapında silindir şeklinde toplam 160 tane disk hazırlandı. Her kahveye 8 adet kompozit disk konulacak şekilde rezin grupları 5 alt gruba ayrıldı. 24 saat, 48 saat ve bir hafta kahve solüsyonlarında bekletilen kompozit rezinlerin her bekletme sonrası renk ölçümleri tekrarlandı. Ölçümler Vita easyshade ölçüm cihazı ile yapıldı. İstatistiksel analizler tek yönlü varyans analizi (one-way ANOVA), Post-hoc, Friedman ve Ki-kare testleri kullanılarak yapıldı. (p=0,05). Bulgular: İstatistiksel değerlendirmeler sonucunda en fazla renklendirmeye sebep olan bekletme solüsyonu nescafe, en az renklenen kompozit rezin ise Clearfil Majesty olarak belirlenmiştir. Estelite Sigma Quick diğer rezinlere oranla daha fazla renklenme göstermiştir. Sonuç: Bu çalışmada kahve türlerinin restoratif materyallerde ciddi renklenmelere neden olduğu, fakat yapılan çalışmaların azlığı nedeniyle yeni klinik çalışmalara ihtiyaç duyulduğu sonucuna varılmıştır.Öğe İki Farklı Işık Cihazı ile Polimerize Edilen Bonding Ajanların Mikrosızıntılarının AutoCAD Programı Kullanılarak Değerlendirilmesi(2023) Günay, Ayşe; Eskibağlar, Mehmet; Cangül, Suzan; Karaağaç Eskibağlar, Büşra; Adıgüzel, Özkan; Çelenk, SemaGiriş ve Amaç: Bu çalışmanın amacı sınıf V kavitelere uygu- lanan üç farklı universal adeziv ajanın, iki farklı LED ışık cihazı ile polimerizasyonları sonucu oluşan mikrosızıntılarının Auto- CAD programı ile değerlendirilmesidir. Gereç ve Yöntem: 60 adet çekilmiş 3. molar dişin bukkal yüzeylerine sınıf V kaviteler açıldı. Hazırlanan kaviteler; Sing- le Bond Universal, Futurabond U ve Prime&Bond Universal bonding ajanları uygulanmak üzere 3 gruba, her grupta kendi içerisinde LED-B ve Valo LED olmak üzere 2 farklı ışık cihazı kullanılacak şekilde 2 alt gruba ayrıldı (n=10). 24 saat bazik fuksinde bekletilen dişler mesiodistal yönde ikiye ayrıldı ve stereomikroskop altında incelendi. Boya sızmış yüzey ala- nı AutoCAD yazılımı kullanılarak hesaplandı. Veriler Kruskal Wallis ve Mann-Whitney U testleri kullanılarak analiz edildi (p<0.05). Bulgular: Universal adezivlerin mikrosızıntı açısından istatis- tiksel olarak değerlendirilmesinde Single Bond Universal her iki ışık cihazında da en düşük, Futurabond U ise en yüksek sı- zıntı değerini göstermiştir ancak bu istatistiksel olarak anlamlı bulunamamıştır (p>0.05). Işık cihazları mikrosızıntı değerleri açısından kıyaslandığında, 3 bonding ajanda da LED B ışık cihazında Valo LED ile polimerizasyona göre daha az mikro- sızıntı gözlenmiştir. Tartışma ve Sonuç: Kullandığımız universal adezivlerin mik- rosızıntı değerleri arasında istatistiksel olarak anlamlı bir farklı- lık olmadığı tespit edilmiştir. Işık kaynaklarının güçlerindeki ve modlarındaki değişiklikler ise mikrosızıntıyı tamamen elimine etmemektedirler.Öğe Maxillary cortical bone thickness in a south- eastern anatolian population: A cone-beam computed tomography study(International Scientific Information, Inc., 2017) Adıgüzel, Özkan; Belgin, Ceren Aktuna; Falakaloğlu, Seda; Cangül, Suzan; Akkuş, ZekiBackground: The aim of this study was to measure the distance between the maxillary premolar and molar teeth apices to the buccal cortical bone and evaluate differences in gender and age group, using cone beam computed tomography (CBCT). Material/Methods: This retrospective study comprised of 451 premolar and molar teeth of one hundred and thirteen patients who were admitted to Dicle University, Faculty of Dentistry, Department of Dentomaxillofacial Radiology for different reasons. Data were analyzed using Student’s t-tests and Tukey HSD tests. Results: There was significant difference in buccal bone thickness by gender (p<0.05). The thinnest point of the maxillary buccal bone was measured in women as 2.11 mm and in men as 2.02 mm in the first premolar teeth. The thickest point of maxillary buccal bone was measured in women as 9.87 mm and in men 10.71 mm palatinal root of the first molar. A comparison of buccal bone thickness between age showed a statistically significant difference at the distobuccal and palatinal roots of the first molar, at the mesiobuccal root of the second molar (p<0.05). Conclusions: The measurements of maxillar buccal bone thickness using CBCT for various dental procedures especially in endodontic surgery, orthodontic mini implant treatment, dental implant procedures, and healing after tooth extraction that are important knowledge.Öğe A micro-computed tomography evaluation of the change in volume of different bulk-fill composite materials caused by polymerization shrinkage(Uluslararası Diş Araştırmaları Birliği, 2021) Cangül, Suzan; Adıgüzel, Özkan; Sağmak, Savaş; Evran, BegümAim: Composite resins contain different monomers and fillers that are directly affected by polymerization shrinkage. Therefore, an accurate and reliable method is needed to measure the volume changes. The aim of this study was to evaluate the amount of volume change associated with polymerization shrinkage in four different bulk-fill composite materials in class II restorations using a micro-CT device, which has high resolution and provides 3-dimensional images. Methodology: A total of 40 human 3rd molar teeth were used. First, standard class II cavities were opened on the mesial surfaces of all the teeth, and then the first micro-CT images were obtained. The same adhesive material was applied to all the teeth. The teeth were then separated into four groups, and a different bulk-fill composite was applied to each group; Filtek (FTK), X-tra Fil (XTF), Tetric Evo Ceram (TEC), and Filtek One (FLO) and the second micro-CT images were obtained. Then after polymerization of the materials, the final micro-CT images were taken, and analyses were made according to the scanning results. The Kruskal Wallis and Mann Whitney U-tests were used in the statistical evaluation of the data. Results: The volumetric gap formed after polymerization of the composite resins was not determined to be statistically significant (p>0.05). Conclusion: The volumetric difference (%) between the composite resin and the dental tissue following polymerization was seen to be greatest in XTF and least in FTK. It was concluded that the volumetric gap caused by the polymerization shrinkage of the tested materials may be due to the structure of the material.Öğe pH değerleri farklı kahve türlerinde bekletilen kompozit rezinlerin yüzey pürüzlülüğünün değerlendirilmesi(2020) Cangül, Suzan; Adıgüzel, Özkan; Öztekin, Faruk; Satıcı, Ömer; Tekin, SametAmaç: Bu çalışmanın amacı pH dereceleri farklı 5 kahveçeşidinin 4 farklı kompozit rezin üzerinde farklı periyodlardaoluşturduğu yüzey pürüzlülük miktarını değerlendirmektir.Gereç ve yöntemler: Çalışmada her kompozit grubundan(Estelite Sigma Quick, G-Aenial, Clearfil Majesty, Ceram X One)50 adet örnek hazırlandı. 2 mm derinliğinde 6 mm çapında eşitolarak hazırlanan disklere kompozit rezinler yerleştirildi. Her birörnek polimerize edildi ve polisajları yapıldı. Deney öncesiörnekler 24 saat distile suda bekletildi ve profilometre cihazıkullanılarak ilk yüzey pürüzlülük değerleri kaydedildi. Herkompozit grubu 5 alt gruba ayrıldı. Sonrasında 1. gün, 2. gün ve7. gün olacak şekilde kahvelerde (Nescafe, Türk kahvesi,Ethiopia, Colombia, Veranda) bekletilen örneklerin tekrar yüzeypürüzlülük ölçümleri yapıldı. Çalışmanın analizinde tek yönlüvaryans analizi (ANOVA) ve Tamhane’s T2 testleri (post hocçoklu karşılaştırma testi) kullanıldı.Bulgular: Kahvelerde bekletilen örneklerin 24 ve 48 saatsonundaki yüzey pürüzlülük sonuçlarının istatistiksel analizindeen fazla Ethiopia kahvesinde bekletilen Clearfil Majesty’de, enaz ise Veranda kahvesinde bekletilen Estelite Sigma Quickrezininde pürüzlülük oluşmuştur. 7. gün sonunda ise Nescafedebekletilen Ceram X One kompozit disklerinde oluşan yüzeypürüzlülüğü çok düşük değerlerde görülmüştür.Sonuç: Sonuç olarak kompozit rezinlerin yüzey pürüzlülüğündegünlük tüketilen yiyecek ve içeceklerin sadece pH’sının değil,başka birçok faktörün de etkisi olduğu belirlenmiştir.Öğe The use of micro-computed tomography in dental applications(Uluslararası Diş Araştırmaları Birliği, 2019) Erpaçal, Begüm; Adıgüzel, Özkan; Cangül, SuzanTogether with developments in digital imaging systems, there has beenincreasing use of micro-computed tomography (μCT) in many areas,primarily in dentistry. As this method allows 3-dimensional images to betaken providing safe and high quality results, without damaging thesamples being examined, it is often preferred. Consequently, it hasbecome possible to record rapid progression in endodontic studies inparticular and to research and easily compare several techniques.Furthermore, this method can be used in tissue engineering, forming datafor FEM analysis, the growth and development of craniofacial bones,imaging bone structure, and in the evaluation of implants and surroundingbone in root tip surgery, to determine mineral concentration in the teethand to measure the thickness of enamel.The aim of this review was to focus on the areas of use of μCT in dentistryand state the advantages.
