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Bu çalışma ile bir devlet üniversitesinin Eğitim Programları ve Öğretim Bilim Dalı doktora programına kayıtlı lisansüstü öğrencilerin görüşlerine göre Değerler Eğitimi Araştırmaları dersinin değerlendirilmesi amaçlanmıştır. Çalışmada nitel araştırma yöntemlerinden biri olan durum çalışması deseni kullanılmıştır. Çalışmaya gönüllük esasına dayalı olarak ilgili dersi alan beş doktora öğrencisi katılmıştır. Örneklem, amaçlı örnekleme dayalı ölçüt örneklem kullanılarak oluşturulmuştur. Veri çeşitlemesinin sağlanabilmesi için veriler görüşme, gözlem ve dokümanlar aracılığıyla elde edilmiştir. Veriler içerik analizine tabi tutularak araştırma bulgularına ulaşılmıştır. Araştırma sonucunda Değerler Eğitimi Araştırmaları dersine yönelik öğrencilerin daha derinlemesine bilgi edinme ve edindiği kazanımları meslek yaşantısında kullanma beklentisi içinde oldukları tespit edilmiştir. Ayrıca dersin içeriğinin öğrenci beklentileri ve ders izlencesiyle örtüştüğü sonucuna ulaşılmıştır. Ek olarak dersin uygulama sürecinde işe koşulan yöntem ve tekniklerin lisansüstü düzeyde ve acil uzaktan öğretim sürecinde işlenen derse uygun olduğu belirtilmiştir. Son olarak, dersin ölçme-değerlendirme boyutunda gerek süreç, gerekse ürün değerlendirme yapıldığı ve bunun katılımcılarca olumlu karşılandığı söylenebilir.

Bu çalışma “Bireysel Yenilikçilik Ölçeği’’ni okul yöneticileri için uyarlayarak, geçerlik ve güvenirliğini test etmeyi amaçlamaktadır. Uyarlanan “Okul Yöneticileri Bireysel Yenilikçilik Ölçeği (OYBYÖ)” alanyazından bazı noktalarda farklılaşmıştır. 19 maddelik son form ölçek, 11 pozitif ve 8 negatif madde ve iki faktörlü yapıya sahiptir. Cronbach Alfa değerleri, Yeniliğe Açıklık ve Yeniliğe Direnç olarak isimlendirilen faktörler için 0.92, 0.88 ve tüm ölçek için 0.83’tür. Ölçeğin düzeltilmiş madde toplam korelasyon değerleri ve madde ortalama puanları arasındaki farkların anlamlılığı alt %27’lik ile üst %27’lik grupların madde ortalamaların ayırt edici ölçüm yaptıklarını göstermektedir. Doğrulayıcı Faktör Analizi sonucunda elde dilen modifikasyon yapılmış ölçek modelinde, uyum indeksi değerleri mükemmel, iyi ve kabul edilebilir düzeylerdedir. Hesaplanan χ2/sd oranı 1.23’tür. Bulgular, 19 maddelik OYBYÖ’nin okul yöneticilerinin bireysel yenilikçiliği ile ilgili algıların belirlenmesinde kullanılabilecek geçerli ve güvenilir bir ölçme aracı olduğunu göstermektedir. Okul yöneticilerinin bireysel yenilikçilik düzeylerinin tespit edilmesinin ve/veya ilişkili araştırmalarda OYBYÖ’nin kullanılmasının, eğitim yönetimi alanında okul yöneticilerinin bireysel yenilikçiliklerinin geliştirilmesine katkı sağlayacağı öngörülmektedir.

Science and Arts Centers are organizations to create environment, and opportunities for identified gifted and talented students to develop talents, and to create innovative products with scientific research knowledge. Educational management and supervision practices present critical contributions to the successful development and positive outcomes of educational organizations. To explore the current educational management and supervision practices of the Science and Arts Centers in Turkey, Strength, Weakness, Opportunity, and Threat (SWOT) analysis, and the needs analysis were conducted. Responses to a written survey with open-ended items were collected from 235 teachers, principals, and assistant principals during the 2018-2019 academic year. SWOT results identified the following: Strengths: Technological skills of the managers, and teachers; project-based education; Weaknesses: Lack of outdoor activities; lack of qualified managers; Opportunities: The Science and Arts Centers are the center for innovations; Threat: Lack of clarification of supervision criteria. The most important needs are as follows: Acquiring the educational and technological equipment, fairness of the managers, accountability and objectivity of supervision process. Recommendations are made for addressing key concerns of the results.

Amaç: Bu çalışmada Karasu Deresi’nde yaşayan Barbus cyclolepis Heckel, 1837 ve Gobio bulgaricus Drensky, 1926 türlerinin bazı büyüme özellikleri mevsimsel olarak incelenmiştir.Materyal ve Yöntem: Örnekleme mevsimlik olarak (Ağustos 2017, Kasım 2017, Ocak 2018, Şubat 2018, Nisan 2018) elektroşok aracılığıyla gerçekleştirilmiştir. Her mevsimi temsil edecek örneklemeler arka arkaya 3 gün tekrarlanmıştır. Elde edilen B. cyclolepis ve G. bulgaricus bireylerinin boy, ağırlık, yaş, eşey dağılımları, yaş-boy, yaş-ağırlık, boy-ağırlık ilişkileri ve Fulton kondisyon faktörü değerleri incelenmiştir.Bulgular: İncelenen B. cyclolepis bireyleri 0-III yaş gruplarındadır. Standart boy değerleri 3,5-13,5 cm; ağırlık değerleri ise 1,2232-50,8213 g arasında değişmiştir. Dişi:erkek oranı 1:0,94 olarak saptanmıştır. Tüm bireylerde; boy-ağırlık ilişkisi W= 0,0253*SL2,9226 olarak belirlenmiştir. Yaşa göre en düşük kondisyon faktörü değeri, III yaş grubunda (1,982) dişi bireylerde, en yüksek kondisyon faktörü değeri I yaş grubunda (2,288) erkek bireylerde bulunmuştur. G. bulgaricus türünün yaş dağılımı ise I-IV yaş grupları arasında değişmektedir. Standart boy değerleri 2,5-9,6 cm; ağırlık değerleri ise 0,2989-18,3014 g arasında değişmiştir. Dişi:erkek oranı 1:1,56 olarak saptanmıştır. Tüm bireylerde; boy-ağırlık ilişkisi W= 0,0209*SL3,0081 olarak belirlenmiştir. Yaşa göre en düşük kondisyon faktörü değeri, II yaş grubunda (1,950) erkek bireylerde, en yüksek kondisyon faktörü değeri IV yaş grubunda (2,191) dişi bireylerde bulunmuştur.Sonuç: Bu çalışma sonucunda Karasu deresinde yaşayan Barbus cyclolepis ve Gobio bulgaricus türlerinin kimi büyüme özellikleri ilk defa incelenmiştir., Objective: In this study, some growth characteristics of Barbus cyclolepis Heckel, 1837 and Gobio bulgaricus Drensky, 1926 species living in Karasu Stream, were investigated.Materials and Methods: Sampling was carried out seasonal (August 2017, November 2017, January 2018, February 2018, April 2018) via electroshock. Samplings representing each season were repeated for 3 consecutive days. Lenght, weight, age, sex distributions and ratios, age-length, age-weight, length-weight relationships, Von Bertalanffy parameters, Fulton condition factor values of the obtained B. cyclolepis and G. bulgaricus individuals were analyzed.Results: The examined B.cyclolepis individuals are in the 0-III age groups. Standard length values are 3.5-13.5 cm; The weight values varied between 1.2232-50.8213 g. The female: male ratio was determined as 1: 0.94. In all individuals; Length-weight relationship was determined as W= 0.0253*SL2.9226.According to age, the lowest condition factor value was found in female individuals in the III age group (1.982), and the highestcondition factor value was found in male individuals in the I age group (2.288).The age distribution of G. bulgaricus species varies between I-IV age groups. Standard length values are 2.5-9.6 cm; The weightvalues varied between 0.2989-18.3014 g. The female: male ratio was determined as 1:1.56. In all individuals; Length-weightrelationship was determined as W= 0.0209* SL3.0081. According to age, the lowest condition factor value was found in maleindividuals in the II age group (1.950), and the highest condition factor value was found in female individuals in the IV age group(2.191).Conclusion: As a result of this study, some growth characteristics of Barbus cyclolepis and Gobio bulgaricus species living inKarasu stream were investigated for the first time.

This research aims to examine the relationship between school principals' paternalist leadership behaviours and teacher autonomy. The research is a descriptive study in which causal comparison and correlational method are used together. 292 teachers were determined by using disproportionate sampling method. In this research, the Paternalist Leadership Behaviours Scale developed by Saylik & Aydin (2020), and the Teacher Autonomy Scale developed by Colak (2016) were used. As a result, it was revealed that school principals show moderate paternalist leadership behaviours according to teacher perceptions. It is concluded that there is a moderate and negative relationship between school principals' paternalist leadership approaches and teacher autonomy. As the paternalist leadership behaviours of school principals increase, teachers' autonomous behaviour decreases. Another result of the research is that there is a positive relationship between family atmosphere and benevolence dimensions and teacher autonomy.

Besides the output power and pulse frequency, the pulse duration of Er:YAG laser is an important parameter for conditioning the restorative material surface. This study aimed to investigate the eff...

This research aims to find out the current situation of the articles in terms of teacher training in gifted and talented education. The key words used are as follows: “gifted education”, “teacher training”, “teacher education” and limited to publications between 2000-2020. In the research, google scholar, TUBITAK ULAKBIM Dergipark, Council of Higher Education Thesis Center, ERIC were used as data base of this research. The researches which are inaccessible were left out of the scope. Each of the studies was examined according to aim, sample, methodology, and results using content analysis technique. This research is a meta-synthesis study. Four master and five doctorate dissertations, 21 articles, 30 in total, were included in the analysis. An extensive literature review was the focus of this research in order to access all the researches including the defined key words. At the end of the research, some suggestions were presented related to the conclusions.

Background. Enamel microabrasion can eliminate enamel irregularities and discoloration. This study evaluated the staining susceptibility of enamel after microabrasion using different clinical protocols. Methods. A total of 210 extracted bovine incisors were used in this study. The teeth were randomly divided into five groups of 42 teeth each (n=42), including group 1: control (no treatment), group 2: microabrasion, group 3: microabrasion + fluoride polishing, group 4: macroabrasion (fine-grit diamond bur) + microabrasion, and group 5: macroabrasion (finegrit diamond bur) + microabrasion + fluoride polishing. The groups were then randomly divided into two subgroups for discoloration procedures: coffee and distilled water (n=21). A spectrophotometric evaluation was carried out at baseline and on the 1st, 7th, 14th, and 28th days of the staining period. Statistical analyses were performed using repeated-measures ANOVA and the post hoc Bonferroni test at a significance level of 0.05. Results. The greatest color change was observed in group 2 specimens, which were immersed in coffee solutions. The color change values for groups 3, 4, and 5 specimens, which were immersed in distilled water, were higher than those in group 1 specimens (P

Pandemi Sırasında İnme Merkezi Kurmak: İlk Yıl DeneyimleriÖzet Amaç: Pandemi döneminde ülkemizde yeni açılan bir hastanenin Nöroloji Yoğun Bakım Ünitesi’ne, acil servise başvurarak yatırılan intravenöz trombolitik tedavi ve/veya mekanik trombektomi uygulanan iskemik inmeli hastaların verilerinin incelenmesi amaçlandı.Yöntemler: Ocak 2020-Aralık 2020 tarihleri arasında XXXXXX İnme Merkezi’nde akut iskemik inme tanısı ile yatırılan ve intravenöz trombolitik tedavi ve/veya mekanik trombektomi uygulanan ardışık 85 hastanın dosyaları retrospektif olarak incelendi.Bulgular: Hastaların ilk semptomdan kapıya kadar geçen süre (p, Establishing a Stroke Center During the COVID-19 Pandemic: First-year ExperiencesAbstractObjective: This study examines the data of patients of ischemic stroke who underwent intravenous thrombolytic therapy and/or mechanical thrombectomy after applying to the emergency department of a newly opened hospital in our country during the COVID-19 pandemic. Methods: The files of 85 consecutive patients who were hospitalized in the Stroke Centre of XXXXXX with a diagnosis of acute ischemic stroke between January and December 2020 who underwent intravenous thrombolytic therapy and/or mechanical thrombectomy were retrospectively reviewed. Results: Symptom-to-door times (p

Bu çalışmada Istranca Deresi’nde yaşayan tatlısu kefali [Squalius cephalus (Linnaeus,1758)] populasyonunun büyüme biyolojisi incelenmiştir. Mart 2012 ile Haziran 2013 tarihleriarasında dere üzerindeki 6 istasyondan aylık olarak elektroşok cihazı yardımıylaavcılık gerçekleştirilmiştir. Elde edilen S. cephalus bireylerinin boy, ağırlık, yaş, eşey dağılımlarıve oranları, yaş-boy, yaş-ağırlık, boy-ağırlık ilişkileri, von Bertalanffy parametreleri,fulton kondisyon faktörü değerleri incelenmiştir.Türün yaş dağılımının 0 ile VII yaş grupları arasında değiştiği gözlenmiştir. Total boy değerleritüm bireylerde 2,6-30,1 cm; ağırlık değerleri ise 0,14-352,50 g arasında değişmiştir.Dişi-erkek oranı 1:2,76 olarak saptanmıştır. Tüm bireylerde; boy-ağırlık ilişkisiW=0,0078TL3,15 olarak, von Bertalanffy büyüme parametreleri L∞, W∞, K ve t0 sırasıyla42,18 cm, 1023,97 g, 0,137 ve -0,576 olarak belirlenmiştir. Tüm bireylerde aylara görefulton kondisyon faktörü değeri en düşük 2013 Şubat ayında (0,908), en yüksek ise 2012Haziran ayında (1,222) bulunmuştur., In this study, growth biology of chub [Squalius cephalus (Linnaeus, 1758)] populationliving in Istranca Brook has been studied. Sampling was carried out monthly in 6 sites onthe stream by electrofishing between March 2012 and June 2013. Length, weight, age, sexdistribution and ratios, age-length, age-weight, length-weight relationships, von Bertalanffyparameters, fulton condition factor values of S. cephalus individuals were investigated.Age distribution of the species varied between 0 and VII. Total length and weight valuesof all individuals varied between 2.6-30.1 cm and 0.14-352.50 g respectively. The femalemaleratio was 1:2.76. Length-weight relationship and von Bertalanffy growth parametersin all individuals were determined as W=0.0078TL3.15 and L∞, W∞, K and t0 as 42.18 cm,1023.97 g, 0.137 and -0.576, respectively. Monthly fulton condition factor value in allindividuals was lowest in February 2013 (0.908) and highest in June 2012 (1.222).

This paper introduces the problem of location optimization of receivers for IoT-based infrastructures and its application to real-life case in Izmir, Bornova. The main goal of this study is to determine the optimal number of gateways and their locations in order that the gateway deployment and installation cost can be minimized while satisfying demand, capacity and coverage constraints. As a result, the problem is formulated as an Integer Linear Programming (ILP) model and the Multi Service Capacitated Facility Location Problem (MSCFLP) is considered. In order to determine number of candidate gateway locations, K-means algorithm is employed considering the exact locations of street lambs in Bornova as the potential location of gateways to install. A mathematical model is formulated and solved to determine the optimal number and locations of the gateways. In addition to exact model, Sequential Solving Heuristic method is also suggested to be able to solve the large size problems in a reasonable amount of computational time. Obtained results are demonstrated and compared. Furthermore, a decision support system is developed which employs the solution methodology.

Aim: Application of adhesive systems on dentin is a multistep, technique-sensitive procedure. Thus, the aim was to assess the effect of operator experience on the shear bond strength of an etch-and-rinse adhesive system and a self-etch adhesive system on dentin. Materials and Methods: Forty-eight extracted human molar teeth were used in the study. They were embedded in an acrylic resin after cutting off the roots. The mesial and distal enamels of the teeth were removed to expose dentin surfaces. The samples were allocated to four groups (n = 12): Group 1: restorative dentistry specialist with 13 years of experience, Group 2: with 6 years of experience, Group 3: postgraduate operator with 2 years of experience, and Group 4: undergraduate student with 1 year of experience and familiar with adhesive with systems. Each operator applied an etch-and-rinse adhesive system (Adper Single Bond 2) to mesial surface and a self-etch adhesive system (Clearfil SE Bond) to distal surface (n = 12). Then, a composite resin (Filtek Z250) was inserted with the aid of a plastic ring (2 mm 2 mm) and light polymerized. The specimens were stored in distilled water before shear bond strength test. A two-way ANOVA test was used for statistical analysis. Results: No statistically significant difference was found between each operator type with respect to etch-and-rinse adhesive system (P 0.05); however, the undergraduate student performed better than 2-year experienced operator with respect to self-etch system application (P 0.05). Conclusion: The shear bond strength of a self-etch system might vary according to the operator's experience. © 2020 Journal of Conservative Dentistry Published by Wolters Kluwer-Medknow.

This paper reviews the literature and recommends activities that can be used to teach English to gifted and talented students. It includes the responsibilities that teachers of the gifted and talented have in teaching the English language. Strategies for teaching the language in a natural and flowing way to increase intake and usage are also presented. Also discussed are the pressures on gifted and talented students when they are learning a new subject such as the English language and how these pressures occur because of beliefs about giftedness and how gifted learners learn. Teachers need to also be aware of the linguistic and cultural backgrounds of their students. This information can be used to help students speak English more naturally during informal talks/discussions in class about their different lifestyles and/or cultural features. The special and different learning characteristics of gifted students are important for their teachers to know. Teachers of gifted students should then use that knowledge when they differentiate curriculum. To be a teacher of these special children means being open to ongoing professional development and always focusing on the learner rather than the learning. Finally, the teachers of the gifted need to shift their approaches in order to become counsellors and guides more than instructors and directors of learning.

This paper analyses the articulation of the Responsibility to Protect (R2P) into Turkish foreign policy (tfp) during the Justice and Development Party (Adalet ve Kalkınma Partisi, akp) era. R2P has particularly become significant when the uprisings turned into full-scale civil wars in Libya and Syria. Therefore, this study examines tfp towards Libya and Syria in the framework of R2P. It argues that there is a close correlation between Turkey’s support of R2P and recently increasing emphasis on the normative foundations of its foreign policy in general. It also discusses that Ankara has appeared as an active advocate of the norm insofar as it adopted a more ambitious policy agenda, particularly in the context of the Syrian civil war. However, this paper concludes that, due to Turkey’s pragmatic approach, R2P has turned into a justification tool in the discourse of tfp makers for their regional aspirations.

ÖZET Amaç: Bu çalışmanın amacı, Başkent Üniversitesi Diş Hekimliği Fakültesi öğrencilerinin stres düzeylerinin belirlenmesi ve strese neden olan faktörlerin incelenmesidir.Materyal ve Metod: Çalışmaya katılan ve henüz mezun olmamış 2013-2014 akademik yılında okuyan öğrencilerden Modifiye Edilmiş Diş Hekimliği Çevresel Stres Anketi [Dental Environment Stress Questionnaire/DES]’ni cevaplamaları istenmiştir (n=186). Elde edilen veriler istatistiksel olarak analiz edilmiştir (p0,05).Sonuç: Yaptığımız bu çalışma diş hekimliği öğrencile- rinin stres düzeylerinin okudukları sınıf ve programın hangi aşamasında oldukları ile bağlantılı olduğunu göstermiştir.Anahtar Kelimeler: Stres, Diş Hekimliği EğitimiTHE EVALUATION OF PERCEIVED SOURCES OF STRESS IN DENTAL FACULTY STUDENTSABSTRACT Aim: The purpose of this study was to examine the stress sources and levels among dental students studying in Başkent University Faculty of Dentistry.Material and Method: The modified Dental Environment Stress (DES) questionnaire was administered to all undergraduate students during the 2013-2014 academic year (n=186). The data was statistically evaluated (p0.05).Conclusions: The study demonstrated that the sources of stress in dental students varied according to their studying year and the place in their dentistry program. Keywords: Stress, Dental Education

Amac: Bu calismanin amaci, Baskent Universitesi Dis Hekimligi Fakultesi ogrencilerinin stres duzeylerinin belirlenmesi ve strese neden olan faktorlerin incelenmesidir. Bireyler ve Yontem: Calismaya katilan ve henuz mezun olmamis 2013-2014 akademik yilinda okuyan ogrencilerden Modifiye Edilmis Dis Hekimligi Cevresel Stres Anketi [Dental Environment Stress Questionnaire/DES]’ni cevaplamalari istenmistir (n=186). Elde edilen veriler istatistiksel olarak analiz edilmistir (p 0.05). Sonuc: Yaptigimiz bu calisma dis hekimligi ogrencilerinin stres duzeylerinin okuduklari sinif ve programin hangi kisminda olduklari ile baglantili oldugunu gostermistir. Anahtar Kelimeler: Stres, Dis Hekimligi Egitimi

The aim of this research is to investigate the teachers’ emotional labour behaviours and to determine the reasons of the differences. In the research, mixed research methods including both quantitative and qualitative techniques were used. The population of the study was comprised of 280 teachers (266 for quantitative, 14 for qualitative dimensions) who work in Siirt city center. Because of the difficulties to reach the target population, time limitations and the cost over run, representative sampling was preferred. In order to investigate the teachers’ emotional labour behaviors, “Emotional Labour Behaviors Scale” which was adapted by Kaya (2009) was administered to the teachers in the study. This scale was adapted for educational field. For the quantitative dimension of the research, 266 scales were analysed by using percentage, means, frequency and standard deviation for descriptive statistical techniques. T-test, ANOVA tests were used for the differences among the variables. As a result of the research, findings indicated that there were significant differences in the teachers’ emotional labour behavior scores. The significant differences were found in the scores of the number of teachers, the working time at schools, the type of graduated faculty, and the type of the school. The questions related to the qualitative dimension of the research were asked to the teachers with different branches and gathered data were analysed using content analysis technique. According to the participant teachers opinions, the reasons for the significant differences of emotional labour behavior scores are different occupational definitions, being ready for the teaching profession, exhibiting more efforts and interest, more close relationships, and the negative effects of staying much more at school on the teachers. The participant teachers expressed their solutions as solving the teachers’ time and place problems, constituting more imteractive relationships among students and colleagues and preparing effective working schedule.

Microhybrid composite resins are commonly used to treat non-carious cervical lesions. The aim of this double blind study was to compare the 12-month clinical performance of cervical restorations placed with the use of two different microhybrid composite resins.20 patients with at least one pair of non-carious cervical lesion participated in this study. Ninety-seven cervical lesions were restored with either TPH Spectrum (n=48) or Filtek Z250 (n=49) using a two-step etchrinse adhesive (Single Bond 2) Restorations were evaluated using modified USPHS criteria after 6 and 12 months. The statistical comparison of resin composites for each category was performed with the Pearson chi square test and the performance of restorations at the baseline, 6 months and after 12 month recall time was evaluated by Mc Nemar's test (p0.05).The recall rate of the patients was 100% at each evaluation period. The retention rates were 100% at six months,89,6% and 91,8% at 12-months for TPH and Z250, respectively and no statistically significant difference was observed with respect to each evaluation criteria (p0.05).Cervical restorations placed with two different microhybrid composites and a two-step etches and rinse system showed satisfactory clinical performance after 12-months.

Statement of the problem Effect of bleaching procedures on staining susceptibility of resin restorative materials is still questionable. Purpose The aim of this study was to evaluate the staining susceptibility of restorative materials bleached with 20% carbamide peroxide home bleaching agent and subsequently immersed in coffee and tea. Materials and methods Forty-two disk-shaped specimens were fabricated for each of the resin composites (Filtek Supreme XT [3M ESPE, St. Paul, MN, USA], Ceram-X Mono [Dentsply, Konstanz, Germany], and Aelite All Purpose Body [BISCO, Inc., Shaumburg, IL, USA]). The baseline color values were measured with a spectrophotometer. The specimens of each restorative material were randomly divided into two groups (N = 21). While the first group specimens were stored in distilled water (nonbleaching group-control), bleaching agent (Opalescence PF 20% [Ultradent Poducts, South Jordan, UT, USA]) was applied on the top surface of each specimen of the second group (bleaching group). After color change values were measured, the specimens were randomly divided into three subgroups (N = 7) according to the staining solutions. The color change values (DeltaE*ab) were calculated and the data were subjected to analysis of variance. Statistical significance was declared if the p value was 0.05 or less. Results There was no statistically significant difference within each restorative material's DeltaE*ab values after bleaching (p = 0.714). Also, the staining solutions did not cause a statistically significant difference between DeltaE*ab values of bleaching compared with nonbleaching groups (p = 0.146). Significant interaction was found only between restorative materials and staining solutions (p = 0.000). Conclusion Bleaching of the tested resin composites did not increase their susceptibility to extrinsic staining in vitro. CLINICAL SIGNIFICANCE Bleaching did not affect staining susceptibility of the tested resin composite restorative materials. (J Esthet Restor Dent 21:407-415, 2009).