İstanbul Galata Üniversitesi Kurumsal Akademik Arşivi
DSpace@Galata, İstanbul Galata Üniversitesi tarafından doğrudan ve dolaylı olarak yayınlanan; kitap, makale, tez, bildiri, rapor, araştırma verisi gibi tüm akademik kaynakları uluslararası standartlarda dijital ortamda depolar, Üniversitenin akademik performansını izlemeye aracılık eder, kaynakları uzun süreli saklar ve telif haklarına uygun olarak Açık Erişime sunar.
Güncel Gönderiler
Effect of Total Occlusal Convergence Angle and Rounded Preparations on the Marginal and Internal Fit of Incisor Monolithic Zirconia Crowns
(Quintessence Publishing USA, 2026) Özkurt Kayahan, Zeynep; Blatz, Markus B.; Emre Özden, Yunus; Çopuroğlu, Akanay; Silahtar, Esra; Kazazoğlu, Ender
Purpose: To evaluate the marginal and internal fit of anterior monolithic zirconia crowns fabricated over preparations with different total occlusal convergence (TOC) angles with and without a rounded incisal design. Materials and Methods: Crown preparations of 14 maxillary central incisors were digitally designed and fabricated using photosensitive resin. The crowns were designed with axial wall inclinations of-8,-4, 0, 8, 12, 16, and 22 degrees with and without rounded incisal corners and a 1-mm-wide chamfer-type finish line. Monolithic zirconia crowns (n = 10) were milled and assessed for fit using the dual-scan technique using an intraoral scanner. The STL files were analyzed in Geomagic Control X, measuring fit at 100, 150, and 175 points on the incisal, axial, and marginal areas, respectively. Data normality was tested (Shapiro-Wilk), and TOC angle groups were compared using one-way ANOVA, Levene test, Tukey HSD, and independent samples t tests (P < .05). Results: TOC angle groups showed statistically significantly differences (P < .001). The 22-degree preparation had the lowest marginal discrepancies (36 +/- 5 pm rounded, 61 +/- 5 pm nonrounded), while -8 degrees had the highest (117 +/- 9 pm rounded, 147 +/- 30 pm nonrounded). Axial discrepancies were lowest at 22 degrees (77 +/- 14 pm) and highest at -8 degrees (208 +/- 52 pm) in nonrounded samples (P< .001). The smallest incisal discrepancy was found in 22 degrees (95 +/- 13 pm), while the largest (163 +/- 31 pm) was at -4 degrees in the nonrounded groups (P < .001). Conclusions: TOC angle and rounded preparations have a significant impact on the fit of CAD/CAM-milled monolithic zirconia crowns. Rounded incisal corners and preparations with higher TOC angles increased marginal and internal adaptation of the crowns.
The relationships among workplace bullying, organizational commitment, and quiet quitting among physical education professionals
(Campus Educa Sports SL, 2026) Korkmaz, Murat; Demir, Bülent; Başaran, Reyhan; Yücel, Ali Serdar; Kuyucu, Mihalis Michael
Workplace bullying is a significant organizational risk for sports education institutions. It can deplete employees’ psychological resources and weaken their organizational commitment, which may lead to an increase in quiet quitting. This study examined the levels of workplace bullying, organizational commitment, and quiet quitting among sports education employees. Additionally, the measurement properties of these three constructs and the relationships among them were evaluated. A total of 550 participants took part in this cross-sectional and correlational study. Data were collected using a 39-item, five-point Likert-type scale. There were 13 items in each dimension. Internal consistency was examined using Cronbach’s alpha and McDonald’s omega coefficients. Confirmatory factor analysis based on weighted least squares estimation was conducted to assess construct validity. The mean scores were 2.92 ± 0.71 for workplace bullying, 3.17 ± 0.60 for organizational commitment, and 2.26 ± 0.67 for quiet quitting. The alpha coefficients ranged from 0.913 to 0.932. The three-factor model showed an excellent fit (χ²/df = 1.037; CFI = 0.998; TLI = 0.997; RMSEA = 0.008; SRMR = 0.029). There is a positive relationship between workplace bullying and quiet quitting (r = 0.602; p < 0.001). The relationship between workplace bullying and organizational commitment is negative (r = −0.481; p < 0.001). A negative relationship was also found between organizational commitment and quiet quitting (r = −0.461; p < 0.001). All three scores varied by type of organization. Workers at sports clubs or educational centers experience higher levels of workplace bullying and quiet quitting. Organizational commitment, however, is lower among them. Only the quiet quitting score differed based on length of service. The findings indicate that quiet quitting is not merely an individual choice. Organizational conditions also play a role in this behavior.
An Analysis of Ritwik Ghatak’s Bari Theke Paliye From the Perspective of Exile, Childhood, and Architecture
(University of Pittsburgh, 2026) Yıldız, Ersan
This article examines Ritwik Ghatak’s Bari Theke Paliye (1959) through childhood, displacement, and the built environment. Through qualitative close analysis of domestic interiors, streets, bridges, and encounters, it asks how a child’s changing sense of place reveals urban inequality. Kanchan’s voluntary flight from his village differs from Partition-era forced migration, yet his encounters with displaced adults connect the journey to histories of lost livelihoods and belonging. The film contrasts the city’s promise of freedom with precarious work, anonymity, and collective violence. Architecture emerges as an active force that can discipline, shelter, exclude, or enable connection; home and city remain ambivalent rather than fixed opposites
Social Media Addiction Dimensions, Sleep Disturbances, and Cumulative GPA Among Undergraduate Students: A Cross-sectional Study
(2026) Nas, Sevil; İçöz, Rümeysa Özçalkap
To examine the relationships among social media addiction, sleep quality, and academic performance in university students. This cross-sectional study included 199 university students. Data were collected using a sociodemographic questionnaire, the Social Media Addiction Scale (SMAS), the Pittsburgh Sleep Quality Index (PSQI), and cumulative grade point average (GPA) verified from official academic transcripts. Pearson correlation and multiple linear regression analyses were performed. Most participants (61.8%) used social media for 3–5 hours daily. Total social media addiction was not associated with global sleep quality or cumulative GPA (p >.05). Sleep disturbance was negatively correlated with cumulative GPA (r = −.20, p =.004) and remained independently associated with cumulative GPA in the multivariable analysis (β = −.166, p =.015). Interference with daily life/loss of control was also negatively associated with cumulative GPA (β = −.295, p =.005), whereas deprivation showed a positive adjusted association (β =.247, p =.019). Female students had significantly higher GPAs than male students (p <.001). Sleep disturbance and impaired behavioral control, rather than overall social media addiction, were associated with lower cumulative GPA. © The Author(s), under exclusive licence to Springer Nature Switzerland AG 2026.
Knowledge, attitudes, and practices regarding digital dentistry among Turkish dentists: a cross-sectional study
(Nature Portfolio, 2026) Dokumacıgil, Gökhan; Dokumacigil, Nur Kodaman; Kargül, Betül
Digital technologies are increasingly integrated into dental practice, yet their adoption may vary according to professional and institutional factors. This cross-sectional study evaluated dentists’ knowledge, attitudes, and practices (KAP) regarding digital dentistry and factors associated with clinical adoption in Turkiye. A total of 225 dentists completed an online questionnaire. Mean knowledge, attitude, and practice scores were 11.2±4.1, 24.4±2.7, and 12.2±5.3, respectively. Public hospital dentists demonstrated lower knowledge and practice scores, while practice scores were also lower among university hospital dentists than among those working in private-sector settings. Knowledge and attitude were positively correlated with practice (ρ=0.311 and ρ=0.250, respectively; both p<0.001). In multivariable analyses, male sex, older age, and private clinic/corporate dental chain employment were independently associated with higher practice scores, whereas public hospital employment was independently associated with lower practice scores. Overall, favourable attitudes towards digital dentistry did not consistently correspond to clinical adoption, indicating differences between attitudes and reported clinical practice. These findings highlight associations between professional and practice-setting characteristics and the clinical use of digital technologies.
