Publications by authors named "R Dumitrescu"

: Stress is a significant issue among dental students, with both psychological and physiological impacts affecting their academic performance. This cross-sectional study aimed to explore the relationship between academic stress and salivary biochemical markers, specifically cortisol and total antioxidant capacity (TAC), in third- and fifth-year dental students during the 2022/2023 academic year. : This study included 44 participants from the Faculty of Dental Medicine at Victor Babes University, Romania.

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Individuals with dark personality traits are more prone to burnout, but this was not yet investigated in academia. Perfectionistic self-presentation (PSPS), an interpersonal expression of perfectionism, could be an explaining factor. Therefore, we investigated the relationship between the dark triad (Machiavellianism, vulnerable and grandiose narcissism, and psychopathy) and academic burnout, and whether the PSPS total score and its dimensions (perfectionistic self-promotion, nondisplay of imperfection, and nondisclosure of imperfection) mediates this.

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Article Synopsis
  • The study assessed how common drinks like coffee, red wine, and Coca-Cola affect the staining sensitivity and surface integrity of three types of composite resins used in dentistry.
  • Specimens made from Herculite Ultra XRV, G-ænial A'CHORD, and Omnichroma were analyzed after being submerged in these beverages for 10 days, revealing significant surface and elemental changes, especially with Coca-Cola.
  • Results showed that each beverage caused varying degrees of discoloration, with Coca-Cola causing the most noticeable color change in Herculite Ultra XRV, while red wine most affected G-ænial A'CHORD, and coffee was most detrimental to Omnichroma.
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Dental restorations must replicate the natural appearance of teeth while ensuring biocompatibility and durability. This study evaluated the surface characteristics and color stability of three dental composites-Herculite Ultra XRV, G-ænial A'CHORD, and Omnichroma-exposed to acidic beverages (red wine, black coffee, and Coca-Cola). Sixty disk-shaped specimens were prepared, polished, and immersed in these beverages.

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Few theoretical and empirical works have described impostor phenomenon (IP) and no study explored impostorism from a dark perspective. We adopted a person-centered approach to identify clusters of impostors based on scores on the IP, perfectionistic self-presentation and the Dark Triad using a sample of 306 university students (M = 22.82).

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