Diş Hastalıkları ve Tedavisi Ana Bilim Dalı

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https://hdl.handle.net/20.500.13055/786

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  • Küçük Resim
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    Evaluation of enamel surface roughness and volumetric change after resin remnant removal following orthodontic bracket debonding
    (Quintessence Publishing Deutschland, 2025) Korkut, Bora; Uzun, Kadir Emre; Hacıali, Çiğdem; Ünal, Tuna; Tağtekin, Dilek
    Purpose: To evaluate surface roughness and volumetric change of enamel after using different resin remnant removal (RRR) techniques, following orthodontic bracket debonding. Materials and Methods: Metal orthodontic brackets (Mini Twin Brackets, RMO) were bonded to 60 human (central or lateral) labial mid-third surfaces, and debonded 24 h after by a single orthodontist. The remaining composites were completely removed with the fluorescence light guidance by the D-Light-Pro led curing unit (GC/detection mode). The removal procedures were performed without magnification (n = 30) or with 20× magnification/5500 K illumination by a dental microscope (OMS2000, Zumax) (n = 30). Three RRR techniques were used: 12-bladed carbide bur (Horico), red-banded diamond bur (Horico), SofLex Disc (medium/40 μm, fine/24 μm, and superfine/8 µm; 3M). Surface changes were evaluated visually through microscope photographs by enamel surface index (ESI) and volumetrically by overlapping the three-dimensional images of a laser scanner device (LAS-20, SD-Mechatronik) in the Geomagic Design X (3D Systems) software. The deemed significance was set at 0.050 for the statistical analyses. Results: A positive, strong correlation was found between visual and volumetric change scores (P 0.001). Lesser volumetric loss (P 0.001) and roughness (P = 0.009) were observed for all RRR techniques when the magnification was used. Volumetric loss (mm3) by diamond bur was significantly the highest [1.85(1–3)a], followed by SofLex Disc [1.1(1–1)c] and carbide bur [0.59(0–1)b](P 0.001). Visual surface roughness scores (Ra) were significantly higher for diamond bur [4.5(4–5)b](P 0.001), followed by carbide bur 2(1–3)a and SofLex Disc 1(1–2)a. Conclusion: Surface roughness should always be assessed together with the volumetric enamel loss for the selection of RRR technique. Red-banded diamond bur should not be used for RRR. Even though the least surface roughness can be provided by SofLex Disc system, it can provide more intact enamel surface loss than the carbide bur. Magnification was considered useful for the RRR to provide a smoother surface while better preserving the intact enamel tissue.
  • Küçük Resim
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    Oral health-related attitude, knowledge and behavior among dentistry, medicine and pharmacy students: A cross-sectional study
    (Turkiye Klinikleri Yayınevi, 2025) Yıldız, Mehmet Selim; Mert Eren, Meltem; Gürcan, Aliye Tuğçe
    Objective: There is lack of sufficient published data in Türkiye to describe and compare the knowledge and attitudes of students from various faculties regarding their oral healthcare. Aim of this research was to assess and compare self-reported attitudes, knowledge, and behaviors related to oral health among cohort of dentistry, medicine, and pharmacy students, with purpose of increasing awareness of oral and dental health among participants themselves and indirectly within their social circles. Material and Methods: This cross-sectional study included 354 preclinical students from the faculties of dentistry (n=127), medicine (n=113), and pharmacy (n=114). 28-question survey adapted from previous studies assessed oral health attitudes, knowledge, and behaviors. Survey was administered during scheduled class hours to ensure high response rate and consistent participation. Data were summarized using descriptive statistics, with Kolmogorov-Smirnov test applied to assess distribution, and KruskalWallis, Mann-Whitney U, chi-square tests used for group comparisons. Results: Satisfaction with teeth colour and appearance of smiles in photographs showed similar results across all groups. Female students exhibited significantly higher sensitivity towards daily brushing, flossing, and mouthwash usage, while male students were more inclined towards smoking (p<0.05). Dentistry students, in particular, demonstrated clear preference for sugarfree chewing gum. Brushing technique held greater importance for dentistry participants compared to other groups. Additionally, individuals with knowledge about interdental cleaning aids were more prevalent in dentistry group. Conclusion: The finding that awareness among dentistry students is higher than that of students from other faculties is noteworthy, as dentistry students receive coursework in the same field.