This study aims to conduct a comparative evaluation of the accuracy, reliability, quality, and readability of chatbot-generated responses from five widely

Background. Aesthetic expectations have increased the use of aesthetic materials in dentistry. Lithium disilicates are frequently used materials for these expectations. Bleaching is another method used to provide aesthetics. Bleaching processes on restorative materials are not fully known. This study investigated the effect of at-home and in-office bleaching methods on the color change, surface roughness, and topography of lithium disilicate glass-ceramic materials produced with two different techniques and subjected to different polishing procedures. Methods. A total of 144 disc-shaped pressed and computer-aided design (CAD) lithium disilicate glass-ceramic specimens were randomly divided into four groups. Glazing and three different chair-side polishing procedures were performed. The specimens in each group were randomly divided into two groups and subjected to at-home and in-office bleaching processes (n=9). The home bleaching process was repeated with 16% carbamide peroxide agent for six hours for seven days, while the in-office bleaching process was applied with 40% hydrogen peroxide agent for two sessions of 20 minutes. After the bleaching processes, the final color and surface roughness experiments of the specimens were carried out, and the results were recorded. ANOVA and Tukey multiple comparison tests were used FOR the statistical analysis of the data (α=0.05). Results. The material*polish*bleaching, polish*bleaching, material*bleaching, and material*polishing interactions were not statistically significant regarding color and roughness changes of both specimens (P>0.05). Conclusion. Both bleaching processes can be safely applied to lithium disilicate glass-ceramic materials.

Understanding the relationship between clinical anxiety and self-confidence in dental education is crucial for enhancing students’ perceptions of pro

Background. Illness, social isolation and loneliness may cause different psychological problems in the ge-riatric population, including depression and anxiety. Factors such as anxiety and fear can negatively affect dental treatment processes and prognoses. Thus, in terms of dental approach to geriatric individuals, it is important to be aware of the emotional processes the elderly may have experienced during the pandemic.Objectives. This study aimed to determine the relationship between the geriatric anxiety levels and the coronavirus disease 2019 (COVID-19) anxiety and fear levels in the geriatric population.Material and methods. In this correlational study, 129 geriatric individuals were selected through the convenience sampling method. To gather the data, the Geriatric Anxiety Scale (GAS), the COVID-19 Anxiety Scale (CAS), the COVID-19 Fear Scale (CFS), and a questionnaire assessing demographic variables were used. Simple linear regression and Pearson's correlation coefficients were used to evaluate the relationships between the variables.Results. The sample consisted of 70.5% males and 29.5% females aged >= 65 years. The GAS total score (15.64 +/- 9.34) and its 3 subscale scores were strongly correlated with the CAS and CFS scores. The GAS total score and its subscale scores had a significant linear regression with both the CAS and CFS scores (p < 0.001).Conclusions. An increase in the anxiety and fear levels associated with the pandemic was observed in geriatric individuals. Thus, it should be considered that geriatric individuals may encounter some difficul-ties during dental treatment and prosthetic rehabilitation after the pandemic. Therefore, it is important to normalize the anxiety levels with the help of professionals, and to implement interventions such as socialization, physical activity and meditation to help balance the anxiety levels.

Dental education in Türkiye has expanded rapidly, with new faculties established and increased student quotas. This growth may influence educational quality and student satisfaction. If this influence proves detrimental, the quality of public healthcare services may decline, or there may be a lag behind international standards. This study aimed to compare undergraduate students' satisfaction levels at long-established versus newly established dental faculties in Türkiye. A cross-sectional, multi-center survey was administered to undergraduate dentistry students (n = 828) from long-established (≥ 10 years) and newly established (<;10 years) faculties. Data were collected online using a two-part questionnaire comprising demographics and a 30-item Likert-type scale evaluating satisfaction with quality of educational programs, physical facilities, integration of modern technologies, evolving patient demographics, clinical experiences and professional outlook. Statistical analyses, including Pearson's Chi-Square and Fisher's Exact tests, were used to examine the relationships between student demographics and satisfaction variables. A total of 828 students participated (65.9% (n = 546) from long-established, 34.1% (n = 282) newly established faculties). Most were in their first or second grade, with 61.8% (n = 512) female. Across both faculty types, key reasons for choosing dentistry included professional satisfaction (32.9% (n = 272)) and societal prestige (26.2% (n = 217)). Significant differences were observed between long-established and newly established faculties regarding perceptions of theoretical course content, sufficiency of clinical experience, international competitiveness of the curriculum, adequacy of physical facilities, and overall university satisfaction (p < 0.05). Students from long-established faculties generally reported more favorable ratings in these domains. A notable proportion of students (34.9% (n = 289)) expressed concern about the future of the profession, with differences in worry levels observed between the faculty types (p < 0.05). Students in long-established faculties reported higher satisfaction across multiple domains, potentially reflecting more developed infrastructures and greater academic expertise. These findings highlight the importance of enhance physical resources, technological capacities, and clinical opportunities-particularly in newly established institutions. Strengthening these aspects may enhance student satisfaction and better prepare future graduates for the evolving demands of dental practice. Furthermore, fostering international accreditation and collaboration could support ongoing improvements in educational quality across all dentistry faculties in Türkiye.

Dijital Ölçü Sistemleri ve Ağız İçi Tarayıcılar Zeynep YEŞİL Nihan KAYA Diş Hekimliğinde Kullanılan Ağız İçi Tarayıcı Sistemleri Mustafa AYATA Diş Hekimliğinde Renk Seçimini Etkileyen Faktörler ve Renk Sistemleri Mustafa AYATA Diş Hekimliğinde Cad-Cam ile Üretilen Dijital Tam Protezler ve Üretiminde Kullanılan Sistemler Aybüke KARA Ayşe RENÇBER KIZILKAYA Polietereterketon Polimeri ve Uygulanan Yüzey İşlemleri Emel ARSLAN İpek ÇAĞLAR Subperiostal Dental İmplantlar ile Protetik Tedaviler İpek ÇAĞLAR Büşranur DEMİR Protetik Diş Hekimliğinde 3D Yazıcıların Kullanımı Seçil ÖZKAN ATA Protetik Diş Hekimliğinde Güncel Yaklaşımlar Başak TOPDAĞI