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- MakaleYayıncıda açık erişim2026Scopus SJRQ2Influence of activation systems on the removal and apical extrusion of a bioceramic intracanal medicament in immature teeth: an in vitro study
Kaşıkçı, Sena; Şirinoğlu, Ebru
Purpose This study aimed to evaluate the effects of passive ultrasonic irrigation (PUI) and sonic activation (SA) on apical extrusion and the removal efficacy of bioceramic (BC), and calcium hydroxide (CH) based intracanal materials in simulated open-apex teeth. Materials and Methods Thirty-two extracted mandibular canines were prepared according to ISO #140, and an open-apex condition was created by apical resection. Specimens were randomly assigned to bioceramic (Bio-C Temp) and CH (DiaPaste) intracanal medication groups and subdivided among PUI or SA methods (n = 8). Extruded intracanal medicament was collected in pre-weighed tubes, and residual medicament was scored under a microscope. Residual intracanal medicament was evaluated using a four-grade scoring system. Normality was assessed using the Shapiro–Wilk test; group comparisons were performed with the Kruskal–Wallis test and Dunn’s posthoc test, with significance set at p<0.05. Results Apical Extrusion values were as follows: Group BC-PUI = 0.048 mg, Group BC-SA = 0.036 mg, Group CH-PUI = 0.052 mg, and Group CH-SA = 0.049 mg. No significant difference was observed in apical extrusion among the groups (p = 0.265). Median residual scores were Group BC-PUI = 0.5, Group BC-SA = 3, Group CH-PUI = 0.5 and Group CH-SA = 1. PUI resulted in significantly lower residual medicament scores than SA (p = 0.002). Conclusion Bio-C Temp demonstrated superior removal and apical extrusion characteristics were comparable to CH. These findings support its potential as a reliable alternative to CH.
- Derleme MakaleAçık Erişim2025Scopus SJRQ2Advancements in the MRI technology for identification of dentomaxillofacial pathologies
Öçbe, Melisa
The high-resolution imaging capabilities of Magnetic Resonance Imaging (MRI) make it highly suitable for visualizing a wide range of dentomaxillofacial pathologies, including tumors, inflammatory conditions, and vascular abnormalities. This review focuses to the role of MRI in imaging head and neck pathologies, highlighting its advantages over traditional radiodiagnostics in dentistry. MRI's ability to detect periapical lesions, differentiate between various cysts and tumors, and assess the characteristics of odontogenic and non-odontogenic lesions is discussed. Special consideration is given to the differentiation of odontogenic keratocysts and ameloblastomas, as well as the evaluation of odontogenic fibromas and myxomas using dynamic contrast-enhanced MRI. Additionally, the review explores the potential of diffusion-weighted imaging (DWI) and apparent diffusion coefficient (ADC) values in distinguishing benign from malignant lesions, emphasizing the significance of these techniques in characterizing salivary gland tumors. Future advancements in MRI technology, including the application of high-field MRI and radiomics, are also considered. Radiomics, driven by artificial intelligence, offers a promising approach to extracting quantitative features from medical images, potentially enhancing the accuracy of diagnosis and prognosis in oral cancer. The review concludes by underscoring the transformative impact of MRI in dentomaxillofacial radiodiagnostics, advocating for its broader adoption in clinical practice to improve diagnostic accuracy and patient outcomes.
AtıfScopus1WoS6OpenAlex1
İncele - Derleme MakaleAçık Erişim2025Scopus SJRQ2The evolving role of MRI in dentomaxillofacial diagnostics: a comprehensive review
Öçbe, Melisa
Magnetic Resonance Imaging (MRI) has emerged as a pivotal diagnostic tool in dentomaxillofacial radiology, surpassing conventional imaging techniques by offering superior contrast resolution for soft tissue lesions without the use of ionizing radiation. This comprehensive review explores the expanding applications of MRI in dentistry, highlighting its integration into routine diagnostic protocols and its significance in the evaluation of oral and maxillofacial structures. The article delves into the physics of MRI, detailing the various sequences such as Spin Echo (SE), Gradient Echo (GRE), and Short-Tau Inversion Recovery (STIR), each tailored for specific diagnostic needs. Advanced techniques like Dynamic Contrast-Enhanced MRI and Diffusion-Weighted Imaging (DWI) are discussed for their roles in assessing tissue perfusion and differentiating between benign and malignant lesions. The review emphasizes the necessity of appropriate coil selection and parameter optimization to enhance image quality, particularly in dental applications where artifacts from restorative and prosthetic materials can pose challenges. Furthermore, the article addresses the utility of MRI in visualizing dental hard tissues, the temporomandibular joint, and neurovascular structures, providing a comprehensive overview of its diagnostic capabilities. The integration of MRI into global health systems and the role of Personal Electronic Health Records in reducing redundant imaging are also examined. Conclusively, the review underscores the transformative impact of MRI on dentomaxillofacial diagnostics, advocating for its broader adoption in clinical practice to facilitate accurate diagnosis and effective treatment planning.
AtıfScopus8OpenAlex4İncele - MakaleAçık Erişim2025Scopus SJRQ2Evaluation of color stability of CAD/CAM materials polished with different systems
Bilgin, Selen Bozkaya; Tekçe, Neslihan
Purpose The objective of this study was to investigate the color changes of various computer-aided design/computer-aided manufacturing (CAD/CAM) materials polished with different polishing systems and immersed in various colored drinks. Materials and Methods Three different resin-based CAD/CAM blocks (Cerasmart, Coltene Brilliant Crios, and SHOFU Block HC) were utilized. A total of 540 CAD/CAM blocks were prepared with a thickness of 2 mm and categorized into three main groups based on the polishing systems employed. The Sof-Lex, Identoflex, and Coltene Diatech polishing systems were administered to the materials. Subsequently, the specimens were further subdivided into three subgroups and immersed in three different colored solutions for one hour twice a day for 15 days. Filter coffee, cola, and distilled water served as the coloring agents. Color measurements were conducted at baseline and on Days 1, 7, and 15 using the VITA Easyshade compact spectrophotometer device. Results By the end of Day 15, Cerasmart specimens exhibited the least color change when immersed in coffee and distilled water, whereas Coltene specimens demonstrated the least color change when subjected to cola. Irrespective of the CAD/CAM blocks and polishing systems utilized, a statistically significant difference was observed among the beverages (p<0.001). Particularly, coffee induced a more pronounced color change compared to the other beverages (p<0.001). Conclusion The ΔE value increases proportionally with the duration of immersion in colored drinks. Specimens immersed in coffee displayed the highest color change for each CAD/CAM material.
AtıfScopus2WoS2İncele - MakaleAçık Erişim2023Effect of Chronic Unpredictable Mild Stress on Hippocampus and Serum Markers in Rats
Yener, Mehmet Deniz; Colak, Tuncay; Ozbek, Sema Kurnaz; Ceylan, Sureyya; Acar, Esra; Kir, Hale Maral
Objective: Unpredictable stress is a common factor that we encounter in our daily lives. In this context, we wanted to investigate the morphological effects of a chronic unpredictable mild stress (CUMS) model on rat hippocampus and serum levels of brain derived neurotrophic factor (BDNF) and glial fibrillary acidic protein (GFAP). Materials and Methods: This study was carried out on 16 Wistar albino rats which were divided into control and experiment groups. The CUMS model protocol was applied, and the morphological structures of the hippocampus were examined. The serum GFAP/BDNF levels were measured by ELISA method. Results: The mean BDNF level was 1.65 ± 0.17 ng/mL in the control group and 2.25 ± 0.29 ng/mL in the CUMS group. The mean GFAP level was 3.04 ± 0.45 ng/mL in the control group and 2.96 ± 0.58 ng/mL in the CUMS group. When the polymorph cell layer (PCL) in gyrus dentatus was examined; the mean number of cells in the control group was 20 ± 1.38 for the left PCL and 17 ± 1.35 for the right PCL. In the stress group; the mean number of cells in the polymorph cell layer of gyrus dentatus was 27 ± 2.08 cells for the left side and 23 ± 2.01 for the right side. Conclusions: As a result, morphological changes were observed in the gyrus dentatus region which has an important role in memory formation. The cells in the polymorph cell layer of gyrus dentatus underwent changes under stress.
AtıfScopus1OpenAlex1İncele - DergiEuropean Oral Research
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