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    Evaluation of tooth-fragment reattachment: a clinical and laboratory study
    (Wiley-Blackwell, 2010) Yilmaz, Yucel; Guler, Cigdem; Sahin, Hakan; Eyuboglu, Ozge
    Purpose: To evaluate the restoration of fractured teeth by reattaching tooth fragment to its tooth remnant in a group of children and adolescents, and to compare the results with those of a laboratory study. Materials and Methods: The clinical study was conducted on 43 fractured incisors: 22 uncomplicated crown fractures (Group A) and 21 complicated crown fractures (Group B). The 43 incisal fragments: 23 were kept dry for 47 h and 20 were kept wet for 24 h by the patients before they were reattached. The fragments were kept in 0.9% saline solution for 30 min before reattachment. The fragments in Group A were reattached using a dentin bonding agent, a flowable and a hybrid resin composite, whereas the fragments in Group B were reattached to the tooth remnant after a pulpotomy was performed. The laboratory study was conducted on 56 extracted incisors. Teeth were divided equally into four groups: Group I - Uncomplicated crown fracture + wet medium; Group II - Uncomplicated crown fracture + dry medium; Group III - Complicated crown fracture + wet medium, and Group IV - Complicated crown fracture + dry medium. The fragments were then reattached in a manner that was similar to that used in the clinical study. The restored teeth were then re-fractured. All data were analyzed statistically. Results: In the clinical study, the restored teeth were followed up for 2 years. Neither the type of trauma nor the storage medium had any significant effect on the survival, color, and bond strength of the restored teeth when assessed in the clinical and laboratory study. The color disharmony that was encountered initially in restored teeth resolved significantly on its own accord within 12 months after reattachment of the fragment. Conclusion: Fragment reattachment can be used to treat fractured teeth successfully in children and adolescents.
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    Neutrophil-lymphocyte ratio and severity of atherosclerotic disease in stable coronary artery patients with chronic total occlusion
    (2021) Yilmaz, Yucel
    Aim: Neutrophil-to-lymphocyte ratio (NLR) is a marker of systemic inflammation that correlates with coronary artery disease. The Syntax score is an angiographic tool used in grading the complexity of coronary artery disease (CAD). The aim of this study is that NLR is associated with a greater CAD complexity in patients with stable angina pectoris with chronic total occlusion.Materials and Methods: A total of 495 patients who underwent coronary angiography and who had stable angina pectoris with chronic total occlusion in at least 1 vessel were included in the study. The syntax score was used to determine coronary complexity.Results: Patients with CAD were evaluated by grouping according to 2 different criteria as pointed in the European Society of Cardiology (ESC) revascularization guide. When the syntax S is divided into 3 groups (Syntax score 1-22, 23-32,> 32) according to their score values, or 2 groups (Syntax score 1-21 and> 22 or 1-31 and> 31) according to their Syntax score values, NLR was higher in high Syntax score groups than in low groups (p 32) or 2 groups according to Syntax score values (Syntax score 1-21 and >22 or 1-31 and >31) as pointed in ESC revascularization guideline, high Syntax score group having a higher NLR than low group (p0.05). However, when the patients were divided into 3 groups according to the Syntax score, it was seen that there was no statistical difference in terms of NLR values between the high group and the middle group or the middle group and the low group of the Syntax score.Conclusion: In this study, it has been demonstrated that NLR can be used for the determination of the complexity of the disease in patients with stable angina pectoris with chronic total occlusion. However, in determining the degree of complexity in the patients with stable angina, discrimination of the patients close to each other may not be sufficient.