13 results on '"Uzel T"'
Search Results
2. Evaluation of inter-maxillary fixation techniques for multi-piece Le Fort I osteotomies using finite element analysis.
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UZEL, T., YILMAZ, Z. CUKUROVA, and OZEL, A.
- Abstract
OBJECTIVE: A strong postoperative occlusal relationship is essential for the long-term stability of the jaw relations post orthognathic surgery. In multi-piece Le Fort I osteotomy, obtaining a satisfactory inter-maxillary fixation (IMF) of the mobilized segments in the correct position and according to the preoperative plan is difficult. Herein, we aimed to evaluate three different IMF techniques (tooth-supported, bone-supported, or hybrid IMF) using finite element analysis (FEA) of the occlusal surfaces of four models: three multi-piece (lateral incisor-canine, central incisor-central incisor, and canine-first premolar) and a single one-piece Le Fort I osteotomy scenario. MATERIALS AND METHODS: Three different IMF techniques were applied separately to three different multi-piece models and a single one-piece Le Fort I model designed using related software. Simulation brought the lower and upper jaw models to the planned occlusion. Each model's occlusal force was applied to determine their distributions under 100 N, 300 N, and 800 N loads. Forces on the maxilla and mandible during fixation, the effect of these forces on the force distribution in the occlusion, and the accumulated stresses in these regions were determined with Algor Fempro and Rhinoceros software to determine the ideal fixation method. Data obtained were interpreted and evaluated according to the advantages and disadvantages of the actual surgical scenario. RESULTS: In all four models studied, the hybrid IMF technique was found to be the ideal IMF technique, followed by the teeth- and bone-supported IMF techniques. CONCLUSIONS: FEA allows the manipulation of single parameters, which clinical methods cannot obtain, thereby allowing each to be examined separately. Further clinical trials are required to validate these findings. [ABSTRACT FROM AUTHOR]
- Published
- 2023
3. Kernel Datum Transformation Considering Triangle Weight Centers
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Uzel, T., primary, Eren, K., additional, Urusan, A. Y., additional, and Gulal, E., additional
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- 2012
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4. Thyroglossal duct cysts : An analysis of 44 cases
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Seven, H., Ersoy, A., Uzel, T., and Şenvar, A.
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Medicine ,Thyroglossal duct cyst,neck mass ,Tıp - Abstract
Objective: The thyroglossal duct cyst (TDC) is the most common congenital neck mass and the second most common of all childhood cervical masses. Fistulas are almost always the result of infection with either spontaneous or surgical drainage. The purpose of this study is to review the clinical aspects and the results obtained with the surgical treatment of patients with TDC’s and fistulas who have been treated over the past ten years in our department.Methods: Forty-four patients with thyroglossal duct cysts or fistulas managed in the ORL Department of the Şişli Etfal Hospital over the past 10 years were reviewed.Results: The most frequent clinical presentation was that of a cystic mass without any inflammatory signs (54.5%). All patients underwent the standard Sistrunk operation. There was one recurrence among the 44 patients. The most common histologic pattern was pseudostratified, ciliated, columnar epithelium (50%). Nine of the specimens (20.4%) contained ectopic thyroid tissue. One patient had papillary carcinoma in thyroid tissue of the cyst wall.Conclusion: We advocate the Sistrunk procedure to be the choice of surgical treatment in order to prevent a possible recurrence.
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- 2016
5. Bone Maturation in Turkish Newborns
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Neyzi, O., Günöz, H., Uzel, T., Celenk, A., Ozsarfati, J., Sait, R., Yenerer, N., Borms, J., editor, Hauspie, R., editor, Sand, E. A., editor, Susanne, C., editor, and Hebbelinck, M., editor
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- 1984
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6. Calculation of Greenland and Antarctica Glaciers' Weights Causing Some Earthquakes and Volcanic Activities
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Ürüşan, A.Y., primary, Uzel, T., additional, and Eren, K., additional
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- 2014
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7. The Ionospheric refractivity effects on the GPS signals
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Unver, O., primary, Guyer, S., additional, Uzel, T., additional, and Can, Z., additional
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- 2013
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8. Immigration-related mental health disorders in refugees 5–18 years old living in Turkey
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Yalin Sapmaz Ş, Uzel Tanrıverdi B, Öztürk M, Gözaçanlar Ö, Yörük Ülker G, and Özkan Y
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Young refugees ,asylum-seekers ,mental health ,risk factors ,Neurosciences. Biological psychiatry. Neuropsychiatry ,RC321-571 ,Neurology. Diseases of the nervous system ,RC346-429 - Abstract
Şermin Yalın Sapmaz,1 Bengisu Uzel Tanrıverdi,2 Masum Öztürk,1 Özge Gözaçanlar,1 Gülsüm Yörük Ülker,2 Yekta Özkan1 1Department of Child and Adolescent Psychiatry, 2Department of Psychology, Faculty of Medicine, Celal Bayar University, Manisa, Turkey Purpose: This study assessed early-onset psychiatric disorders and factors related to these disorders in a group of refugee children after immigration due to war.Materials and methods: This study was conducted between January 2016 and June 2016. Clinical interviews were conducted with 89 children and their families, and were performed by native speakers of Arabic and Persian who had been primarily educated in these languages and were living in Turkey. A strengths and difficulties questionnaire (SDQ) that had Arabic and Persian validity and reliability was applied to both children and their families. Independent variables for cases with and without a psychiatric disorder were analyzed using the χ2 test for categorical variables, Student’s t-test for those that were normally distributed, and Mann–Whitney U-test for data that were not normally distributed. Data that showed significant differences between groups who had a psychiatric disorder and on common effects in emerging psychiatric disorders were analyzed through binary logistic regression analysis.Results: A total of 89 children and adolescents were interviewed within the scope of the study. The mean age of cases was 9.96±3.98 years, and 56.2% (n=50) were girls, while 43.8% (n=39) were boys. Among these children, 47 (52.8%) had come from Syria, 27 (30.3%) from Iraq, 14 (15.7%) from Afghanistan, and 1 (1.1%) from Iran. A psychiatric disorder was found in 44 (49.4%) of the children. A total of 26 children were diagnosed with anxiety disorders, 12 with depressive disorders, 8 with trauma and related disorders, 5 with elimination disorders, 4 with attention deficit/hyperactivity disorder, and 3 with intellectual disabilities. It was determined that seeing a dead or injured person during war/emigration and the father’s unemployment increased the risk of psychopathology. The OR was 7.077 (95% CI 1.722–29.087) for having seen a dead or injured individual and 4.51 (95% GA 1.668–12.199) for father’s employment status.Conclusion: Within the context of war and emigration, these children try to cope with the negative circumstances they experience prior to migration, as well as the despair they see their parents experience. Keywords: young refugees, asylum seekers, mental health, risk factors
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- 2017
9. ASO Author Reflections: It Does Not Matter Whether Radical Prostatectomy is Performed in High-Risk Localized Disease or at the Oligometastatic Stage.
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Hamidi N, Uzel T, Beyatlı M, and Duvarci M
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Radical prostatectomy (RP) alone has traditionally been considered insufficient for patients with high-risk localized prostate cancer (HRPC) owing to the frequent need for adjuvant salvage radiotherapy or androgen deprivation therapy (ADT) following surgery. Previously, systemic therapy, such as ADT, was the standard treatment for metastatic prostate cancer (PC) patients; RP was not considered viable for these patients. However, since 2015, there has been a recognition that metastatic PC patients can be categorized based on the extent of their metastases, leading to the consideration of RP for some metastatic cases. In recent years, the concept of cytoreductive RP has gained traction; studies suggest that it may improve survival rates in metastatic PC patients through mechanisms, such as tumor debulking and enhancement of the immune response. A meta-analysis of retrospective studies has shown that cytoreductive RP is associated with higher cancer-specific survival rates at 1-year, 3-year, and 5-year intervals compared with systemic therapy alone. In our study, which followed HRPC and oligometastatic PC patients for an average of 46 months, we observed biochemical recurrence in 17.8% of HRPC and 13% of oligometastatic patients, with overall survival rates of 96.4% and 87%, respectively. Although prospective or randomized studies are still lacking, current retrospective studies, including our own, suggest promising outcomes for RP in HRPC and oligometastatic patients. With the increasing prevalence of robotic surgery, improved pelvic anatomy observation, and growing surgical confidence, the realization of prospective randomized study results may not be far off., (© 2024. Society of Surgical Oncology.)
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- 2024
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10. Comparison of Complications and Mid-term Results for Patients who Underwent Open Radical Prostatectomy for High-Risk and Oligometastatic Prostate Cancer: A Cross-Sectional Study from a Tertiary Reference Center.
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Beyatlı M, Duvarci M, Uzel T, Aybal HÇ, Hamidi N, Ceylan O, Çağlar E, and Basar H
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Background: This study aimed to evaluate perioperative complications and oncologic results for high-risk and oligometastatic prostate cancer patients., Methods: The data of patients who underwent surgery for prostate cancer in the authors' clinic between January 2012 and March 2022 were analyzed retrospectively. According to D'amico classification, 28 patients with high-risk prostate cancer and 23 patients in the oligometastatic stage were included in the study. The patients were divided into two groups: group 1 (high-risk prostate cancers) and group 2 (oligometastatic cancer). Demographic characteristics, oncologic data, pathologic data, and complications of the patients were recorded., Results: The mean age of the patients was 67.84 years (range, 52-79 years). The average follow-up period was 45.48 months for group 1 and 46.36 months for group 2 (p = 0.84). The mean hemoglobin decrease was 1.53 g/dL in group 1 and 0.69 g/dL in group 2 (p = 0.046). Five patients (17.8%) in group 1 had biochemical recurrence at 14.55 months, whereas three patients (13%) in group 2 had biochemical recurrence at 9.87 months (p = 0.646). According to Clavien-Dindo classification, major complications developed in 7.2% of the group 1 patients and in 8.6% of the group 2 patients. Surgical margin positivity was detected in 6 group 1 patients (21.4%) and 12 group 2 patients (52.2%) (p = 0.023). During the follow-up period, four patients died. Only one of the patients died of cancer., Conclusion: The authors think that oligometastatic and high-risk prostate cancer surgeries do not differ significantly in terms of complications., (© 2024. Society of Surgical Oncology.)
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- 2024
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11. Does Formalin Disinfection Reduce Bacterial Colonization of Biopsy Needle? A Prospective Study.
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Uzel T, Öztürk E, Ozden E, Dagli İ, Hamidi N, Duvarci M, Mumcuoglu İ, Dal T, and Basar H
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- Humans, Male, Prospective Studies, Biopsy, Needle methods, Biopsy, Needle instrumentation, Biopsy, Needle adverse effects, Aged, Middle Aged, Disinfectants pharmacology, Equipment Contamination prevention & control, Prostate pathology, Prostate microbiology, Needles microbiology, Urinary Tract Infections prevention & control, Formaldehyde pharmacology, Disinfection methods
- Abstract
Objective: To investigate the efficacy of formalin disinfection of the needle tip in transrectal prostate biopsy (TRB) procedure to reduce infectious complications. The primary aim is to assess the impact of formalin on bacterial contamination of biopsy needle tips and its association with post-biopsy infective events., Materials and Methods: We have employed a bacterial culture-based observational cohort design in this study. Two groups, formalin disinfection and non-formalin group, both underwent systematic 12-core TRB. In the formalin group, the biopsy needle tip was immersed in 10% formalin solution after each core, while in the non-formalin group, no formalin solution immersion was used. The primary outcomes include bacterial growth on biopsy needle tips and post-biopsy infective events., Results: Formalin disinfection significantly reduced bacterial growth on needle tips (P <.001). The formalin group had no post-biopsy infections or sepsis, while the non-formalin group experienced a 7.5% infective event rate after TRB., Conclusion: Formalin disinfection of biopsy needle tip significantly reduces bacterial growth on biopsy needle and urinary tract infectious complications developed secondary to TRB. Further multicenter randomized controlled studies with larger cohorts are warranted to validate and establish formalin disinfection as a routine practice in TRB procedures., Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 Elsevier Inc. All rights reserved.)
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- 2024
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12. Initial Experiences of Laparoscopic Nephrectomy in a Tertiary Oncology Center: An Analysis of 142 Cases.
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Duvarcı M, Ceylan O, Beyatlı M, Uzel T, Öztürk E, Hamidi N, and Başar H
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Introduction: Kidney tumors have an important place among urological malignancies. The increased utilization of imaging methods has led to a rise in renal cell carcinoma (RCC) diagnoses, albeit with declining mortality rates, particularly in developed countries. Radical nephrectomy remains the gold standard treatment. The aim of this study was to share a tertiary oncology hospital's initial experiences with laparoscopic nephrectomy., Materials and Methods: This retrospective study analyzes data from patients who underwent laparoscopic nephrectomy, focusing on demographic characteristics, tumor features, and operative outcomes. Information regarding age, gender, tumor size, operative details, and pathology results was collected and analyzed., Results: One hundred forty-two patients were included in the study; 69 (48.60%) were female and 73 (51.40%) were male. The mean age of the patients was 57.11 ± 12.6 years, with tumors primarily located on the left kidney (52.80%). The mean tumor size was 53.01 ± 24.01 mm. Intraoperative complications included the need for conversion to open surgery in five cases and vascular, pneumothorax, or duodenal injuries in a subset of patients. However, postoperative complications, such as sepsis or mortality, were not observed., Discussion: Despite an initial learning curve associated with longer operation times, laparoscopic techniques offer benefits, including reduced blood loss, faster recovery, and improved cosmetic outcomes. Histologically, clear cell RCC was the most common tumor type encountered. This study underscores the safety and efficacy of laparoscopic radical nephrectomy, advocating for its widespread adoption while emphasizing the importance of surgeon experience and patient selection in optimizing outcomes., Competing Interests: The authors have declared that no competing interests exist., (Copyright © 2024, Duvarcı et al.)
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- 2024
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13. The 5-Factor Modified Frailty Index is effective in treatment decision and the determination of perioperative complications in patients with localized prostate cancer.
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Demirci A, Hamidi N, Uzel T, and Başar H
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- Male, Humans, Child, Preschool, Child, Postoperative Complications epidemiology, Postoperative Complications etiology, Retrospective Studies, Prostatectomy adverse effects, Prostatectomy methods, Frailty complications, Prostatic Neoplasms surgery, Prostatic Neoplasms complications
- Abstract
Purpose: To determine the active treatment option and perioperative complications using the 5-Factor Modified Frailty Index (mFI-5) in localized prostate cancer patients., Material and Methods: Patients diagnosed with localized prostate cancer in our clinic between January 2018 and October 2022 were evaluated. The patients were separated according to the mFI-5 scores as Group 1 (score = 0, n = 74), Group 2 (score = 1, n = 41), and Group 3 (score ≥ 2, n = 69). Factors affecting the determination of treatment selection, oncological results, and surgical complications were identified with regression analysis., Results: The mean age of the patients in Group 1 was lower than in Group 2 and Group 3 (63.09 ± 7.25 years vs. 67.56 ± 7.98 years and 69.2 ± 6.77 years, p < 0.001, respectively). In Group 1, more patients were treated with retropubic radical prostatectomy (RRP), and in Group 3 with radiotherapy (RT) and active surveillance (AS) (62.2%, 53.6%, and 17.4%, p = 0.001, respectively). The rate of Clavien-Dindo grade 3 and 4 complication rates were higher in Group 3 than in Group 1 (50% vs. 8.7%, p < 0.001, respectively). Frailty was found to be an independent risk factor for overall survival (HR: 10.68, p = 0.02), the presence of Clavien-Dindo ≥ 3 complication (HR: 4.9, p = 0.02) and determination of RT/AS as the active treatment option (HR: 2.45, p = 0.04)., Conclusion: In patients with frailty according to the mFI-5, the complication rate after RRP in localized prostate cancer increased. When selecting the treatment to be applied in these patients, it will be useful to also evaluate the frailty status., (© 2023. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
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- 2023
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