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    Evaluation of Mandibular Fractures in Children during Five years' in a Dental School
    (Drunpp-Sarajevo, 2012) Yaman, Ferhan; Atilgan, Serhat; Erol, Behcet; Ucan, Musa Can; Yilmaz, Utku Nezih; Agacayak, Serkan Kamil; Gunes, Nedim
    Mandibular fractures are rarely encountered among the pediatric population, and when they do present, their clinical features differ from those in adults. This retrospective study looked at the age, sex, type and cause of fracture, treatment method and associated injuries and complications in 260 cases of mandibular fracture in children under age 16. Among the most significant findings: Fracture incidence had a 3:5 male:female ratio; 52% of all mandibular fractures involved condyle/subcondyle fractures and 50.7% involved symphysis/parasymphysis fractures; the most common treatment method was intermaxillary fixation; in no cases were severe complications observed during the healing period.
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    Maxillar adenocystic carcinomas and surgical-prosthetic rehabilitation
    (Int Scientific Literature, Inc, 2011) Erol, Behcet; Atilgan, Serahim Serhat; Yaman, Ferhan; Ucan, Musa Can; Yilmaz, Utku Nezih; Yildiz, Fetin
    Background: Due to its microscopic appearance, characteristic clinical behavior, high level of recurrence and systemic spread, adenocystic carcinoma is considered as separate from other forms of glandular neoplasm. In terms of clinical behavior, it is the most deceptive tumor in the head-neck region. It most commonly involves the parotid, submandibular gland, tongue and accessory salivary glands in the palate. The clinical appearance is of a mass with hardness at palpitation and sometimes pain or sensitivity. Postoperative prosthetic defect rehabilitation is functionally and phonetically essential. Case Report: The first patient was a 50-year-old woman with a painful swelling in the right maxillary molar and palatal region, which had persisted for the previous year and grown rapidly during the previous 2 months, and with congestion in the right side of the nose. The second patient was a 36-year-old woman complaining of swelling in the left cheek 1.5 years previously and an inability to open her mouth 5-6 months before application to our clinic, a solid mass, painful on palpitation, causing facial asymmetry along the left cheek and limiting mouth opening. Conclusions: Our aim is to present and discuss surgical approaches adopted in cases reported as adenocystic carcinoma, which occupies a special place among malign salivary gland tumors, the first case involving the maxillary dentoalveolar structure and maxillary sinus, and the second case involving the buccal, retromaxillary, infratemporal and pterygomandibular fossa.
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    Melanotic neuroectodermal tumor of infancy
    (Int Scientific Information, Inc, 2011) Atilgan, Serhat; Erol, Behcet; Yaman, Ferhan; Yilmaz, Utku Nezih; Can, Cevat
    Background: Melanotic neuroectodermal tumor of infancy (MNTI) is a rare, distinctive neoplasm of neural crest origin, primarily containing melanin, and affecting the maxilla of infants during the first year of life. The tumor is benign but may grow very rapidly and invade the bone marrow. Very rare examples of malignant transformation have also been reported. Treatment consists of surgical removal, somewhat more aggressive than the typical conservative removal. Case Report: A 4-month-old male was admitted to our clinic after the parents noted a rapidly growing swelling in the anterior maxilla 3 weeks previously and difficulty in oral feeding and weight loss due to malnutrition. Conclusions: This tumor is an uncommon benign tumor of neural crest origin occurring in infants. The lesion exhibits a good response to surgical excision, with few recurrences, although long-term follow-up is advised because of the possibility, albeit rare, of malignant change.
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    Separation of Line Widths of HOD Peaks of Healthy and Diseased Blood and Urine Groups Using 400 MHz NMR
    (Springer, 2025) Sakar, Mehmet Nafi; Yilmaz, Utku Nezih; Koylu, Mehmet Zafer
    Line width studies of high field nuclear magnetic resonance (NMR) peaks have been seen more frequently in the recent literature. This study aims to compare the NMR line widths of HOD peaks of healthy and diseased blood, and densely bloody cysts taken from the jaw. Comparisons of HOD peak line widths in healthy and diseased urine were also made. For this purpose, the blood, serum, and urine of 29 cancer patients, 17 diabetic patients, 28 healthy volunteers, and 20 intensely bloody samples from jaw cysts were collected. Mixtures were prepared by adding the 0.02-mL sample to 0.98 mL D2O. Single-pulse proton NMR measurements were performed at 400 MHz, and line widths were obtained from the half-height of the blood HOD peak. Statistical evaluations show that the line width of cancerous blood is different from normal blood (P = 0.032), while the line width of diabetic blood is not different (p = 0.072), whereas other groups and bloody jaw cysts are completely different (p < 0.05). Similar results were found for urine groups. Line widths show a moderate correlation with each of the albumin and total protein groups (R around 0,56). Present data suggest that a comparison of healthy and diseased body fluids can be made by line width measurements of the HOD peak in the high NMR field. Data also suggest that the relaxivities of albumin (Ser-Alb), total protein (Ser-TP) are potential diagnostic indicators for cancerous blood.
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    Total Relaxivities of Material Content in Various Cysts and Ameloblastoma: Implications for Discriminating Different Fluids
    (Humana Press Inc, 2010) Yilmaz, Utku Nezih; Guner, Rezzan; Erol, Behcet
    Nuclear magnetic resonance T (1) and T (2) relaxivities (r (1) and r (2)) exhibit efficiency of a material to alter the relaxation rates (1/T (1) and 1/T (2)), and they are being used for diagnostic purposes. The determination of total relaxivities (r (1t) and r (2t)) of cystic fluid content and ameloblastoma may therefore be useful for discriminative purposes. In order to determine what makes total relaxivities of hemorrhagic cysts, four sets of tubes containing pooled cyst were doped with increasing concentrations of iron, copper, albumin, and gamma-globulins. These sets were replaced in a phantom together with six individual cysts and one ameloblastoma. The relaxation times were measured by magnetic resonance imaging operating at 1.5 T. The relaxivities of individual ions and proteins were determined from the slope of the relation between relaxation rates and concentration, while total relaxivities were determined by using the increases in relaxation rates and material content of cystic fluid (MC). Iron, copper, albumin, and gamma-globulins were found to be the sources of r (1t) and r (2t). Each of r (1t), r (2t), r (1t)MC, r (2t)MC, and r (2t)/r (1t) are distinctive parameters for each cystic category and ameloblastoma. Except for MC, the parameters measured for ameloblastoma are significantly smaller than those of cysts. The similarity of the present results to those used in clinical applications suggests that each of r (1t), r (2t), r (1t)MC, r (2t)MC, and r (2t)/r (1t) has an ability to discriminate various fluids and masses. The present work also suggests that r (1t)MC, r (2t)MC, and r (2t)/r (1t) can be determined in vivo.