Radiological study on mandibular ramus asymmetry in young population

Background: The aim of this study was to estimate the prevalence of ramus asymmetries related to age and gender in a young population and the influence of growth spurt on ramus asymmetry. Materials and methods: The study consisted of 776 panoramic radiographs of individuals aged 9 to 21 years (335 males and 441 females). Individuals were divided into two groups with respect of linear growth spurt as age 12 in females and age 14 in males. The first group consisted of females aged between 9 and 11 and males between 9 and 13. The second group consisted of females aged between 12 and 21 and males between 14 and 21. Bilateral ramus heights on each radiograph were measured. A panoramic software programme was used to measure the ramus heights. Quantitative data was tested by Student’s t test. Qualitative data was tested by χ2 test. The intraclass correlation coefficient was calculated for the magnitude error of the measurement. Results: The mean of ramus asymmetry was found to be 2.90% ± 2.58%. Significant differences between the right and left ramus height ratios were observed (p < 0.01). There was a high prevalence (10.8%) of ramus asymmetry, which did not correlate with the age and gender of the patients. Conclusions: This study revealed a high prevalence of ramus asymmetry in 9–21- -year-old population. Within the limitations of this study, it can be concluded that ramus asymmetry should be carefully evaluated in all ages for the potential relation with temporomandibular dysfunctions and also for orthodontic anomalies

The Influence of Computational Mesh on the Prediction of Vortex Interactions about a Generic Missile Airframe

A research program has been underway for four years to study vortex interaction aerodynamics that are relevant to military air vehicle performance. The program has been conducted under the auspices of the NATO Science and Technology Organization (STO), Applied Vehicle Technology (AVT) panel by a Task Group with the identification of AVT-316. The Missile Facet of this group has concentrated their work on the vortical flow field around a generic missile airframe and its prediction via computational methods. This paper focuses on mesh-related effects and RANS simulations. Simulated vortex characteristics were found to depend strongly on the properties of the employed mesh, in terms of both resolution and topology. Predictions of missile aerodynamic coefficients show a great dependence on mesh properties as they are sensitive to computed vortex dynamics. Key suggestions about the desired mesh characteristics have been made. Based on these, a shared mesh was constructed to perform common analyses between the AVT-316 Missile Facet members. Mesh based uncertainties of the aerodynamic coefficient predictions were estimated via Richardson Extrapolation method

Laryngeal embryonal rhabdomyosarcoma in an adult - A case presentation in the eyes of geneticists and clinicians

<p>1. Abstract</p> <p>Background</p> <p>Rhabdomyosarcoma is a solid tumor, resulting from dysregulation of the skeletal myogenesis program. For rhabdomyosarcomas (RMS) with a predilection for the head and neck, genitourinary tract, extremities, trunk, retroperitoneum, the larynx is still an unusual site. Till now only several cases of this laryngeal tumor have been described in world literature in the adult population. The entire spectrum of genetic factors underlying RMS development and progression is unclear until today. Multiple signaling pathways seem to be involved in ERMS development and progression.</p> <p>Case presentation</p> <p>In this paper we report an interesting RMS case in which the disease was located within the glottic region. We report an embryonal rhabdomyosarcoma of the larynx in 33 year-old man. After unsuccessful chemotherapy hemilaryngectomy was performed. In follow up CT no signs of recurrence were found. Recently patient is recurrence free for 62 months.</p> <p>Conclusions</p> <p>Considering the histological diagnosis and the highly aggressive nature of the lesion for optimal diagnosis positron electron tomography (PET) and computerized tomography (CT) of the neck and thorax should be performed. At this time surgical treatment with adjuvant radiotherapy seems to be the treatment of choice for this disease. Rhabdomyosarcoma of the larynx has a better prognosis than elsewhere in the body, probably because of its earlier recognition and accessibility to radical surgery.</p

Comparative study of impact strength of six acrylic denture resins

The aim of this in vitro study was to compare the impact strength of three kinds of heat polymerised acrylic resin: a microwave polymerised acrylic resin, a visible light cured resin and a self-cured acrylic resin. From a group of six different materials, a total of 60 specimens (75 x 10 x 3 mm) were fabricated, 10 from each material. The impact strength was evaluated using the Charpy method. The test was performed at room temperature in an impact testing machine (Zwick pendulum impact tester; Zwick GmbH & Co. KG, Ulm, Germany) of a capacity of 0-7.5 J scale; the specimens were fractured. For statistical analysis, Kruskal-Wallis test followed by Dunn's multiple comparison test was used. The impact strength values exhibited statistically significant differences among acrylic resin groups (p=0.0001). High impact strength acrylic resin showed the highest mean impact strength value among the materials tested

Could Red Cell Distribution Width be a Marker in Hashimoto's Thyroiditis?

Aims: Hashimoto's Thyroiditis (HT) is the most common autoimmune thyroiditis worldwide and characterized with lymphomonocytic inflammation of the thyroid gland. Red cell distribution width (RDW) reflects erythrocyte anisocytosis and besides it increases in iron deficiency anemia, recent studies reported that RDW was also associated with conditions characterized with overt or subclinical infl ammation. We aimed to answer whether RDW increased in Hashimoto's thyroiditis

Association between Omentin Levels and Insulin Resistance in Pregnancy

Aims: Omentin is a new adipokine secreted mainly from visceral adipose tissue. Serum omentin is found to be reduced in patients with impaired glucose tolerance, type 2 diabetes mellitus, obesity and insulin resistant states. Despite the fact that pregnancy is also characterized with hyperinsulinemia, literature is lacking about data of omentin levels and its association with insulin resistance in pregnant women. We aimed to evaluate the association of omentin levels and insulin resistance in pregnant women and to compare these levels with those of non-pregnant, nondiabetic women

childhood obesity in Denizli, Turkey

Aim: To determine the efficiency of 2 different intervention programs (healthy nutrition education and/or physical activity programs) for preventing the obesity of primary school students.Materials and methods: Selected were 6 schools, making 3 groups, from all primary schools in Denizli with the half-day education system. Each group was composed of 2 schools. The groups were randomly divided into intervention group 1, intervention group 2, and the control group. The body mass index (BMI) levels of the students in all of the groups were calculated. Both the physical activity and healthy nutrition programs were applied to intervention group 1, and only the healthy nutrition program was applied to intervention group 2. BMI measurements were repeated 8 months after the interventions. The differences between the 2 BMI measurements were calculated.Results: The increase of BMI was 0.51 in the control group and 0.35 and 0.37 in the respective intervention groups. It was found that the BMI increase in both of the intervention groups was lower than that of the control group, which means that the interventions were effective.Conclusion: Two different intervention programs were applied (healthy nutrition program and/or physical activity) and were found to be effective in preventing obesity in children

The effect of feto-maternal blood type incompatibility on development of gestational diabetes mellitus

PubMed ID: 24770823Objective. To assess the relation between fetal and maternal blood type (ABO, Rh) incompatibility and development of gestational diabetes mellitus (GDM). Materials and Methods. A total of 500 pregnant women underwent diagnostic test for GDM by a 100-g oral glucose tolerance test (OGTT) after an 8 to 12-h overnight fast participated in this study. OGTT was performed between the 24-28 weeks of gestation, but participants who were at high risk for GDM were tested after the first prenatal visit. In the postpartum period, maternal and infant blood types were determined. Presence of GDM was evaluated in terms of matched and unmatched fetal and maternal ABO and Rh blood types separately. Results. GDM was detected in 235 participants. Unmatched ABO blood types between the mother-infant pairs were present in 44.7% (n=105) of GDM (+) and 35.8 % (n=95) of GDM (-) patients. Incompatible feto-maternal ABO blood type was positively correlated with development of GDM which was marginally significant. (p=0.045; R=1.2;95% CL; 1.004-1.48). However, Rh feto-maternal blood type incompatibility was not related with development of GDM. Conclusions. Feto-maternal ABO blood type incompatibility may be a weak risk factor for the development of GDM. © Società Editrice Universo (SEU)