Background: Prosthodontists estimated the parallelism of the occlusal plane to different anatomical landmarks, which was somewhat arbitrary and depended mainly on their vision. The aim of this research was to assess the degree of accuracy of prosthodontists in determining the parallelism of two lines. This research was aimed to assess which technique would be more accurate for the prosthodontist to distinguish parallelism; the comparison of the occlusal plane with the interpupillary line or with the inferior border of the earlobes. Materials and methods: Twenty eight prosthodontic specialists were included in this research. Illustrations of two lines with different tilts were presented to the participants to distinguish whether parallel or not. These illustrations were divided into two groups; the first group was with lines close together, used with the earlobes and occlusal plane, and the second group was with lines farther apart, used for the interpupillary line and occlusal plane. Results: Prosthodontists were accurate to a fraction of a degree in detecting non-parallel lines. Lines closer together were evaluated more accurately than lines farther apart. Males were slightly better when the lines were closer together. Age, experience, and post graduate degrees didn’t seem to play any role in the judgment of the prosthodontist. Conclusion: Prosthodontists were very accurate and reliable in judging parallel lines. Concerning the comparison of parallel lines, earlobes were better landmarks for orienting the occlusal plane than the interpupillary line.
Background: The aim of this study is to evaluate the color change ∆E of the dental enamel following treatment with 2 kinds of protector (icon infiltrant, clinpro varnish) before fixed orthodontic treatment to avoid the possible white spot lesions. Materials and Methods: Fifty four subjects treated with fixed appliances were divided into 3 groups: the 1st group was control, while the 2nd and 3rd groups were treated with icon infiltrant and clinpro varnish before bonding procedure, respectively. Color parameters (L,a,b) were recorded for the middle and gingival thirds before and after bonding procedure to get the ∆E of each group. Results: One-way ANOVA test showed a non-significant difference in ∆E between the 3 groups a
... Show More
Determination of the level of adipokines (obestatin, vaspin, tumor necrosis factor-? and interleukin-6)in hypo-and hyperthyroid patients from Educational Baghdad Hospital in Baghdad City was investigated. Fifty patients with hypothyroidism and Fifty patients with hyperthyroidism were selected. A control group of thirty euthyroid persons was included. Blood was collected by vein puncture and serum was separated and stored at –20C. Adipokines (obestatin, vaspin, tumor necrosis factor-? and interleukin-6) were estimated using ELISA method. The findings show a significant (p<0.05) increase in obestatin level in hypothyroid patients, while there is no significant difference in hyperthyroid patientsas compared with the euthyroid subjects.
... Show More
(3)
(1)
(4)
(2)
This research includes the histochemical study of the cestode, Bothriocephalus acheilognathi in order to determine location and concentration of the polymorphism of the calcareous corpuscles in different tissues and organs of the above mentioned cestode. In general, it was noticed abundance polymorphism in calcareous corpuscles, which appeared in the shape of spread clusters, oval structures and floats in location in biological units such as longitudinal muscles, mesenchymal tissue and reproductive organs. The present research indicated various polymorphisms in calcareous corpuscles. Furthermore, the polymorphism in calcareous corpuscles indicates their importance as they ensure survival and continuation of
... Show MoreThis study aimed to evaluate the reservoir petrophysical properties (porosity, water saturation, and permeability) for optimal flow unit assessment within the Sadi Formation. Utilizing open hole logging data from five wells, the Sadi formation was divided into two rock units. The upper unit (A) is 45-50 meters thick, mainly consisting of limestone, mainly consisting of shaly limestone at the lower part. The lower unit (B) has a thickness of approximately 75-80 meters and is primarily composed of limestone, further subdivided into three subunits (B1, B2, B3). The average water resistivity is 0.04 ohm-m, and the average mud filtrate resistivity is 0.06 ohm-m. The Pickett plot was utilized to determine Archie parameters (tortuosit
... Show More
Asthma is a disease characterized by hyper reactivity of the trachea and bronchi to reversible either spontaneously or as a result of treatment.
In this study serum magnesium, Zinc, and reduced glutathione levels
were meas ured in order to determine their levels in the asthmatic patients and comparing these levels with healthy controls.
Fifty- four asthmatic patients were enrolled in the study and had their pulmonary function test, and the levels of Mg,Zn
... Show MoreOur goal from this work is to find the linear prediction of the sum of two Poisson process
) ( ) ( ) ( t Y t X t Z + = at the future time 0 ), ( ≥ + τ τ t Z and that is when we know the values of
) (t Z in the past time and the correlation function ) (τ βz
The experiment was conducted inside a glasshouse at the Department of Biology/
Education college Ibn- Alhaitham/ Baghdad University during the growing season 2010-2011. The aim of the study was to assess the influence of increasing of NaCl concentration in
the nutrient solution and different concentrations of proline as spray on the vegetative growth
on the chlorophyll content, soluble carbohydrates percentage, flowers number and the proline
content of vegetative growth. The aim of this study was also to determine the satiable
concentration of proline while decrease the injerion. Effect of NaCl on the studied traits of
two hyborids of tomato plants namely Olga F1 and Hymar F1. Sodium chloride concentration
of 0
In this study, we focused on the random coefficient estimation of the general regression and Swamy models of panel data. By using this type of data, the data give a better chance of obtaining a better method and better indicators. Entropy's methods have been used to estimate random coefficients for the general regression and Swamy of the panel data which were presented in two ways: the first represents the maximum dual Entropy and the second is general maximum Entropy in which a comparison between them have been done by using simulation to choose the optimal methods.
The results have been compared by using mean squares error and mean absolute percentage error to different cases in term of correlation valu
... Show More