scholarly journals Legalization of Bride measure to detect talented children in kindergarten in Damascus governorate: تقنين مقياس برايد PRIDE للكشف عن الأطفال الموهوبين بمرحلة الروضة بمحافظة دمشق

2021 ◽  
Vol 5 (45) ◽  
pp. 86-68
Author(s):  
Farah Nizar Daowd Farah Nizar Daowd
Keyword(s):  
Gifted Children ◽  
Application Process ◽  
Psychological Measurement ◽  
Knowledge Test ◽  
Discriminatory Ability ◽  
Significance Level ◽  
The Matrix ◽  
Detection And Diagnosis ◽  
Measurement And Evaluation ◽  
Verbal Knowledge

This research aims to identify the methods of detection and diagnosis of gifted children in pre-school stage, where a modified Syrian image was developed on the BRIDE scale for the detection of gifted in pre-school stage, with indications of validity, stability, and effectiveness of the Syrian environment paragraphs. The process of preparing the scale included a number of stages and procedures, represented in preparing an image of the scale and reviewing it by a number of arbitrators in the Department of Special Education and Educational and Psychological Measurement and Evaluation, and then applying that image to a sample of 100 boys and girls representing a number of kindergartens in Damascus governorate. Then, the data resulting from the application process was analyzed, and indications were reached about the discriminatory honesty, as it was found that there is a difference in favor of the first group (higher) whose average is greater, and this indicates that the scale is characterized by a discriminatory ability in favor of the higher group in the total score of the scale, The validity of the inter-correlations was studied and it was found that most of the correlations of the items of the scale are significant at the significance level (0.01) and the significance level (0.05), and the spoken honesty was studied with the significance of another criterion, which is the Stanford test, which shows the fifth standardized picture on the Syrian environment and fig. The values ​​of the correlation of the verbal knowledge test with the domains of the Pride scale and its total score ranged between (0.819-0.387), while we notice the correlation values ​​with the matrix test (0.836-0.318). As for the indicators of scale stability, it was calculated in two ways, namely, the repeat method (0.915) and the half-segment method (0.892).

scholarly journals Avaliação da Resistência de União Entre Resina Composta e Substrato Dentinário Exposto à Quitosana

2017 ◽  
Vol 19 (3) ◽  
pp. 191
Author(s):  
Sarah Cavalcante De Barros ◽  
Heloise Caroline Vieira ◽  
Maura Cristiane Gonçalves Orçati Dorilêo ◽  
Murilo Baena Lopes ◽  
Sandrine Bittencourt Berger ◽  
...  
Keyword(s):  
Bond Strength ◽  
Composite Resin ◽  
Adhesive System ◽  
Smear Layer ◽  
Test Machine ◽  
Distilled Water ◽  
Significance Level ◽  
Layer Removal ◽  
The Matrix

Em endodontia, indicam-se substâncias quelantes para a remoção da lama dentinária. O objetivo deste estudo foi avaliar, in vitro, por meio do microcisalhamento, a resistência de união da resina composta com superfícies dentinárias tratadas com EDTA (17%) e quitosana (0,2%). De 30 coroas de dentes bovinos foram removidas as paredes palatina, mesial e distal, expondo a superfície dentinária da parede vestibular da câmara coronária, que abrasionada produziu a camada de esfregaço. Após, a superfície foi tratada, estabelecendo-se 3 grupos (n=10): G1 (controle) com aplicação de água destilada (1min); G2 com aplicação de EDTA (3 min.), e lavagem com água destilada (1 min.); e G3 com aplicação de quitosana (3 min.), lavagem com água destilada (1 min.). Na sequência foram aplicados 2 ml de NaOCl (2,5%), 2 ml de água destilada (1 min), armazenando-as em água destilada (37 °C). Retiradas da água destilada (24 h), fixaram –se 3 tubos Tygon (1mmX1mm) na dentina após o condicionamento local com sistema adesivo convencional de 2 passos. Preenchidos com resina composta e após fotoativação, os tubos foram removidos obtendo-se cilindros que foram submetidos ao microcisalhamento em máquina de ensaio universal. Os resultados de resistência de união (MPa) foram submetidos a Análise de Variância e Tukey, com nível de significância 5%. Observou-se que a resistência de união de G2 e G3 foram equivalentes estatisticamente (p>0,05), porém significativamente maiores que em G1 (p<0,05). Conclui-se que quitosana e EDTA promovem resistência de união semelhante nas condições testadas.Palavras-chave: Camada de Esfregaço. Dentina. Endodontia.AbstractIn endodontics, chelating substances are indicated for smear layer removal. This study evaluated, by micro-shear, the bond strength between composite resin and dentin surfaces treated with EDTA (17%) and chitosan (0.2%). The palatal, mesial and distal walls were removed from 30 crowns of bovine teeth, to expose buccal dentin of coronary chamber, whose abrasion produced the smear layer. The surface was treated, considering 3 groups (n = 10): G1 (control) distilled water (1min); G2 EDTA application (3 min), and distilled water (1 min); and G3 chitosan application (3 min.), distilled water (1 min.). All groups received 2 ml of NaOCl (2.5%), 2 ml of distilled water (1 min), and then stored in distilled water (37 °C). After that (24 h), 3 Tygon matrix (1 mmX1 mm) were fixed to the dentin after surface storing them with a two-step adhesive system. Then, the matrixes were filled with composite resin, and once photoactivated, the matrix were removed resulting in cylinders that were submitted to micro-shear bond test in universal test machine. The results (MPa) were submitted to ANOVA and Tukey, with significance level of 5%. It was observed that G2 and G3 bond strength were statistically equivalent (p> 0.05), but significantly higher than G1 (p <0.05). It is concluded that chitosan and EDTA resulted in similar bond strength under the conditions tested.Keywords: Smear Layer. Dentin. Endodontics.

scholarly journals Development of Creation of Executive Function-EF Model for Preschool Children through the Participation Process of the School under Suan Dusit University’s Network

2019 ◽  
Vol 10 (5) ◽  
pp. 13-23
Author(s):  
Kwanfah Rangsiyanon ◽  
Pornluck Intamra ◽  
Sasipun Pianpiamsin ◽  
Sinsupa Wannasuth ◽  
Siripong Tinnarat
Keyword(s):  
Executive Function ◽  
Data Analysis ◽  
Preschool Children ◽  
Significance Level ◽  
Quantitative Data Analysis ◽  
The Creation ◽  
Participation Process ◽  
Teachers And Parents ◽  
Measurement And Evaluation ◽  
High Level

Abstract The objectives of this research were to create the trial and develop the creation of Executive Function-EF Model. The research consisted of 3 procedures, which were 1) The formation of sample, which was teachers and parents from the school under Suan Dusit University’s Network; 2) The trial of sample, which was children between 3-5 years old from 6 schools under Suan Dusit University’s Network; and 3) The development of key informants, which were the Executive Function-EF Model specialists in terms of measurement and evaluation and early childhood education, including the representatives of teacher, administrator, and parents from the school under Suan Dusit University’s Network. The content analysis was used in the qualitative data analysis. The average, standard deviation, and dependent t-test were used in the quantitative data analysis. The research results found that 1. The creation of Executive Function-EF Model consisted of 4 components, which were principle, objective, learning process, and evaluation; 2. The trial result of the creation of Executive Function-EF Model was that the development of creation of Executive Function-EF Model of preschool children in the overall image and each aspect after using the model was higher than before using the model with the statistically significance level of .001 and 3. The result of the development of creation of Executive Function-EF Model was that the creation of Executive Function-EF Model that was developed was suitable to be used and had the possibility to be put into practice in a high level.

scholarly journals Dimensional Change of Elastomeric Materials after Immersion in Disinfectant Solutions for Different Times

2011 ◽  
Vol 12 (4) ◽  
pp. 252-258 ◽  
Author(s):  
Cintia Iara Oda Carvalhal ◽  
José Antônio Nunes de Mello ◽  
Lourenço Correr Sobrinho ◽  
Américo Bertolazzo Correr ◽  
Mário Alexandre Coelho Sinhoreti
Keyword(s):  
Sodium Hypochlorite ◽  
Dimensional Change ◽  
Optical Microscope ◽  
Control Group ◽  
Significance Level ◽  
Linear Dimensions ◽  
Impression Materials ◽  
Immersion Period ◽  
Elastomeric Materials ◽  
The Matrix

ABSTRACT Aim The aim of this study was to evaluate the influence of immersion period in two disinfectant solutions on dimensional change of four elastomeric impression materials. Materials and methods Four representative materials of each class of elastomers: Xantopren (polydimethylsiloxane—PDS), Express (polyvinyl siloxane—PVS); Permlastic (polysulfide— PS) and Soft Impregum (polyether—EP) were mixed according to manufacturers’ instructions and then inserted into a metal matrix prepared according to the specification of ISO 4823. The molds were removed from the matrix after 7 minutes and immersed in disinfectant solutions (sodium hypochlorite 0.5 and 2% glutaraldehyde) for 5, 10, 20, 30 and 60 minutes (n = 7), except the control group, which was not immersed. Once removed from solutions, the test samples were washed in water for 15 seconds, dried and measured three times, using a comparative optical microscope, with accuracy of 0.0005 mm. The analysis of variance with three criteria and Tukey's test with significance level of 5% showed that differences in linear dimensions of the materials analyzed were not statistically significant (p > 0.05) after soaking in sodium hypochlorite 0.5 and 2% glutaraldehyde, for the tested periods of time. Clinical significance Combinations of molding material and disinfecting solution can be used in the dental clinic for infection control, without changing the dimensional molds, for immersion periods not longer than 20 minutes. How to cite this article Carvalhal CIO, de Mello JAN, Sobrinho LC, Correr AB, Sinhoreti MAC. Dimensional Change of Elastomeric Materials after Immersion in Disinfectant Solutions for Different Times. J Contemp Dent Pract 2011;12(4): 252-258.

scholarly journals Avaliação dos tratamentos de superfície na resistência de união entre dois pinos de fibra de vidro e uma resina composta

2021 ◽  
Vol 62 (1) ◽  
pp. 44-55
Author(s):  
Andreza Barbosa Santos Guimarães ◽  
Rana De Brito Granja ◽  
Emily Vivianne Freitas da Silva ◽  
Roberta Novis ◽  
Blanca Liliana Torres Léon
Keyword(s):  
Bond Strength ◽  
Composite Resin ◽  
Testing Machine ◽  
Strength Analysis ◽  
Chi Square ◽  
Significance Level ◽  
Fiber Posts ◽  
The Matrix ◽  
Chi Square Test ◽  
Glass Fiber Posts

Introduction: The aim of this study was to evaluate the influence of different surface treatment methods on glass-fiber posts relative to their bond strength with the composite resin and to evaluate the types of failures that occurred. Materials and Methods: Thirty-six posts from WhitepostDC (FG group) and Exacto Conics (AG group) were used, divided into: Control FG-1 and AG-1 groups – application of silane, according to manufacturers’ specifications; FG-2 and AG-2 groups – conditioning with 10% hydrogen peroxide and silanization; FG-3 and AG-3 groups – aluminum oxide blasting for 10 seconds and silaniza-tion. The composite resin was added in 2-mm increments, each increment was photopolymerized for 40 seconds, until the entire length of the matrix was filled. Then, the assembly (fiber post and composite resin) was sectioned into three portions (cervical, middle and apical) (n = 18). Samples were submitted to the bond strength analysis by a push-out test in a Universal Testing Machine and the failure types were evaluated with a 30 × magnification with an optical micro-scope. Data were submitted to the analysis of variance, the Tukey test, and the chi-square test with a 5% significance level. Results: For AG groups, the treatment with silane (23.10 MPa) resulted in statistically greater bond strength than the treatments with peroxide (17.19 MPa) and blasting (16.28 MPa). It was found that the bond strength was statistically higher in the middle third (21.16 MPa) than in the apical third (12.55 MPa) for the peroxide treatment. The mixed-type failure had the highest prevalence (57.01%). Conclusion: Silane treatment showed statistically greater bond strength values, when the Angelus brand was tested.

Sign in / Sign up

Export Citation Format

Share Document