scholarly journals Stabilitas warna basis akrilik gigitiruan lepasan setelah pembersihan dengan ekstrak dan infusa bunga rosella(Color stability of removabl

2014 ◽  
Vol 13 (1) ◽  
pp. 38
Author(s):  
Irfany Irfany ◽  
Moh. Dharmautama ◽  
Ike Damayanti
Keyword(s):  
Color Stability ◽  
T Test ◽  
Color Changes ◽  
Food And Beverages ◽  
Alternative Product ◽  
Removable Denture ◽  
Significant Difference ◽  
Before And After ◽  
Anthocyanin Pigments

The efficacy of rosella which are for bacteriostatic purposes and contain anthocyanin pigments as antioxidant, vitaminand minerals. There are so many benefits of rosella that it is necessary to develop alternative product of Rosellabesides as food and beverages. One of the alternatives is as herbal disinfectant for removable denture acrylic. The aimof the study is to observe the color changes of removable denture acrylic base after using extract and infusion ofRosella as denture cleanser. Each of 5 full dentures were utilized to observe the color changes before and after usingRosella extract with concentration 2.5%, 5%, 7.5 %,and 10% and also infusion with concentration 5% , 10%, and 20% . The values were obtained and inserted into the formula ∆E*ab = [(∆L*) 2+ (∆a*)2+ (∆b*). The results wereanalyzed by using Kosmorogrov and T-test. The study showed the extract of Rosella which have concentration 2.5%,5%, 7.5% and 10%, and infusion concentration 5%, 10%, and 20%, did not show significant difference in colorchanges (p<0.05). There are significant differences of color between intaglio and polished surfaces in color absorption(p<0.05). It was concluded that there are color changes, but not significant, in using extract and infusion of Rosella.

scholarly journals Influence of the Arabic-Coffee on the Overall Color of Glazed or Polished Porcelain Veneers – In vitro Study

2019 ◽  
Vol 13 (1) ◽  
pp. 364-370 ◽  
Author(s):  
Nabiel Alghazali ◽  
Afaf A. Hakami ◽  
Ghadah A. AlAjlan ◽  
Rawan M. Alotaibi ◽  
Faris N. Alabdulwahab ◽  
...  
Keyword(s):  
Colour Change ◽  
In Vitro Study ◽  
Color Stability ◽  
Color Changes ◽  
Significant Difference ◽  
Oral Environment ◽  
Before And After ◽  
Feldspathic Porcelain

Background: Sometimes, porcelain restorations experience some degree of colour change in oral environment, which could be related to the quality of diet and surface roughness of these restorations. Objective: The aim of this in-vitro study was to evaluate the influence of Arabic-Coffee on the overall color of glazed or polished porcelain veneers fabricated from four different porcelain materials and two different thicknesses. Materials and Methods: A total of 160 porcelain disc of tested specimens were fabricated to a standardized thickness of 1.00 mm and 0.6mm using the following materials: Feldspathic porcelain, Zircon, E-max Press, and E-max CAD; (80 discs for each thickness and 20 specimens of each material used). Veneer specimens from each material were randomly divided into two subgroups (n = 10): 10 specimens were kept as glazed, were the other 10 tested specimens were adjusted with diamond burs, and then polished with Ivoclar Vivadent ceramic polishing kits using the recommended protocol for polishing provided by the company. A color of all tested specimens was measured using Vita Easy Shade Spectrophotometer. Then, all specimens were immersed in Arabic coffee (Al Mosafer Coffee, Saudi Arabia) and theromcycled for 1 week, and the colors of all tested specimens were then recorded again. Results: It was shown that there is a significant difference in the average color changes before and after immersing in Arabic-Coffee for all materials and thicknesses used in the current study. In-addition, significant differences in color changes were noticed between glazed and polished specimens. Moreover, colour change caused by the coffee was not significantly related to the thickness of the specimens used. Conclusion: Color stability of porcelain materials could be affected by surface treatment whether glazing or polishing. All aesthetic restorations should be deglazed whenever any adjustments have been done to maintain the color match and stability in an oral environment. Also, Arabic-Coffee is considered as a staining drink to a limited extend where patient should be assured to maintain their oral health to maintain the colour stability of their restorations.

scholarly journals Evaluation of color stability of different temporary restorative materials

2015 ◽  
Vol 44 (5) ◽  
pp. 262-267 ◽  
Author(s):  
José Vitor Quinelli Mazaro ◽  
Luiz Miguel Minani ◽  
Adriana Cristina Zavanelli ◽  
Caroline Cantieri de Mello ◽  
Cleidiel Aparecido Araújo Lemos
Keyword(s):  
Storage Time ◽  
Color Change ◽  
Artificial Saliva ◽  
Color Stability ◽  
Time Interval ◽  
Acrylic Resins ◽  
Significant Difference ◽  
Restorative Materials ◽  
Before And After ◽  
Level Of Significance

AbstractIntroductionTemporary restorative materials are widely used, however, little is know about their color stability.Objectiveto evaluate the color stability of the following temporary restorative materials: acrylic and bis-acrylic resins after immersion in pigmenting solutions for different periods of storage.Material and methodFour materials were tested (Dêncor/Clássico, Protemp 4/3M ESPE; Structur 2 SC/Voco; Luxatemp AM Plus/DMG) and 30 test specimens (15 mm in diameter and 2 mm thick) per material were fabricated. They were divided according to the storage medium (artificial saliva, saliva + cola type soda, and saliva + coffee) and storage time intervals (2, 5, 7 and 15 days). Color measurements were made before and after immersions, with use of a spectrophotometer, by means of the CIE L*a*b* system. The data were analyzed by the analysis of variance and the Tukey Test, at a level of significance of 5%.ResultAcrylic resin presented greater color stability in comparison with bis-acrylic resins (p<0.001). When bis-acrylic resins were compared no significant difference was observed between the resins Structur and Luxatemp (p=0.767). As regards solutions tested, coffee showed the highest color change values (p<0.001), and the longer the storage time interval, the greater was the color change in all the temporary restorative materials analyzed (p<0.001).ConclusionAcrylic resin presented greater color stability in comparison with bis-acrylic resins (p<0.001). Coffee caused the greatest color change, and immersion time was determinant in color stability of the temporary materials analyzed.

scholarly journals Effect of an Optical Whitening Toothpaste on Color Stability of Tooth-Colored Restorative Materials

2020 ◽  
Vol 14 (01) ◽  
pp. 085-091
Author(s):  
Sedighe Sadat Hashemikamangar ◽  
Farnoosh Hoseinpour ◽  
Nazanin Kiomarsi ◽  
Mehrzad Gholampour Dehaki ◽  
Mohammad Javad Kharazifard
Keyword(s):  
Statistical Analysis ◽  
Color Change ◽  
Color Stability ◽  
Composite Resins ◽  
Time Points ◽  
Color Changes ◽  
Honestly Significant Difference ◽  
Significant Difference ◽  
Resin Modified Glass Ionomer ◽  
Composite Samples

Abstract Objectives This study aimed to assess the effect of an optical whitening toothpaste on color stability of microhybrid, nanofilled, and microfilled composite resins and resin-modified glass ionomer (RMGI) cement in comparison of two other toothpastes. Materials and Methods In this experimental study, disc-shaped composite samples were fabricated. The samples were then polished using silicon carbide papers. Twenty-seven samples of each material were fabricated and subjected to colorimetry using a spectrophotometer. Each group of material was then divided into three subgroups for the application of conventional whitening and whitening containing blue covarine toothpastes. One operator brushed the samples with an electric soft toothbrush with circular motion twice a day, each time for 30 seconds. Colorimetry was performed at 0, 1, 7, 30, and 90 days. Statistical Analysis Two-way analysis of variance (ANOVA), one-way ANOVA, and Tukey’s honestly significant difference (HSD) test were used for statistical analysis. Results The interaction effect of type of restorative material and time on ∆E was not significant at baseline or 1 day (p > 0.05). The effect of type of toothpaste on ∆E was not significant at baseline or 1 day (p = 0.78) but the effect of type of material was significant (p < 0.05). The toothpastes had significantly different effects on ∆E of Z250 at all time points (p < 0.05) except for ∆E0–30 (p = 0.106). The toothpastes had significantly different effects on ∆E of Z350 and Gradia at all time points (p < 0.05). The same was true for RMGI except for ∆E0–7 (p = 0.43) and ∆E0–90 (p = 0.52). The majority of color changes caused by toothpastes were not clinically perceivable (∆E < 3.3), except for ∆E0–90 by the whitening toothpaste (∆E = 9), ∆E0–90 by the conventional toothpaste for Z350 (∆E = 3.9), and ∆E0–1 by the whitening toothpaste for RMGI (∆E = 3.7). Conclusion The color change of all composite samples was not clinically perceivable (<3.3) at all time points, which shows that the tested toothpastes do not cause a significant change in color of composite materials.

scholarly journals Comparison of Copper Level and Color Vision in Pulmonary Tuberculosis Patients Before and After Ethambutol Treatment in Category I and II

2020 ◽  
Vol 3 (1) ◽  
pp. 19-25
Author(s):  
Febria Restissa ◽  
Ahmad Rasyid ◽  
Devi Azri Wahyuni
Keyword(s):  
Color Vision ◽  
Total Error ◽  
T Test ◽  
Wilcoxon Test ◽  
Copper Level ◽  
Tuberculosis Patients ◽  
Vision Disorder ◽  
Significant Difference ◽  
Before And After ◽  
Paired T Test

ABSTRACT Objective : to determine the correlation between duration of ethambutol and copper levels in serum with color vision disorder examined with Farnsworth Munsell 100 Hue (FM100) in patients with tuberculosis. Methods: This study was an explorative observation of 20 samples during November 2017 - January 2018 period. Comparative analysis using independent t-test, paired t-test, Wilcoxon test and Mann-Whitney test, while correlation analysis using Spearman's test and Pearson's test.  Results: There was a significant difference of FM100 value before and after in category I (p=0.000) with increase of total error value 11.80+5.31 or category II (p=0.000) with increase of total error value 15.00+7.41. There was significant difference of Cu2+ level before and after in category I (p=0.005) with decrease of Cu2+ level 15.57+5.04 mg/dL or category II (p=0.005) with decrease of Cu2+ level 31.66+7.35 mg/dL. There was significant correlation between color vision and duration of ethambutol (p=0.000), but there was no significant correlation of Cu2+ with color vision (p>0.05). Conclusion: The duration of Ethambutol was related to changes in color vision examined with FM100.

scholarly journals Evaluation of color change in acrylic and bisacrylic resin resins in different solutions

2018 ◽  
Vol 5 (4) ◽  
pp. 76
Author(s):  
Mone Laiz Bortoli ◽  
Cristina Von Appen ◽  
Camila Longoni ◽  
Carmen Beatriz Borges Fortes ◽  
Jefferson Tomio Sanada
Keyword(s):  
Color Change ◽  
Color Stability ◽  
Acrylic Resin ◽  
Color Variation ◽  
Color Reading ◽  
Control Group ◽  
Color Changes ◽  
Significant Difference ◽  
Prosthesis Material ◽  
Chlorhexidine Solution

Aim: This work aimed to evaluate the color stability of an acrylic resin chemically activated (ARCA) using different handling techniques, and a bisacrylic resin when exposed to different pigmentation solutions.Material and Methods: Silicon matrixes were confectioned (10x10x3mm) to be used as specimens. The groups were designed as follows: Group Pot, Group Brush, Group Manufacturer and Group Bisacrylic (n=18). Each group was exposed to three different pigmentation solutions: distilled water, coke and chlorhexidine digluconate 0.12%. Three readings were performed for each specimen using a spectrophotometer, and the evaluations were carried out in three different time. After the color reading, three averages and the standard deviation of variation were performed after 24 hours (T1), 7 days (T2) and 14 days (T3). Data were submitted to the ANOVA and 2 criteria and Tukey (P<0.05) in the statistical software SSPS 18 for Macintosh (SPSS Inc., Chicago, USA).Results: When compared the solutions in each group of material, there was no statistically significant difference, except for T3, where the group Dencor Brush and Bisacrylic demonstrated higher color variation in all the solutions, even in the control group, and the values in Chlorhexidine higher than the other, showing greater instability after 14 days.Conclusions: With the results, bisacrylic resin used as provisory prosthesis material presents greater color instability than the ARCA, when submitted to different solutions. Bisacrylic resin and Dencor Brush present significantly visible color changes in chlorhexidine solution after 14 days. All the materials in coke solution present homogeneity in the color change after 7 days exposition to the solution, with no visible color change.

scholarly journals Analysis The Level Of Cattleman’s Knowledge Using The T-Test And Wilcoxon In Maju Farmer Group

2020 ◽  
Vol 15 (1) ◽  
pp. 1
Author(s):  
Bismi Widi Hastari ◽  
Dyah Gandasari ◽  
Harry Harry
Keyword(s):  
T Test ◽  
Statistical Software ◽  
City Administration ◽  
Group Data ◽  
Significant Difference ◽  
Urine Production ◽  
Before And After ◽  
Post Test ◽  
Level Of Knowledge ◽  
Paired T Test

Tani Maju farmer group is one of the farming groups located in Rorotan Village, Cilincing District, North Jakarta City Administration. This group has a lot of sheep and advanced management. Despite they manage their sheep well, they are not well informed on how to manage the sewage from their castles (faces and urine). So far, they just throw away the sewage or gave them to fellow farmers. This study aimed to analyze the level of farmers' knowledge in making use of sheep's urine to be degraded into bio urine in the Maju Farmer group. Data was collected through the pre-test and post-test. The data were analyzed using paired t-test and Wilcoxon statistical software (IBM SPSS Statistics 25). The results of the study showed that farmers' knowledge in sewage (Urine) management increased; there is a significant difference in farmers' level of knowledge in bio urine production before and after bio urine extension.

scholarly journals Perubahan antropometri, kalsium darah, tekanan darah, dan kebugaran fisik akibat asupan susu kambing pada olahragawan

2021 ◽  
Vol 17 (3) ◽  
pp. 133
Author(s):  
Yusni Yusni ◽  
Amiruddin Amiruddin
Keyword(s):  
Blood Pressure ◽  
Physical Fitness ◽  
Intervention Group ◽  
Goat Milk ◽  
Sports Nutrition ◽  
T Test ◽  
Muscle Endurance ◽  
Blood Calcium ◽  
Significant Difference ◽  
Before And After

Changes in anthropometry, blood calcium, blood pressure, and physical fitness due to goat's milk intake in athletesBackground: The intake of healthy-balanced nutrition is needed by athletes. The complex nutritional content of goat milk such as protein, fat, carbohydrate, vitamin, and mineral acts as sports nutrition during and after training. Objective: This study aims to analyze the effects of goat milk on physical fitness, anthropometrics, blood calcium, and blood pressure in athletes. Methods: A clinical trial was conducted using healthy human subjects. Subjects were runners (n=10 people) as the control group and gymnasts (n=19 people) as the treatment group, male, age 21-27 years, and healthy. Bodyweight (BW), Height, and Body Mass Index (BMI), blood calcium, Systolic Blood Pressure (SBP), Diastolic Blood Pressure (DBP), and physical fitness were examined two times, before and after consuming goat milk. Intervention: fresh goat milk, 250 mg/day (after dinner), and given for 90 days. Data were analyzed using a paired sample t-test and independent sample t-test. Results: There was no difference between BW (p=0.07), BMI (p=0.08), and DBP (p=0.24), but instead there was a significant difference in SBP (p=0.00) before and after goat milk intervention in the experimental group. Blood calcium was significantly increased (p=0.00) in the intervention group, whereas reverse decreased significantly (p=0.02) in controls. A significant difference before and after therapy was found in speed (p=0.00), arm muscle endurance (p=0.01), an-aerobic endurance (p=0.00), agility (p=0.02), however, there was no significant difference between leg muscle power (p=0.13), flexibility (p=0.23), an endurance of abdominal muscles (p=0.26), VO2 max (p=1.15) in the intervention group. Conclusions: Regular consumption of goat milk can reduce SBP, increase blood calcium levels, and improve physical fitness (speed, arm muscle endurance, anaerobic endurance, and agility) in athletes. Goat milk is an essential role in sports nutrition for physical fitness and athlete's health.

scholarly journals Learning The Strategy of Reasoning Through Marzano Dimensional Mastery Learning Model Among Form Four Students for The Topic Of Differentiation

2017 ◽  
Vol 9 (1-4) ◽  
Author(s):  
Mohamad Nizam Arshad ◽  
Noor Azean Atan ◽  
Abdul Halim Abdullah ◽  
Mahani Mokhtar ◽  
Mohd Salleh Abu
Keyword(s):  
Teaching And Learning ◽  
Learning Strategy ◽  
Implementation Process ◽  
T Test ◽  
Education Development ◽  
Paired Samples ◽  
Significant Difference ◽  
Before And After ◽  
Post Test ◽  
Reasoning Skills

Reasoning skills are very important in encouraging students to think more critically and logically, as depicted in the Malaysian Education Development Plan (2013-2025). Therefore, this study looked into improving the Differentiation Reasoning Level (DRL) of reasoning skills among students for a topic in the Additional Mathematics subject,  known as Differentiation, through reasoning learning strategy. The study participants consisted of a total of 31 students from a secondary boarding school in Johor, selected through a purposive sampling method. A pre-test was carried out for the participants, from the advanced level, followed by a number of repetition tests, before the post-test assessment was conducted. The data collection for this study employed a set of Reasoning Test on Differentiation (RTD) and 10 sets of learning activities on Differentiation based on modified Marzano Rubric for Specific Task of Situations (1992). This dimension involved four types of reasoning skills, namely,  comparison, classification, inductive, and deductive. The survey data, through paired samples t-test, revealed a significant difference between the mean scores in pre-test and post-test (p <0.05). In addition, the paired sample t-test showed a significant difference on the level of reasoning among students from each construct in the reasoning skills before and after using this module. In conclusion, the Marzano Model of Dimensional Learning (1992) is a thinking skill model that can help improve students' reasoning skills. The model covers analysis aspects of what has been learned by implementing the process of identifying reasons, which will help students to add and expand their knowledge. The findings also implied that, the processes of teaching and learning play an important role in ensuring students’ capability to emphasize on the implementation process of reasoning skills

scholarly journals The effect of optical brightening toothpaste on the color stability of esthetic restorative materials

2021 ◽  
Vol 11 (Suppl. 1) ◽  
pp. 81-85
Author(s):  
Firdevs Kahvecioğlu ◽  
Elçim Çoban ◽  
Hayriye Esra Ülker
Keyword(s):  
Color Change ◽  
Calculated Data ◽  
Color Stability ◽  
Color Changes ◽  
Significant Difference ◽  
Restorative Materials ◽  
Cherry Juice ◽  
Native Speakers Of English ◽  
Materials Used ◽  
Post Hoc

Aim: The aim of this study is to evaluate the effects of whitening toothpaste applications on the color stability of different tooth-colored restorative materials (Fuji IX, GC Fuji II LC, Equia Forte, and Kerr Point 4)  Methodology: Standardized fourty disc-shaped specimens were prepared from esthetic restorative materials and polished. The baseline color values of each specimen were then measured using a spectrophotometer, according to the Commission Internationale de l'Eclairage L*, a*, and b* (CIELAB) color scale. Ten specimens from each group were then immersed in two different beverages (cherry juice and coke) for seven days. After immersion, the color value of each specimen was re-measured. Each sample was brushed with whitening toothpaste for 30 seconds using an electric toothbrush. The samples were kept in distilled water at room temperature and brushing continued twice a day for seven days. The color change value, Delta E (ΔE), was calculated. Data were analyzed by two-way ANOVA and post hoc Tukey's test. Results: When the results were evaluated, after the colored samples had been brushed with whitening toothpaste, a difference was found between the Delta E values according to the materials used (p<0.001), but no difference was found in relation to the beverages (p>0.001). When the values of the color changes were evaluated after the first brushing with whitening toothpaste and before the specimens were colored with drinks, a difference was observed in the Fuji II cola, Fuji II cherry, and Equia Forte cola groups (p<0.05). When the values of the color changes were evaluated for specimens in which brushing had been done twice a day for seven days with whitening toothpaste and before they were colored with drinks, a significant difference was observed in the Fuji II cherry and Equia Forte cola groups (p<0.05). Conclusion: Using Signal White Now whitening toothpaste for 2 min 2 times a day for seven days caused significant changes in the color of the restorative materials. The color change is dependent upon the type of restorative material that is used.   How to cite this article: Kahvecioğlu F, Çoban E, Ülker HE. The effect of optical brightening toothpaste on the color stability of esthetic restorative materials. Int Dent Res 2021;11(Suppl.1):80-4. https://doi.org/10.5577/intdentres.2021.vol11.suppl1.13   Linguistic Revision: The English in this manuscript has been checked by at least two professional editors, both native speakers of English.

scholarly journals EFEKTIFITAS METODE MENGAJAR KESELURUHAN DENGAN METODE MENGAJAR BAGIAN PERBAGIAN TERHADAP HASIL BELAJAR MENGUMPAN (PASSING) KAKI BAGIAN DALAM PADA PERMAINAN FUTSAL MAHASISWA FIK UNM

2020 ◽  
Vol 12 (1) ◽  
pp. 48
Author(s):  
Sudirman Sudirman ◽  
Andi Mas Jaya
Keyword(s):  
Experimental Method ◽  
Learning Outcomes ◽  
Degrees Of Freedom ◽  
Teaching Method ◽  
Treatment Method ◽  
T Test ◽  
Analysis Technique ◽  
Significant Difference ◽  
Before And After

This study aims to find out which is more effective between the overall method and the teaching method part by section on learning outcomes passing (passing) the inner leg in students who take Futsal learning. This research was carried out by an experimental method in total sampling. Thedata analysis technique used to test the hypothesis is the t-test, at a significant level α= 0.05, starting with calculating the t-count value to compare with the t-table value at a significant level of 95%. (1) The whole method is obtained by t-count = 4, the value listed in t-table with degrees of freedom (dk) = 15-1 = 14. A significant level of 5% is 2.14, so t-count> t-table, means that there is a convincing (significant) difference before and after being given the overall method treatment. (2) The teaching method part of division is obtained the value of t-count = 3.7, the value listed in t-table with degrees of freedom (dk) = 15-1 = 14. Significant level of 5% is 2.14, so t-count> t-table, means that there is a convincing (significant) difference before and after the treatment method is given in part. And (3) The overall method and the part-by-part teaching method obtained t-count = 3.2, the values listed in t-table with degrees of freedom (dk) = 15 + 15-2 = 28. A significant level of 5% is 2.05. So t-count> t-table.

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