scholarly journals The effect of the thermoplastic nilon enterprises (valplast) on clove extract (syzygium aromaticum) in various concentrations on the color change

2017 ◽  
Vol 2 (3) ◽  
pp. 180
Author(s):  
Niken Wibawaningtyas ◽  
Dewi Kristiana ◽  
Niken Probosari
Keyword(s):  
Light Intensity ◽  
Sample Size ◽  
Color Change ◽  
The Other ◽  
Syzygium Aromaticum ◽  
Test Results ◽  
Color Changes ◽  
Flower Extract ◽  
Significant Difference ◽  
One Way Anova

Objective: To investigate the effect of soaking of thermoplastic nylon (valplast) on clove flower extract (syzygium aromaticum) as a denture cleanser with different concentration 0.8%, 1%, 1.2%, 1.4%, and 1.6% to the color change of thermoplastic nylon.Material and Methods: 30 samples were divided into 6 groups. The sample size is (10x10x1) mm. The first group was immersed in sterile aquades and the other groups were immersed in clove flower extracts of 0.8%, 1%, 1.2%, 1.4%, and 1.6% for 12 days. The light intensity then measured using densitometer.Results: One way anova test results obtained value 0.174 (p>0.05) which indicates that there is no significant difference in each group.Conclusions: This study are darker discoloration of the thermoplastic nylon at a concentration of 1.6% and lower color changes occurring at a concentration of 0.8%.

scholarly journals Chromatic analysis of orthodontic resin bonding agents exposed to different antiseptic mouthrinses

2021 ◽  
Vol 26 (2) ◽  
Author(s):  
Alana Dantas MOREIRA ◽  
Jamille Barros FERREIRA ◽  
Claudia Trindade MATTOS ◽  
Mariana MARQUEZAN ◽  
Mônica Tirre de Souza ARAÚJO ◽  
...  
Keyword(s):  
Artificial Aging ◽  
Color Change ◽  
Time Interval ◽  
Simulation Methods ◽  
Test Results ◽  
Bonding Agents ◽  
Color Changes ◽  
Significant Difference ◽  
Post Hoc ◽  
Resin Bonding

ABSTRACT Objective: To assess the color of different orthodontic resin bonding agents exposed to three antiseptic mouthrinses for a prolonged time interval (10-year aging simulation). Methods: 160 specimens were distributed into four groups, according to the orthodontic resin bond agent (Concise, Transbond XT, Transbond Plus Color Change, and Natural Ortho). Each group was exposed to different antiseptic mouthrinses: alcohol-based (Listerine®), alcohol-free (Oral-B®), chlorhexidine (Periogard®) and distilled water as the control. Specimens were submitted to two cycles of staining and artificial aging. Color was evaluated by means of a digital spectrophotometer at the beginning of the experiment and after every cycle. The system used to assess color changes was the CIE L*a*b*. Data was analyzed using the ANOVA and Tukey post-hoc test. Results: After simulation of 10 years of aging, Transbond XT and Natural Ortho composites presented no statistically significant differences in ∆E when exposed to different mouthrinses. The Concise composite specimens exposed to alcohol-free mouthrinse presented a significant difference when compared with specimens from the same group exposed to other antiseptic mouthrinses. Transbond Plus Color Change specimens exposed to chlorhexidine mouthrinse and to alcohol-containing mouthrinse presented a significant difference when compared with the specimens from the group exposed to water and alcohol-free antiseptic. Conclusion: All orthodontic resin bonding agents tested presented clinically perceptible color changes when exposed to at least one of the mouthrinses, except for the Natural Ortho composite. The Concise composite exposed to the alcohol-free solution was the resin that presented the highest color change values.

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 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 PENGARUH VARIASI KONSENTRASI EKSTRAK DAUN BELIMBING WULUH (Averrhoa bilimbi L) TERHADAP KARAKTERISTIK SEDIAAN SALEP DENGAN MENGGUNAKAN BASIS PEG 4000 dan PEG 400

2021 ◽  
Vol 2 (02) ◽  
pp. 7
Author(s):  
Tri Puji Lestari
Keyword(s):  
Leaf Extract ◽  
Homogeneity Test ◽  
Test Results ◽  
Peg 400 ◽  
Cell Tissue ◽  
Peg 4000 ◽  
Significant Difference ◽  
Ointment Formulation ◽  
The Difference ◽  
One Way Anova

ABSTRAK Daun Belimbing Wuluh (Averrhoa bilimbi L) memiliki kandungan tanin dan flavonoid. Kandungan Flavonoid dan Tanin yang terdapat dalam belimbing wuluh mampu memberikan efek untuk menyembuhkan kulit yang mengalami kerusakan jaringan sel akibat luka bakar. Ada beberapa cara untuk pemanfaatan Daun Belimbing Wuluh antara lain dengan dibuat dalam sediaan salep. Pada penelitian ini salep dibuat dengan variasi konsentrasi ekstrak daun belimbing wuluh sebesar 10%, 15%, dan 20%  mengguankan basis PEG 4000 dan PEG 400. Ekstrak daun belimbing wuluh diperoleh menggunakan metode maserasi dengan menggunakan etanol 70% sebagai pelarutnya. Salep yang sudah dibuat kemudian dilakukan uji karakteristik meliputi uji organoleptis, homogenitas, daya lekat dan uji daya sebar. Hasil uji organoleptis dan homogenitas di analisa secara deskrisptif kemudian hasil uji daya lekat dan uji daya sebar di analisa dengan menggunakan analisa statistik one-way ANOVA.  Hasil penelitian menunjukan bahwa salep berbentuk semipadat dengan warna hijau muda sampai hijau kehitaman. Hasil uji homogenitas di dapatkan untuk ketiga formula adalah homogen. Nilai daya sebar pada ketiga formula menunjukan perbedaan yang signifikan, pada hasil uji daya lekat dan pH didapatkan tidak ada perbedaan yang signifikan terhadap ketiga formulasi. Dengan demikian perbedaan konsentrasi zat aktif yang digunakan berpengaruh terhadap daya sebar sediaan salep ekstrak daun belimbing wuluh. Kata kunci: Averrhoa bilimbi L; Salep; PEG   ABSTRACT Carambola leaf Wuluh (Averrhoa bilimbi L) contains tannins and flavonoids. The content of flavonoids and tannins contained in starfruit able to give effect to heal skin damaged cell tissue from burns. There were several ways for  utilization  of  Averrhoa  bilimbi  L.  among  others,  made  some  preparations, especially ointment formulation. This study aims to formulate leaf extract ointment preparation starfruit (Averrhoa bilimbi L) with various concentrations of 10%, 15%, and 20% using the PEG 4000 and PEG 400 as a base. Leaf extract obtained from meserasi leaf Averrhoa bilimbi  L  with  70%  ethanol. The ointment that has been made is then subjected to characteristic tests including organoleptic tests, homogeneity, adhesion and spreadability tests. The results of the organoleptic test and homogeneity were analyzed descriptively, then the results of the adhesion test and the spreadability test were analyzed using one-way ANOVA statistical analysis. The results showed that the ointment was semisolid, light green to blackish green. The homogeneity test results obtained for the three formulas are homogeneous. The value of the spreadability of the three formulas showed a significant difference, the results of the adhesion and pH test showed no significant difference between the three formulations. Thus the difference in the concentration of the active substance used affects the spreadability of the starfruit leaf extract ointment. Keywords: Averrhoa bilimbi L; ointment; PEG

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 A quantitative evaluation of different regions of skin in adult Iranian native sheep

2013 ◽  
Vol 58 (No. 5) ◽  
pp. 260-263
Author(s):  
B. Mobini
Keyword(s):  
Connective Tissue ◽  
The Other ◽  
Sebaceous Glands ◽  
Lattice Line ◽  
Arrector Pili Muscle ◽  
Significant Difference ◽  
Native Sheep ◽  
One Way Anova ◽  
Quantitative Evaluations ◽  
Apparently Healthy

The present investigation aimed to evaluate the histomorphometric features of the skin of the Iranian native sheep (Bakhtiari breed). A total of 24 apparently healthy Iranian Bakhtiari sheep, aged 1&ndash;2 years were analysed and categorised on the basis of sex (12 females and 12 males). Samples were taken as small pieces from different regions of the skin, fixed and stained with H&amp;E. The quantitative evaluations of different regions of skin were carried out using lattice line graticule (5 &times; 5) and light microscopy. The Student t-test and one-way ANOVA were used to analyse the data and detect significant differences. Results showed that the volume densities of different histological structures varied between sexes and among the different regions. No significant difference was observed in volume densities of sebaceous glands, arrector pili muscles and blood vessels, but the other parameters studied differed significantly among the regions. Except for the arrector pili muscle and connective tissue, the volume densities of other tissue structures were significantly affected by sex. &nbsp;

scholarly journals Futsal World Cup: Differences Created by Winning, Losing and Drawing Variables in Scored Goals and Offensive Variations

2018 ◽  
Vol 6 (5) ◽  
pp. 65
Author(s):  
Melih Balyan ◽  
Faik Vural
Keyword(s):  
The Other ◽  
Physiological Effects ◽  
World Cup ◽  
Game Analysis ◽  
Positional Games ◽  
Other Hand ◽  
Movement Characteristics ◽  
Significant Difference ◽  
Game Forms ◽  
One Way Anova

Futsal, which can be defined as a new sports branch compared to football, has some shortcomings in comparison with football as well according to the studies carried out.  Studies have rather focused on the movement characteristics of futsal players during the game and the physiological effects of games. On the other hand, there are only a limited number of studies conducted on game analysis. Therefore, as the primary goal of the present study, offensive variations that ended up as goals in all matches played in Futsal World Cup were analyzed. As the secondary goal, these parameters were studied in terms of the teams’ winning-drawing-losing states during games. In the present study, a total of 52 matches of the teams playing in 2016 FIFA Futsal World Championship were analyzed. The analyses of the games were performed using the hand notation method. Differences between offensive variations (Diagonal, parallel, central and transition game forms, set games etc.) and the goals scored (shots taken, shots at goal, the area where the goals were scored, the way the goals were scored, the area where the foot hit the ball, block shoots etc.) were determined with One-way Anova and Kruskal-Wallis tests on SPSS version 20 in terms of 3 variables (win-loss-draw). The findings show that the winning teams had significantly more shots than the losing teams (10.80, 95%CI (from 3, 73 to 17, 87) and that the number of shots at goal was also higher (5.82, 95%CI (from 2, 43 to 9, 91) in terms of the teams’ winning-losing-drawing states. However, no statistically significant difference was found between the areas where the shots were taken and the points they ended up at the goal. As for position specific games, on the other hand, statistically significant differences were found in terms of winning, losing and drawing states during the game (central= χ2(2) = 10.500, p = .005, diagonal= χ2(2) = 17.142, p = .000, parallel= χ2(2) = 10.931, p = .004, transition= χ2(2) = 28,587 p = .000). No statistically significant difference was found between set games ending up with goals and the teams’ game score variables. The results obtained concerning offensive variations in a superior futsal championship reveal that positional games of dynamic style could be much more effective compared to set games of static starting positions in winning the game. Moreover, producing shooting positions and their accuracy levels seem to be an important factor affecting success. According to these results, it can be recommended that the trainings to be held should be designed to improve positional games that these should be planned as practices that result in shots.

scholarly journals Evaluation of dental enamel color after fixed orthodontic therapy using two types of protectors to prevent white spot lesions (A prospective clinical study)

2020 ◽  
Vol 32 (2) ◽  
pp. 17-21
Author(s):  
Yasir Allabban
Keyword(s):  
Color Change ◽  
Dental Enamel ◽  
White Spot ◽  
P Value ◽  
Prospective Clinical Study ◽  
White Spot Lesions ◽  
Significant Difference ◽  
Before And After ◽  
Fixed Appliances ◽  
One Way Anova

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 at p value <0.05, while there were highly significant differences in value of ∆E between middle thirds and the gingival thirds in all groups. Conclusion: The icon infiltrant and clinpro varnish have no effect on color of the enamel when used before the bonding procedure. Color change ∆E occurring in middle third is higher than that of the gingival third. Keywords: Color change, protector, white spot lesions

scholarly journals PEMANFAATAN EKSTRAK BUNGA KECOMBRANG (Etlingera elatior jack R.M.sm) SEBAGAI LARVASIDA NYAMUK (Culex quinquifasciatus Say)

2020 ◽  
Vol 10 ◽  
pp. 44-49
Author(s):  
Indra Rahmawati ◽  
Bagus Uda Palgunadi ◽  
Lailia Dwi Kusuma Wardhani ◽  
Ni Made Dewi Lestari
Keyword(s):  
Positive Control ◽  
Negative Control ◽  
Control Group ◽  
Mosquito Larvae ◽  
Test Results ◽  
Experimental Animals ◽  
Flower Extract ◽  
The One ◽  
One Way Anova ◽  
Etlingera Elatior

This study aims to determine the effectiveness of kecombrang flower extract (Etlingera elatior jack R.M.sm) on the death of Culex quenquefasciatus Say larvae. Experimental animals used were Culex quenquefasciatus Say larvae, amounting to 625 tails. The design used was a randomized complete design with 5 treatments and 5 replications. The five treatments consisted of two test groups, namely the treatment group consisting of concentrations of 5%, 10%, 15%, and the control group consisting of positive control namely abate and negative control namely aquades. Observation of mosquito larvae death was done every 2 hours for 12 hours. The data obtained were analyzed using the one-way ANOVA test and continued with the Duncan test. Based on the results of the one way ANOVA calculation the value of sig.0.00 <0.05 means that there are significant differences between treatments. Duncan test results on the treatment of 10% and 15% kecombrang flower extract have the ability as a larvicide high and equal to positive control (abate). Based on the results of the study it was concluded that the extract of kecombrang flower (Etlingera elatior jack R.M.sm) had the ability to larvae against the Culex quenquefasciatus Say mosquito.

scholarly journals THE SCIENTIFIC LITERACY PERFORMANCE OF GIFTED YOUNG SCIENTIST CANDIDATES IN THE DIGITAL AGE

2021 ◽  
Vol 40 (2) ◽  
pp. 467-498
Author(s):  
Muhammad Mifta Fausan ◽  
Herawati Susilo ◽  
Abdul Gofur ◽  
Sueb Sueb ◽  
Farrah Dina Yusop
Keyword(s):  
Scientific Literacy ◽  
Grade Level ◽  
Young Scientist ◽  
Test Results ◽  
Essential Question ◽  
Significant Difference ◽  
Technological Developments ◽  
Literacy Performance ◽  
The One ◽  
One Way Anova

Scientific Literacy (SL) is an important competency to deal with and keep up with the increasingly sophisticated technological developments. However, information about the SL of prospective gifted young scientists over 15 years old has not been widely revealed holistically. Therefore, this survey research aimed to investigate the SL performance of prospective gifted young scientists holistically and compare the SL performance based on the grade level. A total of 278 students from a public senior high school in Jombang Regency, East Java Province, Indonesia, participated in this research. They were asked to take the SL test with 18 essential question items. As a result, the participants still showed low SL performance (total success rate = 40). The one-way ANOVA test results indicated no significant difference in the participants' SL performance based on the grade level. Therefore, three recommendations were provided: teachers should use various learning models, SL should be an explicit focus in science and non-science classrooms, and schools need to be equipped with supporting facilities to accommodate student readiness to practice SL.

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