The Experts below are selected from a list of 225 Experts worldwide ranked by ideXlab platform
A C Patil - One of the best experts on this subject based on the ideXlab platform.
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comparison of effectiveness of Abrasive and enzymatic Action of whitening toothpastes in removal of extrinsic stains a clinical trial
International Journal of Dental Hygiene, 2015Co-Authors: P A Patil, Anil V Ankola, M I Hebbal, A C PatilAbstract:Objective To compare the effectiveness of Abrasive component (perlite/calcium carbonate) and enzymatic component (papain and bromelain) of whitening toothpaste in removal of extrinsic stains. Methods This study is a randomized, triple blind and parallel group study in which 90 subjects aged 18–40 years were included. At baseline, stains scores were assessed by Macpherson's modification of Lobene Stain Index and subjects were randomly assigned to two groups with 45 subjects in each. Group 1 used whitening toothpaste with enzymatic Action and group 2 with Abrasive Action. After 1 month, stain scores were assessed for the effectiveness of the two toothpastes and 2 months later to check the stain prevention efficacy. Wilcoxson's test was used to compare between baseline 1 and 2 months stain scores, and Mann–Witney U-test was applied for intragroup comparison. Results The mean baseline total stain score for the subjects allocated to the enzymatic toothpaste was 37.24 ± 2.11 which reduced to 30.77 ± 2.48 in 1 month, and for the Abrasive paste, total stain reduced from 35.08 ± 2.96 to 32.89 ± 1.95. The reductions in total stain scores with both the pastes were significant compared with baseline stain scores (at 1 month Group 1, P = 0.0233 and Group 2, P = 0.0324; at 2 months, Group 1 P = 0.0356). Both the toothpastes proved to be equally good in removal of extrinsic stains; however, the enzymatic paste showed better results as compared to Abrasive toothpaste. Conclusion Whitening toothpaste with Abrasive Action and enzymatic Action are equally effective in removal of extrinsic stains; however, whitening toothpaste with Abrasive Action needs to be used with caution.
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Comparison of effectiveness of Abrasive and enzymatic Action of whitening toothpastes in removal of extrinsic stains – a clinical trial
International Journal of Dental Hygiene, 2014Co-Authors: P A Patil, Anil V Ankola, M I Hebbal, A C PatilAbstract:Objective To compare the effectiveness of Abrasive component (perlite/calcium carbonate) and enzymatic component (papain and bromelain) of whitening toothpaste in removal of extrinsic stains. Methods This study is a randomized, triple blind and parallel group study in which 90 subjects aged 18–40 years were included. At baseline, stains scores were assessed by Macpherson's modification of Lobene Stain Index and subjects were randomly assigned to two groups with 45 subjects in each. Group 1 used whitening toothpaste with enzymatic Action and group 2 with Abrasive Action. After 1 month, stain scores were assessed for the effectiveness of the two toothpastes and 2 months later to check the stain prevention efficacy. Wilcoxson's test was used to compare between baseline 1 and 2 months stain scores, and Mann–Witney U-test was applied for intragroup comparison. Results The mean baseline total stain score for the subjects allocated to the enzymatic toothpaste was 37.24 ± 2.11 which reduced to 30.77 ± 2.48 in 1 month, and for the Abrasive paste, total stain reduced from 35.08 ± 2.96 to 32.89 ± 1.95. The reductions in total stain scores with both the pastes were significant compared with baseline stain scores (at 1 month Group 1, P = 0.0233 and Group 2, P = 0.0324; at 2 months, Group 1 P = 0.0356). Both the toothpastes proved to be equally good in removal of extrinsic stains; however, the enzymatic paste showed better results as compared to Abrasive toothpaste. Conclusion Whitening toothpaste with Abrasive Action and enzymatic Action are equally effective in removal of extrinsic stains; however, whitening toothpaste with Abrasive Action needs to be used with caution.
Navjot Singh Mann - One of the best experts on this subject based on the ideXlab platform.
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Abrasive Action of herbal vs non herbal toothpaste a profilometric analysis
Journal of pharmaceutical and biomedical sciences, 2017Co-Authors: Anurag Aggarwal, Shalu Krishan, Vasu Midha, Shubhpreet Kaur, Deepak Bala, Preetinder Singh, Amit Bhagat, Navjot Singh MannAbstract:Introduction Toothpaste is a dentrifice used with a toothbrush as an accessory to clean and maintain the aesthetics and health of teeth. It serves as an Abrasive that aids in removing the dental plaque and food from the teeth, assists in suppressing halitosis and delivers active ingredients to help prevent tooth decay and gum disease, thereby promoting oral health. Current trend is shifting towards alternate medicinal systems especially herbal medicines. Herbal toothpastes have received attention from the public and professionals following a number of studies which have reported beneficial effects on teeth. However, no study has been conducted on the detrimental effect of herbal toothpaste on the surface enamel owing to its Abrasiveness. So, in this study, we evaluated and compared the effect of herbal-based products with conventionally formulated tooth paste on the roughness of tooth enamel. Materials and Methods Enamel specimens were obtained from 20 freshly extracted human molars after cleaning. The enamel specimens were divided into four groups. Group A: Colgate toothpaste (which will be served as control group); Group B: Patanjali Dant Kanti toothpaste; Group C: Himalaya Hiora toothpaste; and Group D: Dabur Red toothpaste. The samples were brushed for 2 min twice daily with soft toothbrush for 15 days and were kept in distilled water. They were rinsed under running water to remove the toothpaste and stored in distilled water until readout was taken on the surface profilometric analysis for surface roughness. Conclusion Himalaya Hiora and Patanjali Dant Kanti tooth paste were less Abrasive on tooth surface compared to Colgate and Dabur red. However, Himalaya Hiora had even lesser Abrasive compared to Patanjali Dant Kanti.
Martti Toivakka - One of the best experts on this subject based on the ideXlab platform.
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Wear resistance of nanoparticle coatings on paperboard
Wear, 2013Co-Authors: Milena Stepien, Mikko Aromaa, Jarkko J. Saarinen, Gary Chinga-carrasco, Hannu Teisala, Janne Haapanen, Jyrki M. Mäkelä, Mikko Tuominen, Jurkka Kuusipalo, Martti ToivakkaAbstract:Paper can be coated with liquid flame spray (LFS) generated nanoparticles to control the wettability of its surface from hydrophilic to superhydrophobic. The adhesion of the nanoparticles on paper is of interest both for understanding the product durability during its lifetime and for product safety issues. Poor particle adhesion influences the desired functional properties and released nanoparticles cause health and environmental concerns. To investigate the wear resistance of LFS-TiO_2 and -SiO_2 coated papers, the nanoparticle surfaces were exposed to rotary abrasion tests. The changes in the samples were analyzed by contact angle measurements and high resolution field-emission scanning electron microscopy (FESEM). After Abrasive Action with another paperboard surface, only relatively small changes in wettability of superhydrophobic/hydrophilic coatings were found. A more severe Abrasive Action will remove some of the nanoparticle coating, but the hydrophobic/hydrophilic character of the surface is still maintained to large extent. The results indicate that the wear resistance of LFS nanocoated paper surfaces differs and depends on the nanoparticle material type used for the coating. This is clearly reflected as changes in surface structure shown by FE-SEM and wettability. The results can help understanding which paper-related application areas could be targeted with the LFS-nanoparticle coating process.
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Wear resistance of nanoparticle coatings on paperboard
Wear, 2013Co-Authors: Milena Stepien, Mikko Aromaa, Jarkko J. Saarinen, Gary Chinga-carrasco, Hannu Teisala, Janne Haapanen, Jyrki M. Mäkelä, Mikko Tuominen, Jurkka Kuusipalo, Martti ToivakkaAbstract:Paper can be coated with liquid flame spray (LFS) generated nanoparticles to control the wettability of its surface from hydrophilic to superhydrophobic. The adhesion of the nanoparticles on paper is of interest both for understanding the product durability during its lifetime and for product safety issues. Poor particle adhesion influences the desired functional properties and released nanoparticles cause health and environmental concerns. To investigate the wear resistance of LFS-TiO2and -SiO2coated papers, the nanoparticle surfaces were exposed to rotary abrasion tests. The changes in the samples were analyzed by contact angle measurements and high resolution field-emission scanning electron microscopy (FESEM). After Abrasive Action with another paperboard surface, only relatively small changes in wettability of superhydrophobic/hydrophilic coatings were found. A more severe Abrasive Action will remove some of the nanoparticle coating, but the hydrophobic/hydrophilic character of the surface is still maintained to large extent. The results indicate that the wear resistance of LFS nanocoated paper surfaces differs and depends on the nanoparticle material type used for the coating. This is clearly reflected as changes in surface structure shown by FE-SEM and wettability. The results can help understanding which paper-related application areas could be targeted with the LFS-nanoparticle coating process. © 2013 Elsevier B.V.
P A Patil - One of the best experts on this subject based on the ideXlab platform.
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comparison of effectiveness of Abrasive and enzymatic Action of whitening toothpastes in removal of extrinsic stains a clinical trial
International Journal of Dental Hygiene, 2015Co-Authors: P A Patil, Anil V Ankola, M I Hebbal, A C PatilAbstract:Objective To compare the effectiveness of Abrasive component (perlite/calcium carbonate) and enzymatic component (papain and bromelain) of whitening toothpaste in removal of extrinsic stains. Methods This study is a randomized, triple blind and parallel group study in which 90 subjects aged 18–40 years were included. At baseline, stains scores were assessed by Macpherson's modification of Lobene Stain Index and subjects were randomly assigned to two groups with 45 subjects in each. Group 1 used whitening toothpaste with enzymatic Action and group 2 with Abrasive Action. After 1 month, stain scores were assessed for the effectiveness of the two toothpastes and 2 months later to check the stain prevention efficacy. Wilcoxson's test was used to compare between baseline 1 and 2 months stain scores, and Mann–Witney U-test was applied for intragroup comparison. Results The mean baseline total stain score for the subjects allocated to the enzymatic toothpaste was 37.24 ± 2.11 which reduced to 30.77 ± 2.48 in 1 month, and for the Abrasive paste, total stain reduced from 35.08 ± 2.96 to 32.89 ± 1.95. The reductions in total stain scores with both the pastes were significant compared with baseline stain scores (at 1 month Group 1, P = 0.0233 and Group 2, P = 0.0324; at 2 months, Group 1 P = 0.0356). Both the toothpastes proved to be equally good in removal of extrinsic stains; however, the enzymatic paste showed better results as compared to Abrasive toothpaste. Conclusion Whitening toothpaste with Abrasive Action and enzymatic Action are equally effective in removal of extrinsic stains; however, whitening toothpaste with Abrasive Action needs to be used with caution.
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Comparison of effectiveness of Abrasive and enzymatic Action of whitening toothpastes in removal of extrinsic stains – a clinical trial
International Journal of Dental Hygiene, 2014Co-Authors: P A Patil, Anil V Ankola, M I Hebbal, A C PatilAbstract:Objective To compare the effectiveness of Abrasive component (perlite/calcium carbonate) and enzymatic component (papain and bromelain) of whitening toothpaste in removal of extrinsic stains. Methods This study is a randomized, triple blind and parallel group study in which 90 subjects aged 18–40 years were included. At baseline, stains scores were assessed by Macpherson's modification of Lobene Stain Index and subjects were randomly assigned to two groups with 45 subjects in each. Group 1 used whitening toothpaste with enzymatic Action and group 2 with Abrasive Action. After 1 month, stain scores were assessed for the effectiveness of the two toothpastes and 2 months later to check the stain prevention efficacy. Wilcoxson's test was used to compare between baseline 1 and 2 months stain scores, and Mann–Witney U-test was applied for intragroup comparison. Results The mean baseline total stain score for the subjects allocated to the enzymatic toothpaste was 37.24 ± 2.11 which reduced to 30.77 ± 2.48 in 1 month, and for the Abrasive paste, total stain reduced from 35.08 ± 2.96 to 32.89 ± 1.95. The reductions in total stain scores with both the pastes were significant compared with baseline stain scores (at 1 month Group 1, P = 0.0233 and Group 2, P = 0.0324; at 2 months, Group 1 P = 0.0356). Both the toothpastes proved to be equally good in removal of extrinsic stains; however, the enzymatic paste showed better results as compared to Abrasive toothpaste. Conclusion Whitening toothpaste with Abrasive Action and enzymatic Action are equally effective in removal of extrinsic stains; however, whitening toothpaste with Abrasive Action needs to be used with caution.
Marc Arthur Masen - One of the best experts on this subject based on the ideXlab platform.
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A Finite Element Approach to Modeling Abrasive Wear Modes
Tribology Transactions, 2016Co-Authors: M. Woldman, Tiedo Tinga, Emile Van Der Heide, Marc Arthur MasenAbstract:ABSTRACTMachine components operating in sandy environments will wear because of the Abrasive interAction with sand particles. In this work, a method is derived to predict the amount of wear caused by such Abrasive Action, in order to improve the maintenance concept of the components. A finite element model is used to simulate various tips scratching a smooth surface. The model is verified by comparing the obtained results with a set of experiments performed earlier (M. Woldman, et al., 2013, Wear, 301(1–2), pp 76–81).
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Abrasive wear based predictive maintenance for systems operating in sandy conditions
Wear, 2015Co-Authors: M. Woldman, Evert Van Der Heide, Tiedo Tinga, Marc Arthur MasenAbstract:Machines operating in sandy environments are damaged by the Abrasive Action of sand particles that enter the machine and become entrapped between components and contacting surfaces. In the case of the military services the combination of a sandy environment and the wide range of tasks to be fulfilled results in extreme and uncertain operating conditions. All of this hinders the ability to establish efficient maintenance strategies prior to deployment and increases the risk of mechanical failure. To prevent such problems, it would be desirable to perform maintenance based on the prevailing condition of both the components and the environment. By monitoring the loading situation as well as the characteristics of the sand particles, the wear of components is quantified, allowing maintenance to be performed when necessary. The development and implementation of such a predictive maintenance concept requires knowledge of the operational and environmental conditions and how they relate to the principal wear mechanisms. Based on previously established relationships between the Abrasive particles and the resulting Abrasive wear, the current work focuses on the implementation of these results into a predictive maintenance concept for vehicles that operate in a sandy environment. For this, the local parameters that govern the wear mechanism, such as the normal forces and sliding distances need to be linked to machine usage parameters including the type of terrain and the driving distance. The proposed concept is demonstrated using a case study on the sprockets of a military vehicle, where the sprockets wear progressively during use of the vehicle due to the Abrasive Action of sand. The predictive maintenance concept is shown to support the determination of maintenance intervals under a range of usage profiles and sand varieties.
