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Paloma Sevilla - One of the best experts on this subject based on the ideXlab platform.
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Dental casting alloys behaviour during power Toothbrushing with toothpastes with various abrasivities. Part I: wear behavior
Journal of Materials Science: Materials in Medicine, 2008Co-Authors: Ll. Nogués, J. Martinez-gomis, C. Molina, J. Salsench, Maria Peraire, Paloma SevillaAbstract:The purpose of this study was to evaluate the long term effect of abrasivity of toothpastes normally used over the surface and mechanical properties of dental casting alloys. Three dental casting alloys (Ni–Cr, Co–Cr, c.p. Ti) and one ceramic were chosen. Four specimens of each material were immersed in artificial saliva, brushed without or with one of four toothpastes of different Relative Dentine Abrasivity (RDA 50, 52, 80, and 114). An Electric Toothbrush with a load of 250 g was used for 420 min. Mass loss was determined by difference in weight, microhardness and surface roughness were also measured. Two-way ANOVA and non-parametric tests were used to detect significant differences. Titanium specimens (478 μg/cm^2) exhibited the most mass loss, whereas ceramic (282 μg/cm^2) and Co–Cr (262 μg/cm^2) exhibited the least. However, ceramic demonstrated the most volume loss (0.239 mm^3). The abrasivity effect of the toothpaste correlated with the RDA values. Slight variations in microhardness were observed after Toothbrushing and depended on the material but not on the toothpaste used. Material surfaces were slightly smoothed by Toothbrushing but no significant differences were detected. Dental casting alloys and ceramic are susceptible to abrasion by brushing with an Electric Toothbrush depending on the RDA value of the toothpaste. Variations in microhardness and surface roughness were not clinically relevant.
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Dental casting alloys behaviour during power Toothbrushing with toothpastes of various abrasivities. Part II: corrosion and ion release
Journal of Materials Science: Materials in Medicine, 2008Co-Authors: C. Molina, Ll. Nogués, J. Martinez-gomis, J. Salsench, Maria Peraire, Paloma SevillaAbstract:The purpose of this study was to evaluate the long term effect of abrasivity of toothpastes normally used over the corrosion behavior and ion release of the different dental casting alloys. Three dental casting alloys (Ni–Cr, Co–Cr and commercially pure Ti) were studied. Four specimens of each material were immersed, brushed without paste or brushed with one of four toothpastes of different Relative Dentine Abrasivity (RDA 50, 52, 80, and 114). An Electric Toothbrush with a load of 250 g was used for 420 min. Corrosion behavior was determined by means a potenciostat with high sensitivity and the ion release determined by Inductively Coupled Plasma-Mass Spectrometry. Two-way ANOVA and non-parametric tests were used to detect significant differences. Titanium specimens exhibited the best corrosion behavior after and before the Toothbrushed, being the worst of the three alloys the Cr–Ni. Titanium oxide produced spontaneously on the Ti surface is the main cause of the high corrosion resistance of the material. However, the eutectoid of the CrNi with chemical composition between different phases produces pitting on the phases boundaries with an important decrease of the corrosion resistance. Besides, the CrNi produces high values of the Ni and Cr release. Slight increment in roughness were observed after Toothbrushing and depended on the material but not on the toothpaste used. The increase of the microhardness (residual stresses) provokes a decrease of the corrosion resistance and an increase of the ion release.
Ll. Nogués - One of the best experts on this subject based on the ideXlab platform.
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Dental casting alloys behaviour during power Toothbrushing with toothpastes with various abrasivities. Part I: wear behavior
Journal of Materials Science: Materials in Medicine, 2008Co-Authors: Ll. Nogués, J. Martinez-gomis, C. Molina, J. Salsench, Maria Peraire, Paloma SevillaAbstract:The purpose of this study was to evaluate the long term effect of abrasivity of toothpastes normally used over the surface and mechanical properties of dental casting alloys. Three dental casting alloys (Ni–Cr, Co–Cr, c.p. Ti) and one ceramic were chosen. Four specimens of each material were immersed in artificial saliva, brushed without or with one of four toothpastes of different Relative Dentine Abrasivity (RDA 50, 52, 80, and 114). An Electric Toothbrush with a load of 250 g was used for 420 min. Mass loss was determined by difference in weight, microhardness and surface roughness were also measured. Two-way ANOVA and non-parametric tests were used to detect significant differences. Titanium specimens (478 μg/cm^2) exhibited the most mass loss, whereas ceramic (282 μg/cm^2) and Co–Cr (262 μg/cm^2) exhibited the least. However, ceramic demonstrated the most volume loss (0.239 mm^3). The abrasivity effect of the toothpaste correlated with the RDA values. Slight variations in microhardness were observed after Toothbrushing and depended on the material but not on the toothpaste used. Material surfaces were slightly smoothed by Toothbrushing but no significant differences were detected. Dental casting alloys and ceramic are susceptible to abrasion by brushing with an Electric Toothbrush depending on the RDA value of the toothpaste. Variations in microhardness and surface roughness were not clinically relevant.
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Dental casting alloys behaviour during power Toothbrushing with toothpastes of various abrasivities. Part II: corrosion and ion release
Journal of Materials Science: Materials in Medicine, 2008Co-Authors: C. Molina, Ll. Nogués, J. Martinez-gomis, J. Salsench, Maria Peraire, Paloma SevillaAbstract:The purpose of this study was to evaluate the long term effect of abrasivity of toothpastes normally used over the corrosion behavior and ion release of the different dental casting alloys. Three dental casting alloys (Ni–Cr, Co–Cr and commercially pure Ti) were studied. Four specimens of each material were immersed, brushed without paste or brushed with one of four toothpastes of different Relative Dentine Abrasivity (RDA 50, 52, 80, and 114). An Electric Toothbrush with a load of 250 g was used for 420 min. Corrosion behavior was determined by means a potenciostat with high sensitivity and the ion release determined by Inductively Coupled Plasma-Mass Spectrometry. Two-way ANOVA and non-parametric tests were used to detect significant differences. Titanium specimens exhibited the best corrosion behavior after and before the Toothbrushed, being the worst of the three alloys the Cr–Ni. Titanium oxide produced spontaneously on the Ti surface is the main cause of the high corrosion resistance of the material. However, the eutectoid of the CrNi with chemical composition between different phases produces pitting on the phases boundaries with an important decrease of the corrosion resistance. Besides, the CrNi produces high values of the Ni and Cr release. Slight increment in roughness were observed after Toothbrushing and depended on the material but not on the toothpaste used. The increase of the microhardness (residual stresses) provokes a decrease of the corrosion resistance and an increase of the ion release.
C. Molina - One of the best experts on this subject based on the ideXlab platform.
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Dental casting alloys behaviour during power Toothbrushing with toothpastes with various abrasivities. Part I: wear behavior
Journal of Materials Science: Materials in Medicine, 2008Co-Authors: Ll. Nogués, J. Martinez-gomis, C. Molina, J. Salsench, Maria Peraire, Paloma SevillaAbstract:The purpose of this study was to evaluate the long term effect of abrasivity of toothpastes normally used over the surface and mechanical properties of dental casting alloys. Three dental casting alloys (Ni–Cr, Co–Cr, c.p. Ti) and one ceramic were chosen. Four specimens of each material were immersed in artificial saliva, brushed without or with one of four toothpastes of different Relative Dentine Abrasivity (RDA 50, 52, 80, and 114). An Electric Toothbrush with a load of 250 g was used for 420 min. Mass loss was determined by difference in weight, microhardness and surface roughness were also measured. Two-way ANOVA and non-parametric tests were used to detect significant differences. Titanium specimens (478 μg/cm^2) exhibited the most mass loss, whereas ceramic (282 μg/cm^2) and Co–Cr (262 μg/cm^2) exhibited the least. However, ceramic demonstrated the most volume loss (0.239 mm^3). The abrasivity effect of the toothpaste correlated with the RDA values. Slight variations in microhardness were observed after Toothbrushing and depended on the material but not on the toothpaste used. Material surfaces were slightly smoothed by Toothbrushing but no significant differences were detected. Dental casting alloys and ceramic are susceptible to abrasion by brushing with an Electric Toothbrush depending on the RDA value of the toothpaste. Variations in microhardness and surface roughness were not clinically relevant.
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Dental casting alloys behaviour during power Toothbrushing with toothpastes of various abrasivities. Part II: corrosion and ion release
Journal of Materials Science: Materials in Medicine, 2008Co-Authors: C. Molina, Ll. Nogués, J. Martinez-gomis, J. Salsench, Maria Peraire, Paloma SevillaAbstract:The purpose of this study was to evaluate the long term effect of abrasivity of toothpastes normally used over the corrosion behavior and ion release of the different dental casting alloys. Three dental casting alloys (Ni–Cr, Co–Cr and commercially pure Ti) were studied. Four specimens of each material were immersed, brushed without paste or brushed with one of four toothpastes of different Relative Dentine Abrasivity (RDA 50, 52, 80, and 114). An Electric Toothbrush with a load of 250 g was used for 420 min. Corrosion behavior was determined by means a potenciostat with high sensitivity and the ion release determined by Inductively Coupled Plasma-Mass Spectrometry. Two-way ANOVA and non-parametric tests were used to detect significant differences. Titanium specimens exhibited the best corrosion behavior after and before the Toothbrushed, being the worst of the three alloys the Cr–Ni. Titanium oxide produced spontaneously on the Ti surface is the main cause of the high corrosion resistance of the material. However, the eutectoid of the CrNi with chemical composition between different phases produces pitting on the phases boundaries with an important decrease of the corrosion resistance. Besides, the CrNi produces high values of the Ni and Cr release. Slight increment in roughness were observed after Toothbrushing and depended on the material but not on the toothpaste used. The increase of the microhardness (residual stresses) provokes a decrease of the corrosion resistance and an increase of the ion release.
J. Salsench - One of the best experts on this subject based on the ideXlab platform.
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Dental casting alloys behaviour during power Toothbrushing with toothpastes with various abrasivities. Part I: wear behavior
Journal of Materials Science: Materials in Medicine, 2008Co-Authors: Ll. Nogués, J. Martinez-gomis, C. Molina, J. Salsench, Maria Peraire, Paloma SevillaAbstract:The purpose of this study was to evaluate the long term effect of abrasivity of toothpastes normally used over the surface and mechanical properties of dental casting alloys. Three dental casting alloys (Ni–Cr, Co–Cr, c.p. Ti) and one ceramic were chosen. Four specimens of each material were immersed in artificial saliva, brushed without or with one of four toothpastes of different Relative Dentine Abrasivity (RDA 50, 52, 80, and 114). An Electric Toothbrush with a load of 250 g was used for 420 min. Mass loss was determined by difference in weight, microhardness and surface roughness were also measured. Two-way ANOVA and non-parametric tests were used to detect significant differences. Titanium specimens (478 μg/cm^2) exhibited the most mass loss, whereas ceramic (282 μg/cm^2) and Co–Cr (262 μg/cm^2) exhibited the least. However, ceramic demonstrated the most volume loss (0.239 mm^3). The abrasivity effect of the toothpaste correlated with the RDA values. Slight variations in microhardness were observed after Toothbrushing and depended on the material but not on the toothpaste used. Material surfaces were slightly smoothed by Toothbrushing but no significant differences were detected. Dental casting alloys and ceramic are susceptible to abrasion by brushing with an Electric Toothbrush depending on the RDA value of the toothpaste. Variations in microhardness and surface roughness were not clinically relevant.
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Dental casting alloys behaviour during power Toothbrushing with toothpastes of various abrasivities. Part II: corrosion and ion release
Journal of Materials Science: Materials in Medicine, 2008Co-Authors: C. Molina, Ll. Nogués, J. Martinez-gomis, J. Salsench, Maria Peraire, Paloma SevillaAbstract:The purpose of this study was to evaluate the long term effect of abrasivity of toothpastes normally used over the corrosion behavior and ion release of the different dental casting alloys. Three dental casting alloys (Ni–Cr, Co–Cr and commercially pure Ti) were studied. Four specimens of each material were immersed, brushed without paste or brushed with one of four toothpastes of different Relative Dentine Abrasivity (RDA 50, 52, 80, and 114). An Electric Toothbrush with a load of 250 g was used for 420 min. Corrosion behavior was determined by means a potenciostat with high sensitivity and the ion release determined by Inductively Coupled Plasma-Mass Spectrometry. Two-way ANOVA and non-parametric tests were used to detect significant differences. Titanium specimens exhibited the best corrosion behavior after and before the Toothbrushed, being the worst of the three alloys the Cr–Ni. Titanium oxide produced spontaneously on the Ti surface is the main cause of the high corrosion resistance of the material. However, the eutectoid of the CrNi with chemical composition between different phases produces pitting on the phases boundaries with an important decrease of the corrosion resistance. Besides, the CrNi produces high values of the Ni and Cr release. Slight increment in roughness were observed after Toothbrushing and depended on the material but not on the toothpaste used. The increase of the microhardness (residual stresses) provokes a decrease of the corrosion resistance and an increase of the ion release.
Maria Peraire - One of the best experts on this subject based on the ideXlab platform.
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Dental casting alloys behaviour during power Toothbrushing with toothpastes with various abrasivities. Part I: wear behavior
Journal of Materials Science: Materials in Medicine, 2008Co-Authors: Ll. Nogués, J. Martinez-gomis, C. Molina, J. Salsench, Maria Peraire, Paloma SevillaAbstract:The purpose of this study was to evaluate the long term effect of abrasivity of toothpastes normally used over the surface and mechanical properties of dental casting alloys. Three dental casting alloys (Ni–Cr, Co–Cr, c.p. Ti) and one ceramic were chosen. Four specimens of each material were immersed in artificial saliva, brushed without or with one of four toothpastes of different Relative Dentine Abrasivity (RDA 50, 52, 80, and 114). An Electric Toothbrush with a load of 250 g was used for 420 min. Mass loss was determined by difference in weight, microhardness and surface roughness were also measured. Two-way ANOVA and non-parametric tests were used to detect significant differences. Titanium specimens (478 μg/cm^2) exhibited the most mass loss, whereas ceramic (282 μg/cm^2) and Co–Cr (262 μg/cm^2) exhibited the least. However, ceramic demonstrated the most volume loss (0.239 mm^3). The abrasivity effect of the toothpaste correlated with the RDA values. Slight variations in microhardness were observed after Toothbrushing and depended on the material but not on the toothpaste used. Material surfaces were slightly smoothed by Toothbrushing but no significant differences were detected. Dental casting alloys and ceramic are susceptible to abrasion by brushing with an Electric Toothbrush depending on the RDA value of the toothpaste. Variations in microhardness and surface roughness were not clinically relevant.
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Dental casting alloys behaviour during power Toothbrushing with toothpastes of various abrasivities. Part II: corrosion and ion release
Journal of Materials Science: Materials in Medicine, 2008Co-Authors: C. Molina, Ll. Nogués, J. Martinez-gomis, J. Salsench, Maria Peraire, Paloma SevillaAbstract:The purpose of this study was to evaluate the long term effect of abrasivity of toothpastes normally used over the corrosion behavior and ion release of the different dental casting alloys. Three dental casting alloys (Ni–Cr, Co–Cr and commercially pure Ti) were studied. Four specimens of each material were immersed, brushed without paste or brushed with one of four toothpastes of different Relative Dentine Abrasivity (RDA 50, 52, 80, and 114). An Electric Toothbrush with a load of 250 g was used for 420 min. Corrosion behavior was determined by means a potenciostat with high sensitivity and the ion release determined by Inductively Coupled Plasma-Mass Spectrometry. Two-way ANOVA and non-parametric tests were used to detect significant differences. Titanium specimens exhibited the best corrosion behavior after and before the Toothbrushed, being the worst of the three alloys the Cr–Ni. Titanium oxide produced spontaneously on the Ti surface is the main cause of the high corrosion resistance of the material. However, the eutectoid of the CrNi with chemical composition between different phases produces pitting on the phases boundaries with an important decrease of the corrosion resistance. Besides, the CrNi produces high values of the Ni and Cr release. Slight increment in roughness were observed after Toothbrushing and depended on the material but not on the toothpaste used. The increase of the microhardness (residual stresses) provokes a decrease of the corrosion resistance and an increase of the ion release.