Method of evaluating the enamel microcrack resistance efficacy of compositions
AssigneeColgate-Palmolive Company
InventorsQichao Ruan, Stacey Lavender
Life of this patent
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Abstract
Disclosed are methods of determining enamel micro-crack and/or microscratch resistance and also methods of identifying compositions that are effective in increasing enamel micro-crack and/or microscratch resistance or evaluating the efficacy of compositions in increasing enamel micro-crack and/or microscratch resistance.
Claims15
A method of identifying compositions that are effective in increasing enamel micro-crack resistance or evaluating the efficacy of compositions in increasing enamel micro-crack resistance;
- comprising:
- a) providing an enamel sample;
- b) generating baseline micro-cracks on the enamel sample;
- c) measuring and/or calculating one or more baseline micro-crack characteristics or mechanical properties of the enamel;
- d) treating the enamel sample with a composition;
- e) generating post-treatment micro-cracks on the enamel sample;
- f) measuring and/or calculating one or more post-treatment micro-crack characteristics or mechanical properties of the enamel;
- g) determining one or more parameters which are changes of the one or more micro-crack characteristics or mechanical properties of the enamel by calculating the difference between the corresponding values obtained before and after the treatment;
- h) comparing the one or more parameters of the composition with those of a control composition;
- and
- i) selecting or identifying the composition for further development or evaluating the efficacy of the composition in increasing enamel micro-crack resistance based on its ability to increase micro-crack resistance relative to the control composition.
A method of identifying compositions that are effective in increasing enamel microscratch resistance or evaluating the efficacy of compositions in increasing enamel microscratch resistance;
- comprising:
- a) providing an enamel sample;
- b) generating baseline microscratches on the enamel sample;
- c) measuring and/or calculating one or more baseline microscratch characteristics or mechanical properties of the enamel;
- d) treating the enamel sample with a test composition;
- e) generating post-treatment microscratches on the enamel sample;
- f) measuring and/or calculating one or more post-treatment microscratch characteristics or mechanical properties of the enamel;
- g) determining one or more parameters which are changes of the one or more microscratch characteristics or mechanical properties of the enamel by calculating the difference between the corresponding values obtained before and after the treatment;
- h) comparing the one or more parameters of the composition with those of a control composition;
- and
- i) selecting or identifying the composition for further development or evaluating the efficacy of the composition in increasing enamel microscratch resistance based on its ability to increase microscratch resistance relative to the control composition.
Dependencies are inferred from the claim text.