Which of the Following Statements Is True of Bleaching Agents

question 13

Multiple Choice

Which of the following statements is true of bleaching agents?

• A) They will adversely affect restorative materials such as gold alloys, amalgam, microfilled composites, or porcelain.
• B) Bleach should come in contact with dentin in order to bleach the yellow shade.
• C) Some microhybrid composites, hybrid ionomers, and glass ionomers have been roughened slightly by bleaching gels.
• D) Yellow, orange, or light brown stains are the least responsive to bleaching.

Calculate test statistics and critical values for the Wilcoxon Signed-Rank test.

Conduct hypothesis testing using the Wilcoxon Signed-Rank test and conclude based on the test results.

Recognize the conditions under which the Wilcoxon Signed-Rank test is appropriate to use.

Understand the treatment of tied values in the Wilcoxon Signed-Rank test.

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Definitions:

Methane Gas

A colorless, odorless flammable gas that is a major component of natural gas, used as a fuel and in the production of various chemicals.

Carbon Dioxide

A gas characterized by its lack of color and smell, produced when carbon and organic compounds burn, and during the respiration process, which plants absorb in photosynthesis.

Definite Proportions

A principle stating that a chemical compound always contains its component elements in fixed ratio by mass and does not depend on its source and preparation method.

Relative Masses

A concept referring to how the mass of one particle or object compares to another, often used in chemistry to discuss the atomic mass of elements relative to the carbon-12 standard.