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At which level, parts per million (ppm), of excess systemic fluoride will teeth develop brown staining and pitting of the enamel surface?

These stains are caused by medications or developmental disturbances in the developing tooth bud.

Which stains are most effectively removed by whitening of vital teeth?

Whitening materials often contain _____ to help cut down on tooth sensitivity.

What agency requires an eyewash station to be installed in every place of employment where chemicals are used?

Until 1970, which of the following groups of dental auxiliaries were allowed to perform intraoral functions in all states?

Which of the following is considered a good conductor of temperature?

Which of the 700 microorganisms in the oral cavity are most prevalent?

A hazardous chemical is any substance that ____?

Normal masticatory forces on the occlusal surfaces of molar teeth can increase to as much as _____pounds per square inch on a cusp tip.