Answer:
The correct term is - extrinsic stain.
Explanation:
Extrinsic stains are normally present on the surface of a tooth and occur due to taking pigmented beverages such as coffee, tea, carbonated drinks, caramel coloring, and foods. Smoking cigarettes is also one of the reasons that can cause an extrinsic stain.
This can be removed by dentists or professionals like hygienists. The stain particles act on the outer surface of the teeth and pigmented them which cause stain yellowish or brownish in individuals.
Thus, the correct answer is - extrinsic stain.
Answer:
The correct answer is : When they need to acquire information regarding the patient's contact with infectious agents.
Explanation:
A material safety data sheet or commonly known as MSDS book is a document that contain and list the hazardous effect, ingredients of a particular substance with physical and chemical characteristics. This list or book also gives idea about the effect of such hazard on human health.
A healthcare provider need to refer this book to know about the chemicals or substances that come in contact of a patient to get information about how it can adversely react, what are the handling precautions, the types of measures that can be used in case of exposure, or emergency.
Thus, the correct answer is : When they need to acquire information regarding the patient's contact with infectious agents.
