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A dental assistant's stool has two items not found on the operator's stool. These items are:

1) Dental mirror and explorer
2) Dental drill and suction
3) Dental forceps and scaler
4) Dental syringe and amalgam carrier

1 Answer

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Final answer:

The question incorrectly identifies a dental syringe and amalgam carrier as items on a dental assistant's stool. These items are used by dentists. A dental assistant's stool is designed for mobility and ergonomic support, whereas the dental amalgam filling discussion relates to their mercury content and toxicity concerns.

Step-by-step explanation:

The subject of the question pertains to the equipment used in a dental clinic, specifically the differences between the tools found on a dental assistant's stool compared to those on the operator's, or dentist's, stool. While the question mentions a dental syringe and amalgam carrier, these items are actually commonly used by the dentist rather than the dental assistant. Instead, the distinguishing features of a dental assistant's stool are its mobility and design to support good posture, which facilitates the assistant's tasks such as handling instruments, suctioning, and managing materials during procedures.

Dental amalgams, which are fillings made from a mixture of metals including silver, and approximately 50% mercury by weight, are placed in cavities due to their longevity, ease of manipulation, and low cost. However, due to concerns regarding the toxicity of mercury, their use has been the subject of much debate and has led to increasing use of alternative filling materials.

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