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Comparison of Air-Abrasion Powders Study

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Comparison of Air-Abrasion Powders Study

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Questions and Answers

What was the purpose of comparing the three different air-abrasion powders in the study?

To assess their influence on the susceptibility of enamel to acid challenge (correct)

To analyze their impact on dental hard tissue microhardness

To investigate their role in enzyme production

To study their effect on enamel surface roughness

Why did the study use air-abrasion operating parameters that minimize selective removal of bulk enamel?

To maximize the roughness of the enamel surface

To enhance the penetration of acid into the enamel

To increase the microhardness of the enamel

To avoid excessive enamel surface loss (correct)

What is alumina powder more suited for?

Polishing purposes

Cutting purposes (correct)

Both polishing and cutting purposes

None of the above

What was the result of air-abrasion on sound enamel surfaces according to the study?

Increased enamel surface loss after pH-cycling (B) Signup and view all the answers

What is one likely reason for the increased susceptibility of dental enamel to acid challenge after air-abrasion?

Greater exposed damaged area due to surface modification (A) Signup and view all the answers

Which powder showed similar levels of enamel loss compared to the positive control group?

BAG (D) Signup and view all the answers

Which air-abrasion powder has a significantly higher microhardness compared to that of enamel?

Alumina (D) Signup and view all the answers

What is one advantage of using BAG powder over sodium bicarbonate?

BAG can remineralize enamel (D) Signup and view all the answers

Why is an in-situ study still required according to the text?

To understand the long-term effect of air-abrasion on sound enamel susceptibility to erosion (D) Signup and view all the answers

What process leads to the formation of hydroxyapatite structures when using BAG powder?

All of the above (D) Signup and view all the answers

What method is considered the 'gold standard' in assessing surface loss?

Profilometry (D) Signup and view all the answers

What procedure is commonly used to reduce variation between biological samples when studying enamel mineral change?

Using nail varnish to protect part of the sound enamel (A) Signup and view all the answers