NEET MDS Quiz - Practice Test

1

Dental Materials

After an amalgam restoration has been carved, it is important to lightly burnish the surface because burnishing
1. moves the amalgam in such a way as to fill in voids and submarginal areas
2. changes the contour of the restoration
3. increases the amalgam�s resistance to corrosion
4. contributes a dull luster to the surface

Option 1

Option 2

Option 3

Option 4

📝 Explanation:

After an amalgam restoration has been carved, it is important to lightly burnish the surface because burnishing increases the amalgam�s resistance to corrosion

2

Dental Materials

What is the primary wavelength emitted by an argon laser used in dentistry?
1) 400-500 nm.
2) 500-600 nm.
3) 800-900 nm.
4) 1000-1100 nm.

Option 1

Option 2

Option 3

Option 4

📝 Explanation:

Argon lasers emit light in the green-blue spectrum, with wavelengths between 488 and 514.5 nm, which are absorbed well by pigmented tissues like hemoglobin and melanin, making them useful for soft tissue procedures.

3

Dental Materials

What is the typical intensity range of a dental argon laser?
1) 1-10 mW.
2) 100-500 mW.
3) 500-1000 mW.
4) More than 1000 mW.

Option 1

Option 2

Option 3

Option 4

📝 Explanation:

Dental argon lasers typically operate within the range of 100 to 500 mW, providing sufficient power for soft tissue procedures and some hard tissue interactions.

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