Tuesday, January 9, 2024

Most desirable finished surface composite resin can be provided by carbide finishing bur

Most desirable finished surface composite resin can be provided by:

  • A- white stone.
  • B- hand instrument.
  • C- carbide finishing bur.
  • D- diamond finishing bur.
  • E- celluloid matrix band.

The most desirable finished surface for a composite resin filling is achieved with: D. Diamond finishing bur.

Here's why the other options are less suitable:

A. White stone:

While effective for preliminary shaping, white stones can leave scratches or a chalky finish on the composite resin, compromising the aesthetics and smoothness.

B. Hand instrument:

Hand instruments are not precise enough to achieve the desired smooth and polished finish on composite resin. They can also leave uneven areas or scratches.

C. Carbide finishing bur:

Carbide burs can be too aggressive for finishing composite resin and may cause rough or uneven surfaces. They are more suited for initial shaping of hard materials like tooth enamel.

E. Celluloid matrix band:

This option is not a finishing tool but a temporary barrier used during placement of the composite resin. It doesn't play a role in achieving a smooth final surface.

Therefore, diamond finishing burs are the preferred choice for achieving a high-quality, smooth, and aesthetically pleasing finish on composite resin restorations. They are available in various grits and shapes to provide optimal control and precision during finishing.

Remember, the specific technique and tools used for finishing composite resin may vary depending on the individual restoration and the dentist's preference. However, diamond finishing burs are generally considered the most effective tool for achieving the desired surface quality.