Which variety of grit should be used to sharpen a dental instrument to be used for tooth preparation?
Correct Answer: Fine
Description: Stationary oilstones are available in coarse, medium or fine grit.
Only a fine grit stone is suitable for the final sharpening of dental instruments to be used for tooth preparation.
Coarse and medium grits may be used for initial reshaping of a badly damaged instrument or for sharpening other dental equipment such as bench knives.
Coarser stones cut more rapidly, but produce a rougher surface.
If the use of two or more grits is required, the coarser is used as little as needed for reshaping and then the final sharpening is done with a fine stone.
Ref: Sturdevant's art and science of operative dentistry. 4th edition page 317
Category:
Dental
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