5 Questions
Which instrument formula is used when the cutting edge of the instrument is at a right angle to the blade?
3 Number instrument formula
What is the first number in the 4 Number instrument formula?
Width of the blade in tenths of a millimeter
Which instrument is an example of the 4 Number instrument formula?
Both Gingival marginal trimmer and Angle former
What does the second number represent in the 3 Number instrument formula?
Length of the blade in millimeter
What does the third number represent in the 4 Number instrument formula?
Angle the cutting edge forms with the axis of the handle in centigrade
Test your knowledge of dental instruments with this quiz on the instrument formula given by G.V. Black. Learn about the numbering system and characteristics of different dental instruments.
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