INBDE (Integrated National Board Dental Examination) Practice Exam

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Ace your INBDE with our comprehensive practice exam. Featuring detailed explanations, interactive flashcards, and a wide array of multiple-choice questions designed to mirror the real test. Get ready to surpass your expectations!

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In an instrument formula, what does the third number represent?

Width of the blade in tenth of millimeters
Angle the cutting edge makes with the handle in degrees
Length of the blade in millimeters
Angle the entire blade makes with the handle in degrees

The correct answer is: Length of the blade in millimeters

The third number in an instrument formula represents the length of the blade in millimeters. This is different from the first number which represents the width of the blade, and the second number which represents the angle of the cutting edge. Option A is incorrect as it describes the first number. Option B may seem like a possible answer, but it actually describes the second number which is the cutting angle. Option D is also incorrect as it refers to the entire blade, whereas the third number only represents the length of the blade.