Dental Which of the following is not true regarding the second number of the instrument formula? A Indicates the primary cutting edge angle B The angle is expressed as a percent of 360 degrees C This number is always 50 or less D It can be omitted to give 3 number code 💡 Explanation Which of the following is not true regarding the second number of the instrument formula? ✓ Correct Answer: C. This number is always 50 or less