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NEBDN Dental NurseQuestion 5 / 10

When charting the upper right first molar using the FDI two-digit system, which number should the dental nurse record?

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✓ Correct answer: A. 16 Under the FDI system, quadrant 1 denotes the upper right, and the first molar occupies position 6, making this tooth number 16. Why the other options are incorrect: • 26: 26 identifies the first molar in the upper left quadrant (quadrant 2). • 36: 36 identifies the first molar in the lower left quadrant (quadrant 3). • 46: 46 identifies the first molar in the lower right quadrant (quadrant 4). • 15: 15 designates the second premolar in the upper right quadrant.

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