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NBDHE Dental Hygiene Board Exam Practice Test PDF (Free Printable 2026)
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NBDHE Patient Education and Preventive Dentistry
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Which fluoride concentration is found in most prescription-strength fluoride toothpastes recommended for high-caries-risk patients?
A
1,000 ppm
B
1,100 ppm
C
5,000 ppm
D
2,500 ppm
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