Which combining form pertains to teeth?

• A. Onych/o
• B. Dent/i
• C. Pyr/o
• D. Noct/i

Answer: (B)

The combining form for tooth is dent/i. It comes from the Latin dens, dentis, and is used to build terms related to teeth, such as dentist, dental, and dentition. This form clearly signals a tooth-related meaning in medical terms, which is why it’s the correct choice.

Onych/o refers to nails, pyr/o relates to fever or fire, and noct/i means night. None of those connect to teeth, so they don’t fit the concept tested here.