Which root word is associated with "teeth"?

The root word associated with "teeth" is "Dent/I." This root comes from the Latin word "dens," meaning tooth. In medical terminology, this root is often used in words related to dental health, such as "dentist," which refers to a professional who specializes in the care and treatment of teeth, and "dentistry," which encompasses the diagnosis and treatment of conditions affecting the teeth and gums.

The other root words provided do not relate to teeth. For instance, "Derm/o" pertains to the skin, "Cardi/o" relates to the heart, and "Cyt/o" refers to cells. Each of these root words serves a distinct purpose in medical terminology, relating to specific parts of the body or aspects of health. In contrast, "Dent/I" specifically focuses on dental anatomy and related health issues, making it the appropriate choice for this question.