As a dental hygienist, you are likely going to work in a family-friendly office. If you are a more experienced hygienist, share your experiences where you worked with kids in the office. You can also mention your exposure to working with children in another career space.
"Before becoming a dental hygienist, I worked as a nanny. I have always enjoyed working with kids. As a hygienist, I get to see kids often, and they can be challenging when they are afraid or anxious. I have learned how to comfort them and teach them fun ways to care for their teeth."
Entry Level answer example
"While completing my practicum, I worked in a family-friendly dental clinic. Many kids came through. I found that I was great with helping them to stay calm during their procedure. They love the little stickers and toys they get as a reward after their visit, which is always so cute to see."
Experienced answer example
"I have many years' experience working as a dental hygienist in a family-friendly clinic. I probably see over ten kids per day, on average. Kids like me, I think because I remind them of their grandma...ready with a reward when they behave during their visit! Also, I like to know that I get to help influence a new generation to care for their oral health."