you’re literally in there for 5-10 mins, they stick their finger in and check how many teeth they have and ask you how/ how often and when in the day you brush their teeth
Ours had them sit on our knee and then they reclined the chair back, like how it would be for you. They turned the light on but didn't shine it in their eyes just around them so they could get used to it. Had a good feel around and made a note of the ones that they had come through. The hand in mouth gets them used to the gloves. Thankfully mine were very willing to show their teeth but he explained that most around their age don't even let them get close so he was pleasantly surprised. I wouldn't worry too much if they aren't able to get a good luck. It's more just exposure to the environment at this age 😊
I went a few months ago and they just used it as an opportunity for him to get used to what will happen in future. They counted how many teeth he had and used their fingers to feel around xx