dental skool

I think I rant about the dentist every time I go because I just hate it so. Yes, I know I need to floss more. Yes, I know my gums are receding into oblivion, which I'm starting to believe is out of my control. I swear, I brush softer and softer every time...

Anyway, so I'm laying in the chair about to get a filling. For some reason the topic between the dentist and hygienist turns to sunscreen. Here is the conversation (with my brain commentary):

Dentist: Well there's the SPF part. Do you know what that is?

Hygienist: Uhhh...

Me: [Come on, you got this...]

D: I'm sure you know.

H: Uh..doesn't it help with sun burn or something?

Me: [Sun Protection Factor, dude]

D: Yeah, well there's different numbers like 40, 50, 70.

Me: [70? Don't think that's normal...]

D: Do you know what they mean?

H: Not really

Me: [Not really??]

D: It's the time needed to reapply. Like 40, would mean every 40 minutes.

Me: [Uh, that's not remotely true. Try multiplying by 10]

H: Oh, that makes sense.

Me: [No, no it doesn't. I don't know if I want you putting that drill in my mouth now.]

Maybe it's just me, but I worry when people lack in common sense that they are lacking in other areas too... Oh well, I'm still alive.