Around 5-8 minutes from the time it gets to the luting consistency to when it sets up. The setup timing depends on how thin the mix and how well the slab hinders the exothermic reaction. This is why that as soon as the cement is mixed and ready, it needs to be filled and handed to the doctor for placement. A dental tech should coordinate mix timing with the doctor to be sure the doctor is available at the time the mix becomes ready. The instructor should have mentioned setting times so that students don't learn hard office lessons and have to start a new mix because the doctor got involved in a separate long activity, thus wasting cement materials and wasting time with extra cleanup work.

When we put varnish ..before acid ech.....are varnish need light cure

Do it. I did

Actually, one of them did. One student said, "Luting" as soon as she prompted the students. It's that they all talked at once and she didn't hear that student's answer. For whatever reason, that student didn't repeat, probably thinking they got the answer wrong.

That's why they are students, they still learning

Keep in mind that that's a school facility. For learning purposes, tap water is apparently fine for student cleanup and chilling purposes since the glue is not going into someone's mouth. You also wouldn't hand the glass around for everyone to touch. She mentions using alcohol and gauze for cleanup, which would likely be the more hygienic approach to cleaning that slab, but she also said that it's not as easy. She also mentioned that at a chair setting she would wear a mask, gloves and eye protection when mixing in a doctor's office... which she did not do here. She wasn't very clear on the hygiene point for cleaning the mixing slab when at a doctor's office. Her cleaning advice was, at least that I could tell, intended for easier student cleanup for test mixing. Though, she should have made the point that tap water cleanup is not how a doctor's office setting might work. Students who become employed at a doctor's office would need follow the doctor's required methods for cleanup anyway, not random student cleanup methods learned in a classroom setting.

She said at the begining that if she was doing this on a patient she would be wearing a mask and gloves

Be patient with them, rome wasn't built in one day

i guess I'm quite randomly asking but does anyone know of a good place to stream newly released movies online?

@Guillermo Angelo i watch on FlixZone. You can find it on google =)

@Mack Keith yea, been watching on flixzone for since april myself :D

@Mack Keith Thanks, I went there and it seems to work =) I really appreciate it!

@Guillermo Angelo Glad I could help =)

Depends on how early in the curriculum they are here. If mixing this cement is one of the first things they learn when starting classes, they might not yet have enough experience to know the answers to her questions about the cement.

In 5-9 mins

yep Minnesota

Hennepin Technical College in Brooklyn Park, Minnesota