Posted on April 17 2017
Class II restoration on tooth #3 using the Greater Curve Standard Band.
Dr. Wascom, below is a link to Activa’s website which explains bioactive better than I can!
You said activa flowable is bioactive, what does that mean
(Why does it not bond to the adjacent tooth?)
It does bond to the adjacent tooth. The bond is to a smooth small surface. It breaks cleanly away with a torque of a spatula. The tooth is restored in a neutral position. The contact is a direct build against the adjacent tooth. No unpredictable aggressive wedging is needed.
Why does it not bond to the adjacent tooth?
Still I have a problem with being sure the floor of the deep box preps is not sealed w/o glass ionomer.)
Activa is bioactive just like a glass ionomer.
1- Diagnodent 12 or less reading within 1.5 mm of the prep border
12 to 24 reading on intermediate dentin
24 to 36 on deep dentin
2- Activa is not a typical composite. The filler and the resin are one in the same. Flowability has nothing to do with how highly filled it is.
3- I do use Clean and Boost. It is very acidic and it cleans up any residual oils. I admit etching enamel can only help and not hinder a bond.
4- Activa is a dual cure. Follow up with additional light curing is not necessary. However, I could be wrong and additional light curing may provide a further cure.
I always learn something from your clinical tips. You are good. It is generous of you to share. Comments on this tip:
1-It is interesting that Diagnodent can be used that way but I wish you said what readings indicate remaining dentin decay versus no decay.
2-Sorry, but flowable is flowable…not nearly as filled as paste. I am surprised you believe the marketing hype about its being suitable for occlusal forces over time. I believe they would say it, but I don’t believe they are serious.
3- Surprised to see you not acid etch the enamel (because self etch resin doesn’t etch enamel as well as phosphoric acid and gives inferior bond by comparison), and
4- Lastly, surprised that you did not hit the filled restoration with the curing light from buccal and lingual after the band was removed.
Still I have a problem with being sure the floor of the deep box preps is not sealed w/o glass ionomer
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