need help hav a Ques

[drnone]

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i have to make a research about Acid-etching enamel
plzz want some help with that
i know its a tech. that remove 10 mm of the enamel
i want to know its effect and its harm
why ppl use it
and what s the histological changes that it makes
??
couldn't find 🙁
plzz

 

[sokrman14]

Seriously, this is the 2nd time in less than a week on this forum. What is the problem with writing full sentences in a post? Do you speak the way you type/spell?