D.C.
Hi-
I take my children to Children's Dental Health Associates in Newtown Square, PA on Rt. 3 ( West Chester Pike). They are great there and the do use laughing gas. I do not go back to the room with my 5 year old. However I do go back with my 3 year old and have witnessed them using the gas. I do not have the # with me as I am at work but if you are intereseted e-mail me at ____@____.com and I will get it for you.
D.