I think in the dentist waiting room are required to have a photo of teeth toothpaste, or advertisement, because the patient will learn and understand more about dentistry, no need to have anything else.
I think in the waiting room, the dentist needs to have teeth, toothpaste, or advertising, because the patient will know and understand more about dentistry, do not necessarily have to be something else.
I think in the waiting room to a dentist toothpaste, tooth, or advertising, because the patient will know and understand more, dental, Don"t need to have anything else?