Before your child starts playing a kind of musical instrument, particularly a wind instrument such as a clarinet or saxophone, a New York orthodontist strongly recommends that you check first with your dentist. The dentist said that some kind of instruments with some individuals could cause a variety of dental problems, ranging from faulty alignment of teeth to gum difficulties. Millions of American children play instruments which they have selected or they play instruments which have been assigned to them on haphazard basis, he says in a report published in an issue of the Journal of the American Dental Association.