The Montclair office of Straty Righellis and Associates is a well-oiled machine. The tooth doctors never seem to run late. Toothbrushes, already stocked with toothpaste, await patients at the door. A slideshow of “before” and “after” images of patients’ mouths and beaming smiles graces the waiting room, so people who can’t wait for straight teeth can see what they will look like one day. One of the other great perks is that the office doesn’t charge you until the braces are actually put on. Patients have been known to get free visits for months or years for checkups before the wires and rubber bands are installed.