otherwise, save in exceptional cases, it will not come at all. the best i can do is teach baby bird that her body is her own, and that she has a right to refuse anyone access to it. however, a healthy smile can get harder and harder to achieve as you get older, because despite how well you take care of them, they don’t always last as long as they should. not just money wise, but time and consistency wise. a typical screw is shown in fig. 