Q: Are braces painful?A: There is tenderness and occasional discomfort in the teeth and gums when braces are tightened, but advanced nickel-titanium alloys have improved the efficiency of the wires, allowing orthodontists to exert lighter but steadier pressure on the teeth. In the stainless- steel days of old, the wires had to be made tighter with each adjustment because the pressure would slacken between adjustments.<a href="http://www.bing.com">read more</a>
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