"For moneyed Americans", writes Sarah Dunant "perfect dentistry is a matter of course". For Europeans- and she counts herself within that number - the situation is rather different!

Sarah takes a sideways look at teeth through the ages...and dentistry in times of austerity.

And for those whose chief loathing is a mouthful of shining American teeth, she offers hope. "Yaeba", the latest craze to hit Japan where young fashonista girls are getting their teeth cosmetically altered to appear more crooked!

Producer Adele Armstrong.