In the latest* installment of Ridiculous Unicode Characters™, I give you U+23C8 DENTISTRY SYMBOL LIGHT UP AND HORIZONTAL WITH WAVE.

I think that this sums things up nicely:

<cortana> i lack this glyph
<cortana> my life will not be complete until i can write it

* I have gone on about ridiculous Unicode characters in the past. I will tag those entries one day.