I can't see holding this in your mouth while shooting. It's just wrong!
Amazingly, a patent was filed in 1963 and granted in 1966. After the expense and work coming up with this, I wonder how many got sold?
From Archery magazine, April, 1965.

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I think this is another item that P.T. Barnum would have liked.
Looks to me that you have to pull the bowstring back into the slot before releasing.
Takes target panic to a whole new level...lol
Deno
Excellent for loose tooth extraction.
Actually, upon closer inspection it appears to stay in the mouth. A kind of fancy kisser that doesn't attach to the string.
You're correct Jim. #'s 15 & 16 are teeth!!
If your bare shaft and teeth group the same, should be good.