Use "back tooth" in a sentence

1. But the word of Mr Costello was an unwelcome language for him for he nauseated the wretch that seemed to him a cropeared creature of a misshapen gibbosity, born out of wedlock and thrust like a crookback toothed and feet first into the world, which the dint of the surgeon's pliers in his skull lent indeed a colour to, so as to put him in thought of that missing link of creation's chain desiderated by the late ingenious Mr Darwin