Is there a dentist in the house

God seems to have made a few mistakes evolving the humanoid, one being the inclusion of nerve within the tooth, seemingly without evolutionary purpose. You could argue that the pain of decay contributed to Early Man's longevity by forcing an extraction. But in his earlier history it's doubtful Man lived long enough for this expedient to do much good; and anyhow we might suppose his smile with missing teeth might repel the potential mate

Decay aside, nerve endings are also exposed in a tooth cracked or worn to a stub. I assume the immediate dental counter entails root canal, pretty drastic. However in some cases where its victim tolerates it, the pain eventually abates, owing presumably to the death or retreat of the nerve endings. My q is: how to foster this fortunate outcome or quicken it

For instance, is it just a matter of time or is it promoted by (1) incessant contact with the opposing tooth or (2) by the application of chemical agents like (a) clove oil or (b) Sensodyne or even © Benzocain

…and in the latter cases if the tooth nerve endings are killed, woujldn't such chems also attack the lips, tongue, etc

Thanks anyone qualified