They do indeed numb the whole mouth, nostr:nprofile1qqsp3yzapfwkyw4cr2vt4xx9s27474lj2pkxhqyfqh79n826pv3fkzqpzemhxue69uhkzem8wghxummnw3ezumrpdejz7qg3waehxw309ahx7um5wghxcctwvshsz9thwden5te0wfjkccte9ejxzmt4wvhxjme0fmrup6 but once the novocaine has wore off, it can become rather painful. I replied to an earlier thread. In my hotel, there was another guy from The UK, getting his done. He was a drug dealer, he had additional numbing agents available, on tap. He was very forthcoming with his wares🙏🏻😂.