The pain is unbearable, and that's from a small hole. Imagine how painful it is whilst actively drilling a LARGE hole. All of the pain. Like, your whole body inadvertently clenches due to the unbelievable amount of pain.
Been in this kind of dental pain. You'd pull the tooth long before you'd consider drillin' n fillin' it yourself.
If anyone is in this pain, you should know this...
1: Don't ignore it. It won't go away, and there is usually an infection that can spread to your jaw or other teeth. It needs to be taken care of by a professional ASAP.
2: You can take an NSAID with a Non-NSAID pain reliever, and it is just about the only thing that can relieve this pain. Acetaminophen and Ibuprofen were my only relief while waiting for my dental appointment.
My brother in law was hospitalized twice because he had a bacterial infection in his spinal cord. They put a needle into his aorta to inject antibiotics. They finally found that it all stemmed from an infected tooth.