Final answer:
Dentinal pain is carried by A and C fibers which get activated by nociceptors in response to dental trauma. Chemical messengers released by damaged cells also play a role in transmitting the pain signals to the brain.
Step-by-step explanation:
Pain in dentin, the layer beneath the enamel of our teeth, is carried by specialized nerve fibers called A and C fibers. When dental trauma occurs, such as cavities, fractures, or sensitivity, nociceptors in these fibers get activated and transmit signals to the central nervous system to register pain.
Chemical messengers like cytokines, serotonin, and prostaglandins are released by damaged cells, contributing to the sensation of pain. Nociceptors in A and C fibers have receptors that detect these chemical signals and transmit them to the brain as pain.
In conclusion, dentinal pain is carried by A and C fibers, which get activated by nociceptors in response to dental trauma, while chemical messengers released by damaged cells also play a role in transmitting the pain signals to the brain.