Zap! Can giving yourself a series of small shocks actually help reduce pain? That's the science behind transcutaneous electrical nerve stimulation, also known as TENS therapy. This therapy uses a low-voltage electrical current to help reduce pain in targeted areas throughout your body. Though commonly used to treat issues like arthritis or strained muscles, the dental community has adopted this technology for oral pain management, too. Find out how TENS therapy works to minimize pain for everything from dental restorations to TMJ disorders.