South Korean scientists have unveiled a breakthrough that sounds straight out of sci-fi: a microneedle patch designed to help regrow teeth. Instead of drills, implants, or fillings, the patch delivers targeted compounds directly into the gums, stimulating tissue regeneration and potentially allowing damaged teeth to repair themselves naturally.\n\nWhile still in the research phase, the innovation could completely change how we think about dental care\u2014shifting from artificial fixes to actual biological regrowth. If it pans out, trips to the dentist might one day look a whole lot different.