Katsu Takahashi, head of the dentistry and oral surgery department at Kitano Hospital, second from left, and other members of the research team, hold a news conference at the hospital in Osaka's Kita Ward on May 2, 2024. (Mainichi/Yosuke Tsuyuki) OSAKA -- Clinical trials of the world's first "tooth regrowth medicine" are set to commence in September at Kyoto University Hospital, researchers announced here on May 2. Once the medicine's safety is confirmed, it will be given to patients congenitall...