Titanium Particles Trigger Immune Chaos in Dental Implant Infections

Rutgers researchers reveal that corrosion of titanium dental implants releases nano-particles that attract a bacterial toxin and are engulfed by macrophages, locking them in a hyperinflammatory state that impairs bacterial clearance and drives bone loss; the effect is mediated by the TRPC1 calcium channel, and mice lacking TRPC1 showed reduced disease, pointing to a new drug target for peri-implantitis. The study, published in PNAS Nexus, also emphasizes nonabrasive cleaning methods and regular maintenance to lower risk, and could lead to therapies for up to one in five implant recipients, a multibillion-dollar annual issue.