Viral Dental Video Shows Close-Up of Deep Cavity as Dentist Demonstrates Early Tooth Decay Warning Signs San Diego, CA — A routine checkup turned into an educational moment now circulating widely online after a local dentist recorded a detailed close-up of a patient’s molar, revealing an advanced cavity and demonstrating how decay progresses beneath the enamel long before patients notice symptoms. The video, filmed using a high-resolution intraoral camera, shows the dentist using a metal explore