Train Full of Cars Tries To Go Under a Bridge, Causes $2 Million Damage

‎Maryam Kazman / مریم کازمن‎ on Instagram: "A middle age female patient came to me with a huge, gross amount of calculus on her lower front teeth. To her, it felt like a solid wall, but it was actually a ‘calculus bridge’, a toxic splint of bacteria masking a disaster. Why do the lowers get hit the hardest? The Gravity Well: Being the lowest point in the mouth, gravity causes saliva and debris to pool and stagnate there. Mineral Bombardment: The salivary glands open right there, acting like liqu