Â­. Â­Dry ice is frozen carbon dioxide. A block of dry ice has a surface temperature of -109.3 degrees Fahrenheit (-78.5 degrees C). Dry ice also has the very nice feature of sublimation -- as it breaks down, it turns directly into carbon dioxide gas rather than a liquid.
The time for a broken collarbone to fully heal depends on the severity of the injury. In children, complete healing may take as little as three to six weeks. In adults, six to 16 weeks or more are often necessary for a collarbone to heal solidly.
3 doctors agreed: About 8 to 12 weeks: Every injury is a little different so please talk to your surgeon. On average, children heal fractures faster than adults. The collar bone (clavicle) should heal in about 8 weeks and should be able to resume sports in about 12 weeks after the surgery. Each patient is different and the time frame changes depending on how the fracture is healing, so please discuss this with your surgeon. ...Read more.