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.
A sling, shown on the left, is often more comfortable than a figure of eight bandage, but both are commonly used to treat a clavicle fracture. How long does a broken collarbone take to heal? The younger you are when you break your clavicle, the less time it takes for the fracture to heal. Children will heal a broken bone in 3 to 4 weeks, teenagers will need 6 to 8 weeks before the broken clavicle completely heals, and adults may take up to four months. During this period of time, it is important that you make sure that your shoulder, elbow, wrist and hand does not get stiff.