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.
What to expect during healing of a Clavicle Fracture: While the. bone heals usually within 2-3 months, recovery takes much longer. Typically most of the recovery is completed by 3-5 months. Some. stiffness in the shoulder can happen after these injuries, but usually. resolves by 6 months after the injury. Sometimes, the clavicle. fracture does not heal. This can happen with fractures that were. treated with surgery or without.