There’s a fairly good chance of saving a knocked-out tooth if you act quickly and properly, dental experts say. Dental mishaps, usually to front upper teeth, are particularly common during sports activities. A dentist can often reimplant the tooth in the jaw so long as you take it promptly to the dentist’s surgery or a hospital casualty department, according to proDente, a Cologne-based dental health information organization. Successful reimplanatation also depends on storing the tooth properly in the meantime. It’s critical to keep the sensitive tissue on the root surface alive. So the tooth …