A St. Petersburg dental technology firm is one of the first companies in the United States with regulatory approval to seek capital as part of a process dubbed "IPO Lite." Sun Dental Labs plans to raise as much as $50 million under recently revamped rules that allow companies to raise relatively small amounts of capital through the sale of securities to the general public without incurring the full cost of registration and reporting. Mandated as part of the Jumpstart Our Business Startups,...