EXHIBIT 1.1 Underwriting Agreement March [__], 2000 FleetBoston Robertson Stephens Inc. U.S. Bancorp Piper Jaffray Inc. Gerard Klauer Mattison & Co., Inc. As Representatives of the Several Underwriters c/o FleetBoston Robertson Stephens Inc. 555...Underwriting Agreement • February 28th, 2000 • Orapharma Inc • Pharmaceutical preparations • New York
