FORSTMANN LITTLE AND CO TO SELL UNIT <Forstman Little and Co> said it plans to sell its Sybron Corp unit, a leading maker and marketer of dental and laboratory products, for an undisclosed sum. Forstmann Little said it acquired Sybron in February 1986 and since that time Sybron has been substantially restructured, with new management, lower corporate overhead and a new location in Saddle Brook, N.J. Fortsmann Little said <Goldman Sachs and Co> will act as its financial advisor for the move. It added that Sybron expects revenues for the current fiscal year of 242 mln dlrs with operating income of about 51 mln dlrs.