Joanne Elaine Slicer, daughter of Mrs. Theresa E. Oehmann of Bethesda and the late William A. Slicer, exchanged marriage vows with Dr. Robert Raymond Mantoni, son of Mrs. Rudy Mantoni of Rockville and the late Mr. Mantoni, in St. Bartholomew's Catholic Church on October 27. The reception and dinner was held at Bethesda Country Club.

Escorted by her stepfather, John C. Oehmann, the bride wore a gown of satin organza trimmed with pearled lace complemented by a matching fingertip veil, and she carried a bouquet of silk white roses. Vickie Bobinger was maid of honor. Mrs. Shirley Kramer and Mrs. Jean Blinkhorn were the bridesmaids. Kenneth Fleischmann served as best man and the groomsmen were Jack Kramer and Michael Mantoni.

Mrs. Mantoni, a member of Alpha Lambda Delta and Phi Kappa Phi honor societies, graduated cum laude with a BS in dental hygiene from the University of Maryland School of Dentistry from which Dr. Mantoni received a DDS. His fraternities are Delta Upsilon, Xi Psi Phi Dental as well as Gamma Pi Delta and the Gorgas Odontological honor societies. They spent their honeymoon in the Virgin Islands and now live in Silver Spring where Dr. Mantoni is in private practice.