Dr. Abraham L. Edelson, 70, a Washington dentist for 40 years before retiring to Hallandale, Fla., five months ago, died Sunday in the Memorial Hospital in Hollywood, Fla., as a result of injuries he suffered in an Aug. 15 traffic accident.

Dr. Edelson was a passenger in a car that collided with a dump truck in Pembroke Pines, Fla. His wife, Mollie L. Edelson, also a passenger in the auto, died at Memorial Hospital the day of the accident as a result of her injuries according to a hospital spokesman.

The driver of the car, Paul Glassman of Roslyn, N.Y., and his wife, Gladys, the third passenger and a sister of Mrs. Edelson, are in fair condition at the Pines General Hospital in Pembroke Pines, according to a spokesman for the hospital.

The driver of the dump truck was treated at a local hospital and released. The accident is still under investigation according to Pembroke Pines police.

Dr. Edelson was a native of Washington and a graduate of Eastern High School. He earned his dental degree at Georgetown University.

He met his wife, who was a New York City native, while they both were vacationing in Florida 31 years ago. Following their marriage, Mrs. Edelson worked in her husband's office.

Dr. and Mrs. Edelson lived in Bethesda and then Washington until retiring to Florida.

Dr. Edelson was a member of the Adas Israel Congregation in Washington.

Dr. and Mrs. Edelson are survived by a son, Steven, of New York City, and a daughter, Leslie E. Serwatka of El Paso, Tex. Dr. Edelson also is survived by two sisters, Bella Fodor of Seminole, Fla., and Gertrude Goldberg of Huntington Station, N.Y. In addition to her sister, Gladys Glassman, Mrs. Edelson is survived by another sister, Rhoda Aronson of Miami, and a brother, Harold Laver of Long Island.