Gage J P
Aust Dent J. 1978 Oct;23(5):400-4. doi: 10.1111/j.1834-7819.1978.tb02395.x.
Various methods of preparing anterior fixed bridges are described. Retention is gained by the use of slots, three-quarter crowns and suitably placed wrought or cast pins. The use of a number of paralleling devices is described.