Abstract
Patents on suction cup dentures were issued to J. Spyer and R. S. Ingalls in 1885.1, ~ These patents covered multiple projections on the tissue (basal) surface of dentures. A patent was issued in 1907 to G. W. Morgan for suction cavities in a soft rubber sheet. 3 A large number of other devices have been proposed/ but all of them failed to meet the requisites of simplicity, comfort, permanency, tissue tolerability, and practicability. Since 1952 I have experimented with attaching individual suction cups, strips of suction cups, and group sections of cups to dentures. These were made of latex rubber, polyethylene, vinyl polymers, soft methyl methacrylates, mercaptan rubbers, and silicone elastomers. Most of these materials were too hard, or would not remain soft. Latex rubber was quite comfortable to patients, but it quickly deteriorated in the saliva. All of the materials, except the silicones, present difficult technical problems which add excessively to the cost of construction.
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