[Lightweight construction--sense and nonsense]

Lightweight construction techniques make sense as long as certain basic principles are observed. This requirement is best met by the shell construction technique. Lightweight constructions using the ultralite foil technique have considerable shortcomings, and it is only in rare cases that they may be used on a long-term basis. The assessment of the expected chewing forces as well as the shape and dimension of the bridge, limited by the given clinical conditions of the case, are the factors governing the decision for a specific framework construction. The design of the interproximal spaces requires particular attention. The most economical solution is a durable construction involving low material and production costs.