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Metal bridges are the strongest and most durable type of restoration. They also require less alteration of a patientâs natural tooth structure. On the other hand, metal bridges restorations will not correspond with a patientâs smile.
The major types are: 1  Skip tooth (or single skip tooth) which have a tooth, a gap, and then another tooth; 2  Double skip tooth (two teeth, a gap, then two teeth); 3  Crown or two-way, which have teeth facing both up and down so that the blade cuts on both the down-stroke (as with all other blades) and the up-stroke;