Influence of the retentional lattice form on the dimensional accuracy of CP titanium cast plates

概要

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Because the retentional lattice form is a factor in the deformation and fit of commercial pure (CP) titanium cast plates, we performed experiments to evaluate six forms (the mesh, ladder, and non-perforated types, each with the outline within or beyond the alveolar crest). Although dimensional changes were significantly smaller for the non-perforated type than for the mesh or ladder types, they were similar for the two latter types. We also found that, dimensional changes for the outline within the alveolar crest were significantly greater than for those beyond the alveolar crest. Dimensional changes were significantly smaller in the vertical direction than in the horizontal direction for all forms. Although the amount of elevation (discrepancy) in the palatal posterior margin was greatest for the mesh type irrespective of the position of the lattice outline, it was very little for the non-perforated and ladder types. These results suggest that the ladder type, retentional lattice form with its outline within the alveolar crest is the most appropriate for CP titanium cast plates.
大阪歯科学会の論文