Digital impressions comparable to conventional impressions for complete denture fabrication in maxillary edentulism: Study

In the conventional group, a two-step impression (C1) using an individual tray with zinc oxide eugenol and a one-step simplified impression (C2) using a stock tray with irreversible hydrocolloid were made. The comparison groups were determined to be C1-C2, C1-D1, D1-D2, and D1-D3. The best-fit algorithm was used to superimpose the impressions to be compared.

The right and left vestibular areas, postdam area, palatal area, right and left matching area, entire surface, and borders were evaluated separately. Results: Fifteen patients were included in this study. In the C1-C2 group, the mean deviation at the borders was statistically significant (p = 0.01). No regions in the C1-D1 and D1-D3 groups exhibited significant differences in the mean amount of deviation (p > 0,05). In the D1-D2 group, the mean deviation in the palatal area was significant (p = 0,03). In maxillary edentulism, digital impressions have shown comparable results to conventional impressions, suggesting promising implications for clinical applications.

Reference:

Kahya Karaca, S., Akca, K. Comparison of conventional and digital impression approaches for edentulous maxilla: clinical study. BMC Oral Health 24, 1378 (2024). https://doi.org/10.1186/s12903-024-05151-3