Digital Replication technique may accurately restore original crown morphology, suggests study
Researchers have found in a new study that Digital replication technique successfully restored the original crown morphology with high accuracy. However, the dimensional accuracy of all-ceramic crowns varied with the type of CAD/CAM porcelain material used, with lithium disilicate glass-ceramic demonstrating the most superior results.
The study aimed to evaluate the three-dimensional accuracy of computer-aided design and computer-aided manufacturing (CAD/CAM) in fabricating all-ceramic crowns using various cuttable materials, assessed through reverse engineering.
The original resin tooth morphology of the left maxillary mesial incisor and left maxillary first molar from a standard resin tooth model, along with the two corresponding prepared teeth, were scanned and imported into exocad software. The digitally reproduced crown morphology was utilized to fabricate crowns from cut porcelain-reinforced resin ceramic (Uh group, Upcera Hyramic), lithium disilicate glass-ceramic (e.max group, IPS e.max Cad), and zirconia ceramic (Ue group, Upcera Explore).
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