Roughness and stain durability of additively manufactured zirconia after simulated erosive, abrasive, and thermal intraoral challenges.

Key Points

• This study aims to assess and compare the surface roughness and stain durability of additively manufactured zirconia with subtractively manufactured zirconia and lithium disilicate.
• In vitro comparison of surface roughness and stain durability after erosive, abrasive, and thermal challenges.
• Assessment of Ra values among different zirconia groups and lithium disilicate.
• Statistical analysis with significance level set at α=.05.
• Additively manufactured zirconia exhibited moderate surface roughness.
• Noneroded subtractively manufactured lithium disilicate showed a significant difference in stain durability (P=.003).
• Overall durability was moderately unacceptable except for the noneroded SM-LD group, which had a perceptible color change.

Abstract