Direct-printed aligners have proven to be more cost effective and accurate. However, the post-curing process might affect their dimensional accuracy, leading to unwanted tooth movement. The present study aimed to investigate the effect of different post-curing durations on the location specific accuracy of direct-printed aligners.
A stereolithography printer was used to produce 30 aligners using Dental LT V2 resin. The aligners were randomly assigned into 3 groups (
Deviations were maximum in the ‘No cure’ group but were statistically insignificant (
Post-print ultraviolet light curing is a crucial step to ensure the rigidity of the direct-printed aligner. However, increasing the duration of light curing has little effect on aligner accuracy.