Impact of Printing Orientations on the Trueness and Precision of Additively Fabricated Complete Denture Base Before and After Thermal Aging
Year: 2025
Type: article
Abstract: Objectives: This in vitro study assessed the accuracy (trueness and precision) of different 3D-printed resin denture bases with 0°, 45°, and 90° printing orientations. Methods: Denture base was designed and fabricated using three 3D-printed denture base resins (DentaBASE, Denture 3D+, and FormLabs). Each resin was printed with its own printer and fabricated with different printing orientations, resulting in a total of 72 specimens (n = 8). Trueness and precision were evaluated before and after thermal aging using the superimposition method with best-fit alignment. The data were collected and analyzed using two-way ANOVA followed by post hoc Tukey’s test (α = 0.05). Results: The printing orientation significantly affected the trueness of 3D-printed resins (p < 0.001). The highest trueness was observed for NextDent at 0° printing orientation, while the lowest value was observed for ASIGA at 0° and 45° printing orientations. The precision of the denture base was significantly affected by different printing orientations for ASIGA (p = 0.006) and NextDent (p < 0.001) before thermal cycling, while the precision of FormLabs was significantly affected (p = 0.017) after thermal cycling. The highest precision was recorded for FormLabs at 45° printing orientation, while the lowest precision was observed for NextDent at 45° and 90° printing orientations. Moreover, the effect of thermal cycling on trueness was only significant for ASIGA at 0° printing orientation; however, the effect of thermal cycling on precision was significant for NextDent at 0° and 90° printing orientations. A 45° printing orientation provided the most accurate clinical fit. Conclusions: ASIGA showed the lowest trueness, while FormLabs exhibited the lowest precision, revealing performance differences between printers.
Source: Dentistry Journal
DOI: 10.3390/dj13120598
Authors: Sara Tarq AL-Zayyat, Turki Alshehri, Shahad T. Alameer, Sarah Hajaj Althunayyan, Reem A. Aldhafiri, Zainab Albasry, Abdulrahman A. Balhaddad, Haidar Alalawi, Mohammed M. Gad
Language: English
Subfield: Orthodontics
Field: Dentistry
Domain: Health Sciences
Open Access status: gold
Estimated APC paid: $2,413
OpenAlex ID: W7114906207