Dönmez, Mustafa BorgaWepfer, Alena BrunaGüven, Mehmet EsadÇakmak, GülceSchimmel, MartinYılmaz, Burak2025-04-182025-04-182024Dönmez, M. B., Wepfer, A. B., Güven, M. E., Çakmak, G., Schimmel, M., & Yilmaz, B. (2024). Dimensional stability of additively manufactured diagnostic maxillary casts fabricated with different model resins. Int. J. Prosthodont, 37, 119-126.08932174https://hdl.handle.net/20.500.12713/6380Purpose: To evaluate the effect of model resin type and time interval on the dimensional stability of additively manufactured diagnostic casts. Materials and Methods: Ten irreversible hydrocolloid impressions and 10 impressions from an intraoral scanner were made from a reference maxillary stone cast, which was also digitized with a laboratory scanner. Conventional impressions were poured in type III stone (SC), while digital impressions were used to additively manufacture casts with a nanographene-reinforced model resin (GP) or a model resin (DM). All casts were digitized with the same laboratory scanner 1 day (T0), 1 week (T1), 2 weeks (T2), 3 weeks (T3), and 4 weeks (T4) after fabrication. Cast scans were superimposed over the reference cast scan to evaluate dimensional stability. Data were analyzed with Bonferroni-corrected repeated measures ANOVA (α =.05). Results: The interaction between the main factors (material type and time interval) affected anterior teeth deviations, while the individual main factors affected anterior teeth and entire-cast deviations (P ≤.008). Within anterior teeth, DM had the lowest deviations at T3, and GP mostly had lower values at T2 and lower deviations at T3 than at T0 (P ≤.041). SC had the highest pooled anterior teeth deviations, and GP had the highest pooled entire cast deviations (P <.001). T3 had lower pooled anterior teeth deviations than at T0, T1, and T4, and higher pooled entire cast deviations than T1 were demonstrated (P ≤.027). Conclusions: The trueness of nanographene-reinforced casts was either similar to or higher than that of other casts. Dimensional changes were acceptable during the course of 1 month. © 2024 by Quintessence Publishing Co Inc.eninfo:eu-repo/semantics/closedAccessComputer-Aided DesignDental Impression TechniqueMaxillaComputer Aided DesignDental İmpressionArticle37S119S1262-s2.0-8518844149810.11607/ijp.8877Q2