Impact of digital fabrication techniques on the color stability of complete dentures base and artificial teeth
Year: 2025
Type: article
Abstract: BACKGROUND: This study evaluated the color stability of digitally fabricated complete dentures compared to conventional ones. MATERIALS AND METHODS: Forty-five specimens were fabricated using 3 different manufacturing methods (injection mold, one-piece milling, and two-piece 3D printing and milling techniques), with 15 specimens per group. After implementing a standardized polishing protocol, each group was randomly subdivided into three subgroups (n = 5) and immersed in distilled water, coffee, and red wine for seven days at a controlled temperature of 37 °C. Color changes in denture teeth and base materials were evaluated utilizing VITA Easyshade and ImageJ software before and after immersion. Subsequently, all specimens underwent a manufacturer-recommended denture cleansing regimen for seven days, followed by a repeated staining cycle. Two-way ANOVA and Tukey post-hoc tests were used for statistical analysis (α = 0.05), while the prevalence of denture tooth shade change was reported descriptively. RESULTS: The finding revealed that coffee caused more discoloration than red wine. Milled specimens showed better color stability against red wine than conventionally fabricated dentures. While initial staining was noted, the cleaning protocol successfully restored the original colors. This pattern persisted with repeated staining, highlighting the importance of material selection and maintenance in maintaining denture aesthetics. CONCLUSIONS: Exposure to coffee and red wine leads to noticeable color changes in both denture teeth and base materials. The degree of staining depends on the specific material composition, highlighting the importance of selecting stain-resistant materials for better long-term color stability.
Source: BMC Oral Health
Language: English
Subfield: Orthodontics
Field: Dentistry
Domain: Health Sciences
Open Access status: gold
Estimated APC paid: $3,190
Funders: Natural Science Foundation of Jilin Province, Holsworth Wildlife Research Endowment, Fundació la Marató de TV3, Deutsches Zentrum für Infektionsforschung, Ministerio de Ciencia, Innovación y Universidades, National Peanut Board, British Society for Antimicrobial Chemotherapy, Deutsche Forschungsgemeinschaft, Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung, National Natural Science Foundation of China, Coordenação de Aperfeiçoamento de Pessoal de Nível Superior, Taibah University, Nederlandse Organisatie voor Wetenschappelijk Onderzoek, Science and Technology Commission of Shanghai Municipality, Conselho Nacional de Desenvolvimento Científico e Tecnológico, National Research Foundation of Korea, Vetenskapsrådet, Natural Science Foundation of Shanxi Province, Mashhad University of Medical Sciences, Fundação de Amparo à Pesquisa do Estado de Minas Gerais, Universidade de Vigo, Ministry of Science and ICT, South Korea, Bethune Ethicon Excellent Surgery Foundation, National Institutes of Health, National Institute of Food and Agriculture, Agricultural Research Service, Horizon 2020 Framework Programme, Australian Research Council, Japan Society for the Promotion of Science, Agència de Gestió d'Ajuts Universitaris i de Recerca, Instituto de Salud Carlos III, National Beef Cattle Industrial Technology System, National Institute of General Medical Sciences, National Institute of Diabetes and Digestive and Kidney Diseases, Eunice Kennedy Shriver National Institute of Child Health and Human Development
OpenAlex ID: W7116770898