Journal of prosthodontics : official journal of the American College of Prosthodontists · 2026
Effectiveness of plasma-enhanced chemical vapor film in surface treatments of resin-matrix ceramics to preserve optical characteristics after different aging processes.
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Nascimento Victor Alves, Cruz Kevin Henrique, Silva Lorena Scaion, de Limírio João Pedro Justino de Oliveira, Albergardi Ana Beatriz de Souza, Rangel Elidiane Cipriano, Pesqueira Aldiéris Alves
Аннотация
PURPOSE: The aim of this study was to evaluate the surface roughness and optical characteristics of three ceramics with resin matrix for computer-aided design and computer-aided manufacturing, after different surface treatment protocols associated or not with the application of film deposition by plasma-enhanced chemical vapor deposition (PECVD) after different in vitro aging procedures.
MATERIALS AND METHODS: A total of 720 specimens were prepared and divided into groups: mechanical polishing (MP), sealant (S), MP + PECVD, and S + PECVD. The in vitro aging procedures were thermocycling, erosive challenge, and immersion in dye solution (I): distilled water (IW), black tea (IBT), and red wine (IRW). The response variables were surface roughness (Ra), color change (ΔE00), translucency parameter (TP), and contrast ratio (CR). For multiple comparisons, the three-way analysis of variance test was used, followed by Tukey's post hoc test (α = 0.05).
RESULTS: Aging increased roughness in all ceramics, whereas the surface sealant reduced Ra more effectively than MP, even with PECVD. The red wine solution showed the highest staining potential, followed by black tea and distilled water (p > 0.05). In the IRW, there was a significant reduction (>50%) in the ΔE00 values in both surface treatments associated with PECVD for all ceramics. Aging caused changes in the TP and CR values of the ceramics (more opaque).
CONCLUSION: Film deposition by PECVD was beneficial in reducing color change when immersed in black tea and red wine.
MATERIALS AND METHODS: A total of 720 specimens were prepared and divided into groups: mechanical polishing (MP), sealant (S), MP + PECVD, and S + PECVD. The in vitro aging procedures were thermocycling, erosive challenge, and immersion in dye solution (I): distilled water (IW), black tea (IBT), and red wine (IRW). The response variables were surface roughness (Ra), color change (ΔE00), translucency parameter (TP), and contrast ratio (CR). For multiple comparisons, the three-way analysis of variance test was used, followed by Tukey's post hoc test (α = 0.05).
RESULTS: Aging increased roughness in all ceramics, whereas the surface sealant reduced Ra more effectively than MP, even with PECVD. The red wine solution showed the highest staining potential, followed by black tea and distilled water (p > 0.05). In the IRW, there was a significant reduction (>50%) in the ΔE00 values in both surface treatments associated with PECVD for all ceramics. Aging caused changes in the TP and CR values of the ceramics (more opaque).
CONCLUSION: Film deposition by PECVD was beneficial in reducing color change when immersed in black tea and red wine.