Clinical and experimental dental research · 2026
Surface Properties, Color Stability, and Bacterial Adhesion of Implant-Supported Provisional Restorative Materials: In Vitro Study.
СтатьяНазвание и аннотация: Перевод пока не подготовлен
Обработка статьи · этапы, ошибки и управление
Загрузка состояния…
Ошибки и ограничения
История · было → стало
Состояние обновляется каждые 5 секунд, пока блок открыт. Процент показывается только там, где известен объём работы. Пауза останавливает продолжение этапа; текущий запрос к источнику может завершиться.
Galvão Júlia Bárbara Medeiros, Costa Richelle Nunes, da Silva Bezerra Aliane, Marinho Liliane Cristina Nogueira, de Barros Pascoal Ana Luísa, de Souza Pedro Henrique Sette, Batista André Ulisses Dantas, Dos Santos Calderon Patrícia
Аннотация
OBJECTIVES: To evaluate surface roughness, wettability, color stability, and bacterial adhesion of different materials used in implant-supported provisional restorations.
MATERIALS AND METHODS: Eighty samples (6 × 6 × 2 mm ± 0.2 mm) were fabricated and distributed into four groups (n = 20): Bis-acryl composite resin (BCR); CAD-CAM PMMA resin (Milled); Auto-polymerized acrylic resin (APR); prefabricated acrylic tooth (PT). Surface roughness was measured using a 3D optical profilometer, wettability by the sessile drop method, and color stability with a spectrophotometer after immersion in distilled water and coffee. Bacterial adhesion was assessed through Streptococcus mutans biofilm formation and quantified spectrophotometrically after crystal violet staining. Data were analyzed using Kruskal-Wallis and one-way ANOVA with Tukey's post hoc test (α = 0.05).
RESULTS: Bis-acryl composite resin (BCR) showed the lowest surface roughness, while prefabricated acrylic tooth (PT) exhibited higher roughness and contact angle values (p < 0.001) and the greatest color change (ΔE ≥ 3.3). BCR demonstrated the highest bacterial adhesion, whereas CAD-CAM PMMA resin (Milled) showed the lowest adhesion.
CONCLUSIONS: The behavior of provisional restorative materials is influenced by their composition, affecting surface, optical, and biological performance. Lower surface roughness did not result in reduced biofilm formation. CAD/CAM-milled and Auto-polymerized resins showed more favorable overall performance.
MATERIALS AND METHODS: Eighty samples (6 × 6 × 2 mm ± 0.2 mm) were fabricated and distributed into four groups (n = 20): Bis-acryl composite resin (BCR); CAD-CAM PMMA resin (Milled); Auto-polymerized acrylic resin (APR); prefabricated acrylic tooth (PT). Surface roughness was measured using a 3D optical profilometer, wettability by the sessile drop method, and color stability with a spectrophotometer after immersion in distilled water and coffee. Bacterial adhesion was assessed through Streptococcus mutans biofilm formation and quantified spectrophotometrically after crystal violet staining. Data were analyzed using Kruskal-Wallis and one-way ANOVA with Tukey's post hoc test (α = 0.05).
RESULTS: Bis-acryl composite resin (BCR) showed the lowest surface roughness, while prefabricated acrylic tooth (PT) exhibited higher roughness and contact angle values (p < 0.001) and the greatest color change (ΔE ≥ 3.3). BCR demonstrated the highest bacterial adhesion, whereas CAD-CAM PMMA resin (Milled) showed the lowest adhesion.
CONCLUSIONS: The behavior of provisional restorative materials is influenced by their composition, affecting surface, optical, and biological performance. Lower surface roughness did not result in reduced biofilm formation. CAD/CAM-milled and Auto-polymerized resins showed more favorable overall performance.