Masking ability of bleach-shade resin composites using the multilayering technique
| Autor: | Javier Ruiz-López, Letícia Brandão Durand, Andressa Dalmolin, María M. Pérez, Bibiana Gabardo Perez, Bruna Gaidarji, Roberta Maronesi Lehr |
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| Rok vydání: | 2021 |
| Předmět: |
Masking (art)
Lightness Ceramics Materials science 0206 medical engineering Color 02 engineering and technology Composite Resins 03 medical and health sciences 0302 clinical medicine Materials Testing Dentin medicine Ceramic Composite material General Dentistry Color difference Enamel paint 030206 dentistry 020601 biomedical engineering Dental Porcelain medicine.anatomical_structure Colored visual_art visual_art.visual_art_medium Layer (electronics) |
| Zdroj: | Journal of esthetic and restorative dentistry : official publication of the American Academy of Esthetic Dentistry ... [et al.]REFERENCES. 33(5) |
| ISSN: | 1708-8240 |
| Popis: | Objective Evaluate the masking ability of bleach-shade resin composites applied by multilayering techniques over colored substrates. Materials and methods Disc-shaped specimens were fabricated from bleach-shade resin composites using different multilayering techniques. Substrates were produced in opaque ceramic discs simulating colored substrates (A2, A3, A3.5, C2, C3, C4) and a bleached tooth (0M1). Color coordinates were obtained using a reflectance spectrophotometer. Color difference was calculated by CIEDE2000 using coordinates of 0 M1 ceramic as standard reference. Data were analyzed by one-way ANOVA and Tukey's post-hoc test (p ≤ 0.05). Masking ability interpretation was based on perceptibility and acceptability thresholds. Results All combinations presented ΔE00 above the acceptable threshold (ΔE00 >1.8), ranging from 2.49 to 7.42, regardless of the restorative system, multilayering strategy or substrate color. Multilayering combinations placed over A2, A3 and A3.5 were moderately (1.8 5.4). Lower ΔE00 was observed for combinations with 0.5 mm extra white enamel layer (2.49), or 1.0 mm white dentin layer (2.69), over A2 and A3.5 substrates. Lightness difference showed the greatest contribution to ΔE00 . Conclusions Bleach-shade resin composite systems applied by the multilayering technique were not able to ensure effective masking ability. Clinical significance Bleach-shade resin composites applied with different combinations of the multilayering technique were not effective in masking colored substrates. Alternative strategies, techniques and dental materials should be explored to obtain acceptable masking. |
| Databáze: | OpenAIRE |
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