Impact of additional polishing on the roughness and surface morphology of dental composite resins
| Autor: | Giovanna de Fátima Alves da Costa, Boniek Castillo Dutra Borges, Ana Carla Bezerra de Carvalho Justo Fernandes, Isauremi Vieira de Assunção |
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| Jazyk: | angličtina |
| Předmět: |
Dental composite
Materials science Microscopia eletrónica de varredura Dental materials Scanning electron microscope 0206 medical engineering Composite number Polishing Dentistry 02 engineering and technology Surface finish engineering.material 03 medical and health sciences 0302 clinical medicine Composite resin Surface roughness Texture (crystalline) Composite material Rugosidade superficial General Dentistry Dental polishing business.industry Resina composta Diamond 030206 dentistry 020601 biomedical engineering Polimento dentário Materiais dentários engineering Surgery business Scanning electron microscopy |
| Zdroj: | Revista Portuguesa de Estomatologia, Medicina Dentária e Cirurgia Maxilofacial. (2):74-81 |
| ISSN: | 1646-2890 |
| DOI: | 10.1016/j.rpemd.2016.03.004 |
| Popis: | Objectives This study evaluated the surface roughness and morphology of microfilled (Durafill VS) and nanohybrid (Evolu-X) composite resins submitted to different finishing/polishing systems, with or without further additional polishing. Methods 70 specimens were fabricated and distributed to 14 sample groups (n = 5 per group). The Mylar strip (MS) was the control group. Sof-Lex Pop-on (SP) and Praxis TDV (PTDV) were finishing/polishing systems used in the experimental groups. Additional polishing was performed with either a felt disc moistened with diamond paste (FP), or just a silicon carbide brush (SCB). Roughness (Ra) was measured and scanning electron microscopy (SEM) images were obtained. Data were subjected to two-way ANOVA and Tukey (p Results The SP (0.186 and 0.250 μm) finishing/polishing systems produced a smoother surface compared with a PTDV (0.208 and 0.296 μm). The Evolu-x (EVO) resin showed lower roughness. After the additional polishing with FP, there was no difference between the resins tested and values of roughness. SEM suggests smoother Durafill VS (DUR) surface when polishing is carried out with PTDV + FP. SP provided an Evolu-x surface with fewer grooves and scratches. Evolu-x surfaces treated with PTDV and SP + SCB had a more irregular topography. Conclusion Furthermore, the FP offered a smoother and uniform texture to the surface of both resins independent of the previous treatment. The SCB offered a smoother texture to the surface of the DUR resin than EVO. |
| Databáze: | OpenAIRE |
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