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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Physical-Mechanical Properties of Bulk Fill Composites Submitted to Biodegradation by Streptococcus mutans

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Author(s):
Jessica Rodrigues Camassari [1] ; Lourenço Correr-Sobrinho [2] ; Américo Bortolazzo Correr [3] ; Julia Puppin-Rontani [4] ; Rafael Nobrega Stipp [5] ; Regina Maria Puppin-Rontani [6] ; Andreia Bolzan de Paula [7]
Total Authors: 7
Affiliation:
[1] Universidade Estadual de Campinas. Dental Materials Division, Piracicaba Dental School. Department of Restorative Dentistry - Brasil
[2] Universidade Estadual de Campinas. Dental Materials Division, Piracicaba Dental School. Department of Restorative Dentistry - Brasil
[3] Universidade Estadual de Campinas. Dental Materials Division, Piracicaba Dental School. Department of Restorative Dentistry - Brasil
[4] Universidade Estadual de Campinas. Dental Materials Division, Piracicaba Dental School. Department of Restorative Dentistry - Brasil
[5] Universidade Estadual de Campinas. Piracicaba Dental School. Department of Oral Diagnosis - Brasil
[6] Universidade Estadual de Campinas. Piracicaba Dental School. Department of Health Sciences and Pediatric Dentistry, Pediatric Dentistry Division - Brasil
[7] Universidade Estadual de Campinas. Dental Materials Division, Piracicaba Dental School. Department of Restorative Dentistry - Brasil
Total Affiliations: 7
Document type: Journal article
Source: Brazilian Dental Journal; v. 31, n. 4, p. 431-439, 2020-09-04.
Abstract

Abstract The aim of this study was to evaluate the Streptococcus mutans biofilm influence on the roughness (Ra), gloss (GU), surface hardness (KHN) and flexural strength (FS) of high viscosity bulk fill composites. Filtek Bulk Fill (FBF), Tetric N Ceram Bulk Fill (TNC), X-tra fil Bulk Fill (XF) and Filtek Z350 (FZ) were used. Ten discs of each composite were prepared for Ra, KHN and GU and 20 bars for the FS. After 24 h, specimens were polished and initial analyzes performed. Samples were sterilized and subjected to biodegradation for 7 days and final analyzes performed. Representative samples of each group were evaluated in Scanning Electron Microscope. Data were submitted to ANOVA two factors and Tukey test. XF presented the highest values (p<0.05) of Ra before and after biodegradation (0.1251; 0.3100), and FZ (0.1443) the lowest after biodegradation (p<0.05). The highest GU values (p<0.05) were observed for FZ (71.7; 62) and FBF (69.0; 64.6), and the lowest (p<0.05) for TNC (61.4; 53.3) and XF (58.5; 53.5), both before and after biodegradation. For KHN the highest values were obtained by XF (151.7; 106), and the (p< 0.05) lowest values for TNC (62.2; 51.8), both before and after biodegradation. The highest values (p<0.05) of FS were observed for FZ (127.6) and the lowest (p<0.05) for TNC (86.9); after biodegradation, XF (117.7) presented the highest (p<0.05) values compared to TNC and FZ.” In conclusion, biodegradation increased Ra and decreased GU and KHN for all. Concerning FS, degradation provided a significant decreased value only for FZ. (AU)

FAPESP's process: 16/18720-8 - Biodegradation influence by s. mutans cariogenic biofilm in the physicomechanical properties of Bulk Fill composites
Grantee:Jéssica Rodrigues Camassari
Support Opportunities: Scholarships in Brazil - Master