Your browser doesn't support javascript.
loading
Influence of a hydrophobic monomer on the physical and mechanical properties of experimental surface sealants
Giorgi, Maria Cecília Caldas; Vogt, Amalie Perez; Corneta, Carina de Jesus; Velo, Marilia Mattar de Amoêdo Campos; Lima, Débora Alves Nunes Leite; Baron, Giselle Maria Marchi; Aguiar, Flávio Henrique Baggio.
  • Giorgi, Maria Cecília Caldas; Universidade Estadual do Amazonas. School of Health Sciences. Manaus. BR
  • Vogt, Amalie Perez; Universidade Estadual de Campinas. Piracicaba Dental School. Department of Restorative Dentistry. Piracicaba. BR
  • Corneta, Carina de Jesus; Universidade Estadual de Campinas. Piracicaba Dental School. Department of Restorative Dentistry. Piracicaba. BR
  • Velo, Marilia Mattar de Amoêdo Campos; Universidade de São Paulo. Bauru School of Dentistry. Department of Operative Dentistry, Endodontics and Dental Materials. Bauru. BR
  • Lima, Débora Alves Nunes Leite; Universidade Estadual de Campinas. Piracicaba Dental School. Department of Restorative Dentistry. Piracicaba. BR
  • Baron, Giselle Maria Marchi; Universidade Estadual de Campinas. Piracicaba Dental School. Department of Restorative Dentistry. Piracicaba. BR
  • Aguiar, Flávio Henrique Baggio; Universidade Estadual de Campinas. Piracicaba Dental School. Department of Restorative Dentistry. Piracicaba. BR
Braz. oral res. (Online) ; 32: e108, 2018. tab
Article in English | LILACS | ID: biblio-974457
ABSTRACT
Abstract This study evaluated the effect of adding the hydrophobic monomer 1,12 dodecanediol dimethacrylate (DDDMA) to experimental sealants with and without thermocycling on degree of conversion (DC), water sorption (WS), water solubility (WSB), color stability (ΔE), and micro-shear bond strength (μSBS). Five experimental and one commercially available sealant (Bisco - BIS) were tested. The experimental sealants were formulated by mixing different percentages of DDDMA monomers and urethane dimethacrylate (UDMA). The photoinitiator system was composed by camphorquinone (CQ) and tertiary amine 4-ethyl benzoate dimetilamiono (EDBA). Ethanol was used as a solvent. The experimental groups were named sequentially according to the monomeric content (DDDMA/UDMA) S40/40 (40/40), S50/30 (50/30), S60/20 (60/20), S70/10 (70/10) and S80/0 (80/0). Data were analyzed separately by one-way ANOVA, followed by Tukey's test (p<0.05). The values of DC ranged from 94.59% (S40/40) to 54.02% (S80/10). BIS showed the highest WS value (p<0.05) and S40/40, S50/30, S60/20 and S80/0 showed the lowest WS values of all tested sealants. WSB values ranged from 7.88 µg/mm3 (BIS) to 13.27 µg/mm3 (S70/10). The highest ΔE value was 11.05±2.88 for BIS and the highest μSBS value was found for S60/20. No significant difference was observed in bond strength between sealants and bovine enamel after thermocycling. Adding DDDMA to the composition of surface sealants can improve its performance, once the monomer increased the degree of conversion and the color stability.
Subject(s)


Full text: Available Index: LILACS (Americas) Main subject: Polymethacrylic Acids / Polyurethanes / Composite Resins / Methacrylates Limits: Animals / Humans Language: English Journal: Braz. oral res. (Online) Journal subject: Dentistry Year: 2018 Type: Article Affiliation country: Brazil Institution/Affiliation country: Universidade Estadual de Campinas/BR / Universidade Estadual do Amazonas/BR / Universidade de São Paulo/BR

Similar

MEDLINE

...
LILACS

LIS


Full text: Available Index: LILACS (Americas) Main subject: Polymethacrylic Acids / Polyurethanes / Composite Resins / Methacrylates Limits: Animals / Humans Language: English Journal: Braz. oral res. (Online) Journal subject: Dentistry Year: 2018 Type: Article Affiliation country: Brazil Institution/Affiliation country: Universidade Estadual de Campinas/BR / Universidade Estadual do Amazonas/BR / Universidade de São Paulo/BR