Effect of nanoscale particles incorporation on microhardness of polymers for oral prosthesis
Objectives: This study aimed to evaluate the influence of the incorporation of pigments on surface hardness of four acrylic resins subjected to thermocycling and analyze their elemental composition using energy dispersive X-ray spectroscopy (EDS). Materials and Methods: Twenty-one discs of each resi...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Wolters Kluwer Medknow Publications
2016-01-01
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| Series: | Contemporary Clinical Dentistry |
| Subjects: | |
| Online Access: | http://www.contempclindent.org/article.asp?issn=0976-237X;year=2016;volume=7;issue=3;spage=307;epage=311;aulast=Goiato |
| _version_ | 1819130038085222400 |
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| author | Marcelo Coelho Goiato Bruna Carolina Rossatti Zuccolotti Amalia Moreno Aljomar José Vechiato Filho Marcela Borghi Paulini Daniela Micheline Dos Santos |
| author_facet | Marcelo Coelho Goiato Bruna Carolina Rossatti Zuccolotti Amalia Moreno Aljomar José Vechiato Filho Marcela Borghi Paulini Daniela Micheline Dos Santos |
| author_sort | Marcelo Coelho Goiato |
| collection | DOAJ |
| description | Objectives: This study aimed to evaluate the influence of the incorporation of pigments on surface hardness of four acrylic resins subjected to thermocycling and analyze their elemental composition using energy dispersive X-ray spectroscopy (EDS). Materials and Methods: Twenty-one discs of each resin were fabricated, whereas seven had no additive, seven had 3% of nanoscale pigments and last seven had 10% of them. The percentage was obtained by measuring the total weight of each resin disc. Besides, seven discs composed by only nanoscale pigments were also fabricated, totalizing 91 discs. The pigment was weighed by using an analytical balance (BEL Analytical Equipment, SP, Brazil). The surface hardness was measured through a hardness tester machine before and after thermocycling (5-55°C, for 2000 cycles). Data were analyzed by ANOVA and Tukey′s test (P < 0.05). The chemical composition of the discs composed only by nanoscale pigments was analyzed with EDS test. Results: Hardness of all resins decreased after thermocycling. The lowest values were observed on the discs with 3% of nanoscale pigments and discs fabricated only with them. EDS showed the presence of titanium dioxide. Conclusion: Discs with 7% of pigments (after thermocycling) showed higher hardness values. |
| first_indexed | 2024-12-22T08:53:15Z |
| format | Article |
| id | doaj.art-f6289a5a3b974e149371dc8b9eacad6e |
| institution | Directory Open Access Journal |
| issn | 0976-237X 0976-2361 |
| language | English |
| last_indexed | 2024-12-22T08:53:15Z |
| publishDate | 2016-01-01 |
| publisher | Wolters Kluwer Medknow Publications |
| record_format | Article |
| series | Contemporary Clinical Dentistry |
| spelling | doaj.art-f6289a5a3b974e149371dc8b9eacad6e2022-12-21T18:31:55ZengWolters Kluwer Medknow PublicationsContemporary Clinical Dentistry0976-237X0976-23612016-01-017330731110.4103/0976-237X.188543Effect of nanoscale particles incorporation on microhardness of polymers for oral prosthesisMarcelo Coelho GoiatoBruna Carolina Rossatti ZuccolottiAmalia MorenoAljomar José Vechiato FilhoMarcela Borghi PauliniDaniela Micheline Dos SantosObjectives: This study aimed to evaluate the influence of the incorporation of pigments on surface hardness of four acrylic resins subjected to thermocycling and analyze their elemental composition using energy dispersive X-ray spectroscopy (EDS). Materials and Methods: Twenty-one discs of each resin were fabricated, whereas seven had no additive, seven had 3% of nanoscale pigments and last seven had 10% of them. The percentage was obtained by measuring the total weight of each resin disc. Besides, seven discs composed by only nanoscale pigments were also fabricated, totalizing 91 discs. The pigment was weighed by using an analytical balance (BEL Analytical Equipment, SP, Brazil). The surface hardness was measured through a hardness tester machine before and after thermocycling (5-55°C, for 2000 cycles). Data were analyzed by ANOVA and Tukey′s test (P < 0.05). The chemical composition of the discs composed only by nanoscale pigments was analyzed with EDS test. Results: Hardness of all resins decreased after thermocycling. The lowest values were observed on the discs with 3% of nanoscale pigments and discs fabricated only with them. EDS showed the presence of titanium dioxide. Conclusion: Discs with 7% of pigments (after thermocycling) showed higher hardness values.http://www.contempclindent.org/article.asp?issn=0976-237X;year=2016;volume=7;issue=3;spage=307;epage=311;aulast=GoiatoAcrylic resinsdenture basesgeriatrics |
| spellingShingle | Marcelo Coelho Goiato Bruna Carolina Rossatti Zuccolotti Amalia Moreno Aljomar José Vechiato Filho Marcela Borghi Paulini Daniela Micheline Dos Santos Effect of nanoscale particles incorporation on microhardness of polymers for oral prosthesis Contemporary Clinical Dentistry Acrylic resins denture bases geriatrics |
| title | Effect of nanoscale particles incorporation on microhardness of polymers for oral prosthesis |
| title_full | Effect of nanoscale particles incorporation on microhardness of polymers for oral prosthesis |
| title_fullStr | Effect of nanoscale particles incorporation on microhardness of polymers for oral prosthesis |
| title_full_unstemmed | Effect of nanoscale particles incorporation on microhardness of polymers for oral prosthesis |
| title_short | Effect of nanoscale particles incorporation on microhardness of polymers for oral prosthesis |
| title_sort | effect of nanoscale particles incorporation on microhardness of polymers for oral prosthesis |
| topic | Acrylic resins denture bases geriatrics |
| url | http://www.contempclindent.org/article.asp?issn=0976-237X;year=2016;volume=7;issue=3;spage=307;epage=311;aulast=Goiato |
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