Effect of dental bleaching on the microhardness and surface roughness of sealed composite resins
ObjectivesThe aim of this in vitro study was to evaluate the microhardness and surface roughness of composite resins before and after tooth bleaching procedures.Materials and MethodsSixty specimens were prepared of each composite resin (Filtek Supreme XT and Opallis), and BisCover LV surface sealant...
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Korean Academy of Conservative Dentistry
2020-02-01
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| Series: | Restorative Dentistry & Endodontics |
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| Online Access: | http://rde.ac/upload/pdf/rde-45-e12.pdf |
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| author | Renan Aparecido Fernandes Henrico Badaoui Strazzi-Sahyon Thaís Yumi Umeda Suzuki André Luiz Fraga Briso Paulo Henrique dos Santos |
| author_facet | Renan Aparecido Fernandes Henrico Badaoui Strazzi-Sahyon Thaís Yumi Umeda Suzuki André Luiz Fraga Briso Paulo Henrique dos Santos |
| author_sort | Renan Aparecido Fernandes |
| collection | DOAJ |
| description | ObjectivesThe aim of this in vitro study was to evaluate the microhardness and surface roughness of composite resins before and after tooth bleaching procedures.Materials and MethodsSixty specimens were prepared of each composite resin (Filtek Supreme XT and Opallis), and BisCover LV surface sealant was applied to half of the specimens. Thirty enamel samples were obtained from the buccal and lingual surfaces of human molars for use as the control group. The surface roughness and microhardness were measured before and after bleaching procedures with 35% hydrogen peroxide or 16% carbamide (n = 10). Data were analyzed using 1-way analysis of variance and the Fisher test (α = 0.05).ResultsNeither hydrogen peroxide nor carbamide peroxide treatment significantly altered the hardness of the composite resins, regardless of surface sealant application; however, both treatments significantly decreased the hardness of the tooth samples (p < 0.05). The bleaching did not cause any change in surface roughness, with the exception of the unsealed Opallis composite resin and dental enamel, both of which displayed an increase in surface roughness after bleaching with carbamide peroxide (p < 0.05).ConclusionsThe microhardness and surface roughness of enamel and Opallis composite resin were influenced by bleaching procedures. |
| format | Article |
| id | doaj-art-d4646e39bfbf4a47854823f645ec5e76 |
| institution | Kabale University |
| issn | 2234-7658 2234-7666 |
| language | English |
| publishDate | 2020-02-01 |
| publisher | Korean Academy of Conservative Dentistry |
| record_format | Article |
| series | Restorative Dentistry & Endodontics |
| spelling | doaj-art-d4646e39bfbf4a47854823f645ec5e762025-08-20T03:29:35ZengKorean Academy of Conservative DentistryRestorative Dentistry & Endodontics2234-76582234-76662020-02-01451e1210.5395/rde.2020.45.e12893Effect of dental bleaching on the microhardness and surface roughness of sealed composite resinsRenan Aparecido Fernandes0Henrico Badaoui Strazzi-Sahyon1Thaís Yumi Umeda Suzuki2André Luiz Fraga Briso3Paulo Henrique dos Santos4Department of Dental Materials and Prosthodontics, School of Dentistry of Araçatuba, São Paulo State University, Araçatuba, SP, BrazilDepartment of Dental Materials and Prosthodontics, School of Dentistry of Araçatuba, São Paulo State University, Araçatuba, SP, BrazilDepartment of Restorative Dentistry, Federal University of Minas Gerais, Belo Horizonte, MG, BrazilDepartment of Restorative Dentistry, School of Dentistry of Araçatuba, São Paulo State University, Araçatuba, SP, BrazilDepartment of Dental Materials and Prosthodontics, School of Dentistry of Araçatuba, São Paulo State University, Araçatuba, SP, BrazilObjectivesThe aim of this in vitro study was to evaluate the microhardness and surface roughness of composite resins before and after tooth bleaching procedures.Materials and MethodsSixty specimens were prepared of each composite resin (Filtek Supreme XT and Opallis), and BisCover LV surface sealant was applied to half of the specimens. Thirty enamel samples were obtained from the buccal and lingual surfaces of human molars for use as the control group. The surface roughness and microhardness were measured before and after bleaching procedures with 35% hydrogen peroxide or 16% carbamide (n = 10). Data were analyzed using 1-way analysis of variance and the Fisher test (α = 0.05).ResultsNeither hydrogen peroxide nor carbamide peroxide treatment significantly altered the hardness of the composite resins, regardless of surface sealant application; however, both treatments significantly decreased the hardness of the tooth samples (p < 0.05). The bleaching did not cause any change in surface roughness, with the exception of the unsealed Opallis composite resin and dental enamel, both of which displayed an increase in surface roughness after bleaching with carbamide peroxide (p < 0.05).ConclusionsThe microhardness and surface roughness of enamel and Opallis composite resin were influenced by bleaching procedures.http://rde.ac/upload/pdf/rde-45-e12.pdfcomposite resinshardnessroughnesstooth bleaching |
| spellingShingle | Renan Aparecido Fernandes Henrico Badaoui Strazzi-Sahyon Thaís Yumi Umeda Suzuki André Luiz Fraga Briso Paulo Henrique dos Santos Effect of dental bleaching on the microhardness and surface roughness of sealed composite resins Restorative Dentistry & Endodontics composite resins hardness roughness tooth bleaching |
| title | Effect of dental bleaching on the microhardness and surface roughness of sealed composite resins |
| title_full | Effect of dental bleaching on the microhardness and surface roughness of sealed composite resins |
| title_fullStr | Effect of dental bleaching on the microhardness and surface roughness of sealed composite resins |
| title_full_unstemmed | Effect of dental bleaching on the microhardness and surface roughness of sealed composite resins |
| title_short | Effect of dental bleaching on the microhardness and surface roughness of sealed composite resins |
| title_sort | effect of dental bleaching on the microhardness and surface roughness of sealed composite resins |
| topic | composite resins hardness roughness tooth bleaching |
| url | http://rde.ac/upload/pdf/rde-45-e12.pdf |
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