Mechanical properties of bulk-fill versus nanohybrid composites: effect of layer thickness and application protocols
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Brazilian Dental Science |
Texto Completo: | https://ojs.ict.unesp.br/index.php/cob/article/view/1719 |
Resumo: | Objective: The objective of this study was to evaluate the compressive strength, flexural strength and flexural modulus of high-viscosity, low-viscosity bulk-fill, and conventional nano-hybrid resin composite materials alone and when covered with nano-hybrid resin composite at different incremental thicknesses on the bulk-fill composites. Materials and Methods: Specimens (N=60) were fabricated from the following materials or their combinations (n=10 per group): a) conventional nano-hybrid composite Z550 (FK), b) high-viscosity bulk-fill composite (Tetric N Ceram-TBF), c) low-viscosity bulk-fill composite SDR (SDR), d) Sonicfill (SF), e) SDR (2 mm)+FK (2 mm), f) SDR (4 mm)+FK (4 mm). After 24 h water storage, compressive strength was measured in a universal testing machine (1 mm/min). Additional specimens (N=40) (25x2x2 mm3) were made from FK, TBF, SDR and SF in order to determine the flexural strength and the flexural modulus, (n=10) and subjected to three-point bending test (0.5 mm/min). Data were analyzed using one-way ANOVA and Tamhane’s T2 post-hoc tests (p<0.05). Results: The mean compressive strength (MPa) of the nano-hybrid composite (FK) was significantly higher (223.8±41.3) than those of the other groups (123±27 - 170±24) (p<0.001). SDR (4 mm)+FK (2 mm) showed significantly higher compressive strength than when covered with 4 mm (143±30) or when used alone (146±11) (p<0.05). The mean flexural strength (159±31) and the flexural modulus of FK (34±7) was significantly higher than that of the high- or low-viscosity bulk-fill composites (p<0.001). The mean flexural strength of SF (132±20) was significantly higher compared to TBF (95±25) (p<0.05). Conclusion: Bulk-fill resin composites demonstrated poorer mechanical properties compared to nano-hybrid composite but similar to that of SF. Increasing the thickness of low-viscosity bulk-fill composite (SDR) from 2 to 4 mm underneath the nano-hybrid composite (FK) can improve the mechanical properties of the bulk-fill composites. KeywordsBulk-fill composites; Compressive strength; Flexural modulus; Flexural strength; Mechanical properties. |
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oai:ojs.pkp.sfu.ca:article/1719 |
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UNESP-20 |
network_name_str |
Brazilian Dental Science |
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Mechanical properties of bulk-fill versus nanohybrid composites: effect of layer thickness and application protocolsObjective: The objective of this study was to evaluate the compressive strength, flexural strength and flexural modulus of high-viscosity, low-viscosity bulk-fill, and conventional nano-hybrid resin composite materials alone and when covered with nano-hybrid resin composite at different incremental thicknesses on the bulk-fill composites. Materials and Methods: Specimens (N=60) were fabricated from the following materials or their combinations (n=10 per group): a) conventional nano-hybrid composite Z550 (FK), b) high-viscosity bulk-fill composite (Tetric N Ceram-TBF), c) low-viscosity bulk-fill composite SDR (SDR), d) Sonicfill (SF), e) SDR (2 mm)+FK (2 mm), f) SDR (4 mm)+FK (4 mm). After 24 h water storage, compressive strength was measured in a universal testing machine (1 mm/min). Additional specimens (N=40) (25x2x2 mm3) were made from FK, TBF, SDR and SF in order to determine the flexural strength and the flexural modulus, (n=10) and subjected to three-point bending test (0.5 mm/min). Data were analyzed using one-way ANOVA and Tamhane’s T2 post-hoc tests (p<0.05). Results: The mean compressive strength (MPa) of the nano-hybrid composite (FK) was significantly higher (223.8±41.3) than those of the other groups (123±27 - 170±24) (p<0.001). SDR (4 mm)+FK (2 mm) showed significantly higher compressive strength than when covered with 4 mm (143±30) or when used alone (146±11) (p<0.05). The mean flexural strength (159±31) and the flexural modulus of FK (34±7) was significantly higher than that of the high- or low-viscosity bulk-fill composites (p<0.001). The mean flexural strength of SF (132±20) was significantly higher compared to TBF (95±25) (p<0.05). Conclusion: Bulk-fill resin composites demonstrated poorer mechanical properties compared to nano-hybrid composite but similar to that of SF. Increasing the thickness of low-viscosity bulk-fill composite (SDR) from 2 to 4 mm underneath the nano-hybrid composite (FK) can improve the mechanical properties of the bulk-fill composites. KeywordsBulk-fill composites; Compressive strength; Flexural modulus; Flexural strength; Mechanical properties.Institute of Science and Technology of São José dos Campos2019-04-30info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfapplication/vnd.openxmlformats-officedocument.wordprocessingml.documentapplication/vnd.openxmlformats-officedocument.wordprocessingml.documenthttps://ojs.ict.unesp.br/index.php/cob/article/view/171910.14295/bds.2019.v22i2.1719Brazilian Dental Science; Vol. 22 No. 2 (2019): Apr. - Jun. / 2019 - Published April 2019; 234-242Brazilian Dental Science; v. 22 n. 2 (2019): Apr. - Jun. / 2019 - Published April 2019; 234-2422178-6011reponame:Brazilian Dental Scienceinstname:Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP)instacron:UNESPenghttps://ojs.ict.unesp.br/index.php/cob/article/view/1719/1363https://ojs.ict.unesp.br/index.php/cob/article/view/1719/3633https://ojs.ict.unesp.br/index.php/cob/article/view/1719/3634Copyright (c) 2019 Brazilian Dental Scienceinfo:eu-repo/semantics/openAccessCilingir, AylinOzsoy, AlevMert Eren, MeltemBehram, OzgeDikmen, BeninOzcan, Mutlu2020-01-28T11:57:54Zoai:ojs.pkp.sfu.ca:article/1719Revistahttp://bds.ict.unesp.br/PUBhttp://ojs.fosjc.unesp.br/index.php/index/oaisergio@fosjc.unesp.br||sergio@fosjc.unesp.br2178-60112178-6011opendoar:2022-11-08T16:30:21.601754Brazilian Dental Science - Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP)true |
dc.title.none.fl_str_mv |
Mechanical properties of bulk-fill versus nanohybrid composites: effect of layer thickness and application protocols |
title |
Mechanical properties of bulk-fill versus nanohybrid composites: effect of layer thickness and application protocols |
spellingShingle |
Mechanical properties of bulk-fill versus nanohybrid composites: effect of layer thickness and application protocols Cilingir, Aylin |
title_short |
Mechanical properties of bulk-fill versus nanohybrid composites: effect of layer thickness and application protocols |
title_full |
Mechanical properties of bulk-fill versus nanohybrid composites: effect of layer thickness and application protocols |
title_fullStr |
Mechanical properties of bulk-fill versus nanohybrid composites: effect of layer thickness and application protocols |
title_full_unstemmed |
Mechanical properties of bulk-fill versus nanohybrid composites: effect of layer thickness and application protocols |
title_sort |
Mechanical properties of bulk-fill versus nanohybrid composites: effect of layer thickness and application protocols |
author |
Cilingir, Aylin |
author_facet |
Cilingir, Aylin Ozsoy, Alev Mert Eren, Meltem Behram, Ozge Dikmen, Benin Ozcan, Mutlu |
author_role |
author |
author2 |
Ozsoy, Alev Mert Eren, Meltem Behram, Ozge Dikmen, Benin Ozcan, Mutlu |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Cilingir, Aylin Ozsoy, Alev Mert Eren, Meltem Behram, Ozge Dikmen, Benin Ozcan, Mutlu |
description |
Objective: The objective of this study was to evaluate the compressive strength, flexural strength and flexural modulus of high-viscosity, low-viscosity bulk-fill, and conventional nano-hybrid resin composite materials alone and when covered with nano-hybrid resin composite at different incremental thicknesses on the bulk-fill composites. Materials and Methods: Specimens (N=60) were fabricated from the following materials or their combinations (n=10 per group): a) conventional nano-hybrid composite Z550 (FK), b) high-viscosity bulk-fill composite (Tetric N Ceram-TBF), c) low-viscosity bulk-fill composite SDR (SDR), d) Sonicfill (SF), e) SDR (2 mm)+FK (2 mm), f) SDR (4 mm)+FK (4 mm). After 24 h water storage, compressive strength was measured in a universal testing machine (1 mm/min). Additional specimens (N=40) (25x2x2 mm3) were made from FK, TBF, SDR and SF in order to determine the flexural strength and the flexural modulus, (n=10) and subjected to three-point bending test (0.5 mm/min). Data were analyzed using one-way ANOVA and Tamhane’s T2 post-hoc tests (p<0.05). Results: The mean compressive strength (MPa) of the nano-hybrid composite (FK) was significantly higher (223.8±41.3) than those of the other groups (123±27 - 170±24) (p<0.001). SDR (4 mm)+FK (2 mm) showed significantly higher compressive strength than when covered with 4 mm (143±30) or when used alone (146±11) (p<0.05). The mean flexural strength (159±31) and the flexural modulus of FK (34±7) was significantly higher than that of the high- or low-viscosity bulk-fill composites (p<0.001). The mean flexural strength of SF (132±20) was significantly higher compared to TBF (95±25) (p<0.05). Conclusion: Bulk-fill resin composites demonstrated poorer mechanical properties compared to nano-hybrid composite but similar to that of SF. Increasing the thickness of low-viscosity bulk-fill composite (SDR) from 2 to 4 mm underneath the nano-hybrid composite (FK) can improve the mechanical properties of the bulk-fill composites. KeywordsBulk-fill composites; Compressive strength; Flexural modulus; Flexural strength; Mechanical properties. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-04-30 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://ojs.ict.unesp.br/index.php/cob/article/view/1719 10.14295/bds.2019.v22i2.1719 |
url |
https://ojs.ict.unesp.br/index.php/cob/article/view/1719 |
identifier_str_mv |
10.14295/bds.2019.v22i2.1719 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://ojs.ict.unesp.br/index.php/cob/article/view/1719/1363 https://ojs.ict.unesp.br/index.php/cob/article/view/1719/3633 https://ojs.ict.unesp.br/index.php/cob/article/view/1719/3634 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2019 Brazilian Dental Science info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2019 Brazilian Dental Science |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf application/vnd.openxmlformats-officedocument.wordprocessingml.document application/vnd.openxmlformats-officedocument.wordprocessingml.document |
dc.publisher.none.fl_str_mv |
Institute of Science and Technology of São José dos Campos |
publisher.none.fl_str_mv |
Institute of Science and Technology of São José dos Campos |
dc.source.none.fl_str_mv |
Brazilian Dental Science; Vol. 22 No. 2 (2019): Apr. - Jun. / 2019 - Published April 2019; 234-242 Brazilian Dental Science; v. 22 n. 2 (2019): Apr. - Jun. / 2019 - Published April 2019; 234-242 2178-6011 reponame:Brazilian Dental Science instname:Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Brazilian Dental Science |
collection |
Brazilian Dental Science |
repository.name.fl_str_mv |
Brazilian Dental Science - Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP) |
repository.mail.fl_str_mv |
sergio@fosjc.unesp.br||sergio@fosjc.unesp.br |
_version_ |
1788346900803485696 |