Abrasion resistance of composites polymerized by light-emitting diodes (LED) and halogen light-curing units

Detalhes bibliográficos
Autor(a) principal: Martinelli,Janisse
Data de Publicação: 2006
Outros Autores: Pires-de-Souza,Fernanda de Carvalho Panzeri, Casemiro,Luciana Assirati, Tirapelli,Camila, Panzer,Heitor
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Brazilian Dental Journal
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-64402006000100007
Resumo: This study compared the abrasion resistance of direct composite resins cured by light-emitting diodes (LED) and halogen light-curing units. Twenty specimens (12 mm in diameter; 1.0 mm thick) of each composite resin [TPH (Dentsply); Definite (Degussa); Charisma (Heraus Kulzer)] were prepared using a polytetrafluoroethylene matrix. Ten specimens per material were cured with the LED source and 10 with the halogen lamp for 40 s. The resin discs were polished, submitted to initial surface roughness reading (Ra initial - mum) in a roughness tester and stored in water at 37°C for 15 days. The specimens were weighed (M1) and submitted to simulated toothbrushing using slurry of water and dentifrice with high abrasiveness. After 100 minutes in the toothbrushing simulator, the specimens were cleaned, submitted to a new surface roughness reading (Ra final - mum) and reweighed (M2). Mass loss was determined as the difference between M1 and M2. Data were recorded and analyzed statistically by one-way ANOVA and Tukey Test at 5% significance level. The composite resin with greater size of inorganic fillers (TPH) showed the lowest mass loss and surface roughness means, indicating a higher resistance to toothbrush abrasion (p<0.05). Definite cured with LED presented the least resistance to toothbrush abrasion, showing the highest means of surface roughness and mass loss (p<0.05). The LED source did not show the same effectiveness as the halogen lamp for polymerizing this specific composite resin. When the composite resins were cured a halogen LCU, no statistically significant difference was observed among the materials (p>0.05). It may be concluded that the type of light-curing unit and the resin composition seemed to interfere with the materials' resistance to abrasion.
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spelling Abrasion resistance of composites polymerized by light-emitting diodes (LED) and halogen light-curing unitsabrasion resistancecomposite resinlight-curingLEDhalogen lampThis study compared the abrasion resistance of direct composite resins cured by light-emitting diodes (LED) and halogen light-curing units. Twenty specimens (12 mm in diameter; 1.0 mm thick) of each composite resin [TPH (Dentsply); Definite (Degussa); Charisma (Heraus Kulzer)] were prepared using a polytetrafluoroethylene matrix. Ten specimens per material were cured with the LED source and 10 with the halogen lamp for 40 s. The resin discs were polished, submitted to initial surface roughness reading (Ra initial - mum) in a roughness tester and stored in water at 37°C for 15 days. The specimens were weighed (M1) and submitted to simulated toothbrushing using slurry of water and dentifrice with high abrasiveness. After 100 minutes in the toothbrushing simulator, the specimens were cleaned, submitted to a new surface roughness reading (Ra final - mum) and reweighed (M2). Mass loss was determined as the difference between M1 and M2. Data were recorded and analyzed statistically by one-way ANOVA and Tukey Test at 5% significance level. The composite resin with greater size of inorganic fillers (TPH) showed the lowest mass loss and surface roughness means, indicating a higher resistance to toothbrush abrasion (p<0.05). Definite cured with LED presented the least resistance to toothbrush abrasion, showing the highest means of surface roughness and mass loss (p<0.05). The LED source did not show the same effectiveness as the halogen lamp for polymerizing this specific composite resin. When the composite resins were cured a halogen LCU, no statistically significant difference was observed among the materials (p>0.05). It may be concluded that the type of light-curing unit and the resin composition seemed to interfere with the materials' resistance to abrasion.Fundação Odontológica de Ribeirão Preto2006-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-64402006000100007Brazilian Dental Journal v.17 n.1 2006reponame:Brazilian Dental Journalinstname:Fundação Odontológica de Ribeirão Preto (FUNORP)instacron:FUNORP10.1590/S0103-64402006000100007info:eu-repo/semantics/openAccessMartinelli,JanissePires-de-Souza,Fernanda de Carvalho PanzeriCasemiro,Luciana AssiratiTirapelli,CamilaPanzer,Heitoreng2006-05-02T00:00:00Zoai:scielo:S0103-64402006000100007Revistahttps://www.scielo.br/j/bdj/https://old.scielo.br/oai/scielo-oai.phpbdj@forp.usp.br||sergio@fosjc.unesp.br1806-47600103-6440opendoar:2006-05-02T00:00Brazilian Dental Journal - Fundação Odontológica de Ribeirão Preto (FUNORP)false
dc.title.none.fl_str_mv Abrasion resistance of composites polymerized by light-emitting diodes (LED) and halogen light-curing units
title Abrasion resistance of composites polymerized by light-emitting diodes (LED) and halogen light-curing units
spellingShingle Abrasion resistance of composites polymerized by light-emitting diodes (LED) and halogen light-curing units
Martinelli,Janisse
abrasion resistance
composite resin
light-curing
LED
halogen lamp
title_short Abrasion resistance of composites polymerized by light-emitting diodes (LED) and halogen light-curing units
title_full Abrasion resistance of composites polymerized by light-emitting diodes (LED) and halogen light-curing units
title_fullStr Abrasion resistance of composites polymerized by light-emitting diodes (LED) and halogen light-curing units
title_full_unstemmed Abrasion resistance of composites polymerized by light-emitting diodes (LED) and halogen light-curing units
title_sort Abrasion resistance of composites polymerized by light-emitting diodes (LED) and halogen light-curing units
author Martinelli,Janisse
author_facet Martinelli,Janisse
Pires-de-Souza,Fernanda de Carvalho Panzeri
Casemiro,Luciana Assirati
Tirapelli,Camila
Panzer,Heitor
author_role author
author2 Pires-de-Souza,Fernanda de Carvalho Panzeri
Casemiro,Luciana Assirati
Tirapelli,Camila
Panzer,Heitor
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Martinelli,Janisse
Pires-de-Souza,Fernanda de Carvalho Panzeri
Casemiro,Luciana Assirati
Tirapelli,Camila
Panzer,Heitor
dc.subject.por.fl_str_mv abrasion resistance
composite resin
light-curing
LED
halogen lamp
topic abrasion resistance
composite resin
light-curing
LED
halogen lamp
description This study compared the abrasion resistance of direct composite resins cured by light-emitting diodes (LED) and halogen light-curing units. Twenty specimens (12 mm in diameter; 1.0 mm thick) of each composite resin [TPH (Dentsply); Definite (Degussa); Charisma (Heraus Kulzer)] were prepared using a polytetrafluoroethylene matrix. Ten specimens per material were cured with the LED source and 10 with the halogen lamp for 40 s. The resin discs were polished, submitted to initial surface roughness reading (Ra initial - mum) in a roughness tester and stored in water at 37°C for 15 days. The specimens were weighed (M1) and submitted to simulated toothbrushing using slurry of water and dentifrice with high abrasiveness. After 100 minutes in the toothbrushing simulator, the specimens were cleaned, submitted to a new surface roughness reading (Ra final - mum) and reweighed (M2). Mass loss was determined as the difference between M1 and M2. Data were recorded and analyzed statistically by one-way ANOVA and Tukey Test at 5% significance level. The composite resin with greater size of inorganic fillers (TPH) showed the lowest mass loss and surface roughness means, indicating a higher resistance to toothbrush abrasion (p<0.05). Definite cured with LED presented the least resistance to toothbrush abrasion, showing the highest means of surface roughness and mass loss (p<0.05). The LED source did not show the same effectiveness as the halogen lamp for polymerizing this specific composite resin. When the composite resins were cured a halogen LCU, no statistically significant difference was observed among the materials (p>0.05). It may be concluded that the type of light-curing unit and the resin composition seemed to interfere with the materials' resistance to abrasion.
publishDate 2006
dc.date.none.fl_str_mv 2006-01-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-64402006000100007
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-64402006000100007
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0103-64402006000100007
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Fundação Odontológica de Ribeirão Preto
publisher.none.fl_str_mv Fundação Odontológica de Ribeirão Preto
dc.source.none.fl_str_mv Brazilian Dental Journal v.17 n.1 2006
reponame:Brazilian Dental Journal
instname:Fundação Odontológica de Ribeirão Preto (FUNORP)
instacron:FUNORP
instname_str Fundação Odontológica de Ribeirão Preto (FUNORP)
instacron_str FUNORP
institution FUNORP
reponame_str Brazilian Dental Journal
collection Brazilian Dental Journal
repository.name.fl_str_mv Brazilian Dental Journal - Fundação Odontológica de Ribeirão Preto (FUNORP)
repository.mail.fl_str_mv bdj@forp.usp.br||sergio@fosjc.unesp.br
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