Effect of a desensitizing dentifrice on the bond strength of different adhesive systems

Effect of a desensitizing dentifrice on the bond strength of different adhesive systems

AIM: This in vitro study evaluated the effect of using a dental hypersensitivity treatment on the bond strength to dentin of etch-and-rinse and self-etching simplified adhesive systems. METHODS: 40 healthy molars were used. The crowns of teeth were removed at the dentinoenamel junction, and remaining roots were sectioned in the mesiodistal direction along their long axis, separating the buccal and lingual/palatal halves. The segments obtained were ground, keeping the buccal or lingual/palatal face turned downwards in order to flatten the surface and produce a standardized smear layer. Prepared specimens were randomly distributed into 4 groups (n=10), according to the combination of surface treatment with the desensitizing dentifrice Colgate Sensitive Pro-Relief (Colgate Palmolive®) (test group - with dentifrice and control group - without dentifrice) and type of simplified bonding agent (etch-and-rinse and self-etching agents). Resin composite blocks were fabricated on the dentin surfaces, after application of bonding agents, and specimens were sectioned into rectangular stick-shaped specimens with cross-sectional area of approximately 0.8mm². For microtensile bond strength tests, 4 sticks were randomly selected from the central region of specimens, and fixed to a universal test machine. Data were analyzed statistically by the Mann-Whitney U test (a=0.05). RESULTS: The bond strength obtained in the group without desensitizer (control) + etch-and-rinse agent was significantly higher compared with the other groups. Under both experimental conditions, the self-etching agent showed weak bond strength to dentin. CONCLUSIONS: Change in the dentin substrate by obliteration of tubules in the process of relieving dentinal sensitivity could reduce the bond strength of simplified etch-and-rinse and self-etching bonding agents.

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Main Authors: Cavalcanti,Andrea Nóbrega, Souza,Evangelista Santos de, Lopes,Gabriela dos Santos, Freitas,Anderson Pinheiro de, Araújo,Roberto Paulo Correia de, Mathias,Paula
Format: Digital revista
Language:English
Published: Faculdade de Odontologia de Piracicaba - UNICAMP 2013
Online Access:http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1677-32252013000200015
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spelling oai:scielo:S1677-322520130002000152013-07-19Effect of a desensitizing dentifrice on the bond strength of different adhesive systemsCavalcanti,Andrea NóbregaSouza,Evangelista Santos deLopes,Gabriela dos SantosFreitas,Anderson Pinheiro deAraújo,Roberto Paulo Correia deMathias,Paula dentin dentin sensitivity adhesive systems AIM: This in vitro study evaluated the effect of using a dental hypersensitivity treatment on the bond strength to dentin of etch-and-rinse and self-etching simplified adhesive systems. METHODS: 40 healthy molars were used. The crowns of teeth were removed at the dentinoenamel junction, and remaining roots were sectioned in the mesiodistal direction along their long axis, separating the buccal and lingual/palatal halves. The segments obtained were ground, keeping the buccal or lingual/palatal face turned downwards in order to flatten the surface and produce a standardized smear layer. Prepared specimens were randomly distributed into 4 groups (n=10), according to the combination of surface treatment with the desensitizing dentifrice Colgate Sensitive Pro-Relief (Colgate Palmolive®) (test group - with dentifrice and control group - without dentifrice) and type of simplified bonding agent (etch-and-rinse and self-etching agents). Resin composite blocks were fabricated on the dentin surfaces, after application of bonding agents, and specimens were sectioned into rectangular stick-shaped specimens with cross-sectional area of approximately 0.8mm². For microtensile bond strength tests, 4 sticks were randomly selected from the central region of specimens, and fixed to a universal test machine. Data were analyzed statistically by the Mann-Whitney U test (a=0.05). RESULTS: The bond strength obtained in the group without desensitizer (control) + etch-and-rinse agent was significantly higher compared with the other groups. Under both experimental conditions, the self-etching agent showed weak bond strength to dentin. CONCLUSIONS: Change in the dentin substrate by obliteration of tubules in the process of relieving dentinal sensitivity could reduce the bond strength of simplified etch-and-rinse and self-etching bonding agents.info:eu-repo/semantics/openAccessFaculdade de Odontologia de Piracicaba - UNICAMPBrazilian Journal of Oral Sciences v.12 n.2 20132013-06-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1677-32252013000200015en10.1590/S1677-32252013000200015
institution SCIELO
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country Brasil
countrycode BR
component Revista
access En linea
databasecode rev-scielo-br
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region America del Sur
libraryname SciELO
language English
format Digital
author Cavalcanti,Andrea Nóbrega
Souza,Evangelista Santos de
Lopes,Gabriela dos Santos
Freitas,Anderson Pinheiro de
Araújo,Roberto Paulo Correia de
Mathias,Paula
spellingShingle Cavalcanti,Andrea Nóbrega
Souza,Evangelista Santos de
Lopes,Gabriela dos Santos
Freitas,Anderson Pinheiro de
Araújo,Roberto Paulo Correia de
Mathias,Paula
Effect of a desensitizing dentifrice on the bond strength of different adhesive systems
author_facet Cavalcanti,Andrea Nóbrega
Souza,Evangelista Santos de
Lopes,Gabriela dos Santos
Freitas,Anderson Pinheiro de
Araújo,Roberto Paulo Correia de
Mathias,Paula
author_sort Cavalcanti,Andrea Nóbrega
title Effect of a desensitizing dentifrice on the bond strength of different adhesive systems
title_short Effect of a desensitizing dentifrice on the bond strength of different adhesive systems
title_full Effect of a desensitizing dentifrice on the bond strength of different adhesive systems
title_fullStr Effect of a desensitizing dentifrice on the bond strength of different adhesive systems
title_full_unstemmed Effect of a desensitizing dentifrice on the bond strength of different adhesive systems
title_sort effect of a desensitizing dentifrice on the bond strength of different adhesive systems
description AIM: This in vitro study evaluated the effect of using a dental hypersensitivity treatment on the bond strength to dentin of etch-and-rinse and self-etching simplified adhesive systems. METHODS: 40 healthy molars were used. The crowns of teeth were removed at the dentinoenamel junction, and remaining roots were sectioned in the mesiodistal direction along their long axis, separating the buccal and lingual/palatal halves. The segments obtained were ground, keeping the buccal or lingual/palatal face turned downwards in order to flatten the surface and produce a standardized smear layer. Prepared specimens were randomly distributed into 4 groups (n=10), according to the combination of surface treatment with the desensitizing dentifrice Colgate Sensitive Pro-Relief (Colgate Palmolive®) (test group - with dentifrice and control group - without dentifrice) and type of simplified bonding agent (etch-and-rinse and self-etching agents). Resin composite blocks were fabricated on the dentin surfaces, after application of bonding agents, and specimens were sectioned into rectangular stick-shaped specimens with cross-sectional area of approximately 0.8mm². For microtensile bond strength tests, 4 sticks were randomly selected from the central region of specimens, and fixed to a universal test machine. Data were analyzed statistically by the Mann-Whitney U test (a=0.05). RESULTS: The bond strength obtained in the group without desensitizer (control) + etch-and-rinse agent was significantly higher compared with the other groups. Under both experimental conditions, the self-etching agent showed weak bond strength to dentin. CONCLUSIONS: Change in the dentin substrate by obliteration of tubules in the process of relieving dentinal sensitivity could reduce the bond strength of simplified etch-and-rinse and self-etching bonding agents.
publisher Faculdade de Odontologia de Piracicaba - UNICAMP
publishDate 2013
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1677-32252013000200015
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