Influence of five home whitening gels and a remineralizing gel on the enamel and dentin ultrastructure and hardness.
Am J Dent
; 24(3): 131-7, 2011 Jun.
Article
em En
| MEDLINE
| ID: mdl-21874930
ABSTRACT
PURPOSE:
To investigate the influence of calcium phosphate enhanced home whitening agents on human enamel and dentin surface microhardness and ultramorphology.METHODS:
Five intact molars crowns were used for ultrastructural analysis and five for microhardness test. Each resulting coronal structure was cut in slices. After measuring baseline Knoop Hardness Number (KHN) of the enamel and dentin, the slices were divided into six experimental groups and one control (n= 5). G1= 15% carbamide peroxide (CP); G2= 16% CP; G3= Ca and PO4 (remineralizing agent); G4= 16% CP with Ca and PO4; G5= 7.5% hydrogen peroxide (HP) with Ca and PO4; G6=7.5% HP with Ca. After each daily session of treatment, specimens were stored in distilled water (37 degrees C) until the next session. Products were applied for 2 weeks, according to manufacturers' instructions. Additional KHN weredetermined.RESULTS:
Conventional whitening agents (G1; G2) and the gel with Ca (G6), caused KHN decrease (P< 0.05).The remineralizing and whitening agents with Ca and PO4 (G3; G4; G5) did not change KHN. A change of morphology was observed on enamel and dentin surfaces in G1; G2; G5.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Remineralização Dentária
/
Esmalte Dentário
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Dentina
/
Clareadores Dentários
Limite:
Humans
Idioma:
En
Revista:
Am J Dent
Assunto da revista:
ODONTOLOGIA
Ano de publicação:
2011
Tipo de documento:
Article
País de publicação:
EEUU
/
ESTADOS UNIDOS
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ESTADOS UNIDOS DA AMERICA
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EUA
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UNITED STATES
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UNITED STATES OF AMERICA
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US
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USA