Effect of 7.5% hydrogen peroxide containing remineralizing agents on hardness, color change, roughness and micromorphology of human enamel
Robson Tetsuo Sasaki, Anderson Catelan, Carlos Eduardo dos Santos Bertoldo, Paulo César Venâncio, Francisco Carlos Groppo, Gláucia Maria Bovi Ambrosano, Giselle M. Marchi, Débora Alves Nunes Leite Lima, Flávio Henrique Baggio Aguiar
ARTIGO
Inglês
To determine the microhardness, color change, surface roughness, and micromorphology of tooth enamel submitted to bleaching treatment with 7.5% hydrogen peroxide (HP) with added calcium, amorphous calcium phosphate, sodium fluoride (NaF), and hydroxyapatite (HA). 80 enamel slabs were used (n = 10)....
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To determine the microhardness, color change, surface roughness, and micromorphology of tooth enamel submitted to bleaching treatment with 7.5% hydrogen peroxide (HP) with added calcium, amorphous calcium phosphate, sodium fluoride (NaF), and hydroxyapatite (HA). 80 enamel slabs were used (n = 10). Three commercial agents [Pola Day 7.5%, Day White ACP 7.5% (DW-ACP), and White Class Calcium 7.5% (WC-Calcium)], three experimental (7.5% HP+NaF, 7.5% HP+HA, and 7.5% PH+NaF+HA), a positive control (with HP), and a negative control (without HP) groups were assessed. The commercial products were applied according to manufacturers' recommendations and the experimental ones were applied for 1.5 hours daily. During and after treatment, specimens were stored in artificial saliva. Tests were performed at baseline, 7, 14, 21, 28, and 35 days. Data were analyzed by ANOVA and Tukey's test (a=0.05). DW-ACP presented lower microhardness and HP+HA presents the highest values (P < 0.05); only the experimental group presented color change similar to the commercial agents (P > 0.05). Overall, roughness increased with time (P < 0.05) and porosities, and deposition of crystalline structures in groups HP+HA and HP+NaF+HA were noted. The HP+HA agent was capable of reducing the loss of enamel microhardness due to bleaching and also present color change similar to the commercial products
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FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULO - FAPESP
FAPESP [2009/03354-2]
fechado
Effect of 7.5% hydrogen peroxide containing remineralizing agents on hardness, color change, roughness and micromorphology of human enamel
Robson Tetsuo Sasaki, Anderson Catelan, Carlos Eduardo dos Santos Bertoldo, Paulo César Venâncio, Francisco Carlos Groppo, Gláucia Maria Bovi Ambrosano, Giselle M. Marchi, Débora Alves Nunes Leite Lima, Flávio Henrique Baggio Aguiar
Effect of 7.5% hydrogen peroxide containing remineralizing agents on hardness, color change, roughness and micromorphology of human enamel
Robson Tetsuo Sasaki, Anderson Catelan, Carlos Eduardo dos Santos Bertoldo, Paulo César Venâncio, Francisco Carlos Groppo, Gláucia Maria Bovi Ambrosano, Giselle M. Marchi, Débora Alves Nunes Leite Lima, Flávio Henrique Baggio Aguiar
Fontes
American journal of dentistry (Fonte avulsa) |