The Substantiation of the Pre-Polymerization Heating Efficiency of the Dental Nanocomposite Material
Pesqui. bras. odontopediatria clín. integr
;
20: e0030, 2020. tab, graf
Artigo
em Inglês
| BBO, LILACS
| ID: biblio-1135517
ABSTRACT
Abstract Objective:
To evaluate the effect of pre-polymerization heating of nanocomposite filling materials on their strength properties within one manufacture group. Material andMethods:
Two nanocomposite filling materials Enamel Plus HRi Universal Dentin® and Universal Enamel® were used. The linear thermal expansion coefficient (LTEC), Young's modulus and penetration depth were determined during the tests. Changes in the structure of materials were evaluated using electron scanning microscopy.Results:
Dentin nanocomposite samples after pre-heating and polymerization have higher LTEC after 30°C compared to dentine nanocomposite untreated samples with statistically significance started at 62°C (p<0.05) and higher temperature. Pre-polymerization heated samples had a statistically higher LTEC (p<0.05) at 57°С. It was revealed that Young's modulus of the dentin nanocomposite samples after thermal processing at 55°C was higher in total after the first heating cycle by 15% compared to the untreated dentin nanocomposite samples (p<0.05). The volume of total porosity after pre-heating decreased to 5-7% (p<0.05).Conclusion:
The material that has undergone preliminary heat processing is significantly less deformed under load than the material that does not have thermal processing during the research was established and also has a denser structure.
Texto completo:
DisponíveL
Índice:
LILACS (Américas)
Assunto principal:
Teste de Materiais
/
Resinas Compostas
/
Materiais Dentários
/
Nanocompostos
Tipo de estudo:
Estudos de avaliação
País/Região como assunto:
Ásia
/
Europa
Idioma:
Inglês
Revista:
Pesqui. bras. odontopediatria clín. integr
Assunto da revista:
Odontologia
Ano de publicação:
2020
Tipo de documento:
Artigo
País de afiliação:
Federação Russa
Instituição/País de afiliação:
Peoples Friendship University of Russia/RU
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