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Evaluation of biaxial flexural strength and modulus of filled and unfilled adhesive systems / Avaliação da resistência flexural biaxial e módulo de flexão de sistemas adesivos
Liberti, Michele Santana; Mettenburg, Donald; Arrais, César Augusto Galvão; Rueggeberg, Fredterick Allen; Giannini, Marcelo.
  • Liberti, Michele Santana; State University of Campinas. Piracicaba Dental School. Department of Restorative Dentistry. Piracicaba. BR
  • Mettenburg, Donald; Medical College of Georgia. School of Dentistry. Department of Oral Rehabilitation. Augusta. US
  • Arrais, César Augusto Galvão; University of Guarulhos. School of Dentistry. Department of Operative Dentistry. Guarulhos. BR
  • Rueggeberg, Fredterick Allen; Medical College of Georgia. School of Dentistry. Department of Oral Rehabilitation. Augusta. US
  • Giannini, Marcelo; State University of Campinas. Piracicaba Dental School. Department of Restorative Dentistry. Piracicaba. BR
Rev. odonto ciênc ; 24(1): 15-18, jan.-mar. 2009. tab
Article in English | LILACS, BBO | ID: lil-506369
ABSTRACT

Purpose:

The purpose of this study was to evaluate the flexural strength and modulus of two adhesive systems using biaxial flexural strength test.

Methods:

The bonding agents (Pentron Clinical Technologies) tested were Bond 1 (B1) and NanoBond (NB). Thirteen disks (6.1 mm diameter and 0.6 mm thick) were prepared with adhesive solutions of each bonding agents using Teflon molds. The adhesive solutions within the molds were light-activated with XL 3000 curing unit (3M ESPE) for 10 s on both sides. The disks were stored for 10 days and were tested in a universal testing machine (1.27 mm/min - Instron 5844). Data were statistically analyzed by one-way ANOVA (á=0.05).

Results:

The mean values of fracture strength (±SD) for adhesive systems were (in MPa)B1- 89.7±7.6 e NB- 131.1±9.5. Modulus means (±SD) were (in MPa) B1- 1999.9±258.4 e NB- 2314.5±271.0.

Conclusion:

The filled adhesive system (NB) exhibited higher strength and flexural modulus means than the unfilled adhesive B1.
RESUMO

Objetivo:

O objetivo deste estudo foi avaliar a resistência flexural e o módulo de flexão de dois sistemas adesivos, através de ensaio de resistência flexural biaxial.

Metodologia:

Os adesivos (Pentron Clinical Technologies) estudados foram Bond 1 (B1) e NanoBond (NB). Treze discos de cada adesivo foram preparados com dimensões aproximadas de 6,1 mm de diâmetro e 0,6 mm de espessura. Os discos de adesivos foram confeccionados utilizando-se moldes de teflon e fotopolimerizados com aparelho XL 3000 (3M ESPE). Após armazenamento por 10 dias, os discos foram testados em máquina universal de ensaio (Instron 5844), com velocidade de 1,27 mm/min. Os dados foram submetidos à análise de variância (1 fator) ao nível de significância de 0,05.

Resultados:

Os valores médios (±DP) de resistência flexural para os adesivos foram (em MPa) B1- 89,7±7,6 e NB- 131,1±9,5. Os valores médios de módulo flexural (±DP) foram (em MPa) B1- 1999,9±258,4 e NB- 2314,5±271,0.

Conclusão:

O adesivo contendo partículas de carga (NB) mostrou maiores valores de resistência flexural e módulo de flexão que o adesivo B1.
Subject(s)

Full text: Available Index: LILACS (Americas) Main subject: Materials Testing / Dentin-Bonding Agents Type of study: Evaluation studies Language: English Journal: Rev. odonto ciênc Journal subject: Dentistry Year: 2009 Type: Article Affiliation country: Brazil / United States Institution/Affiliation country: Medical College of Georgia/US / State University of Campinas/BR / University of Guarulhos/BR

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Full text: Available Index: LILACS (Americas) Main subject: Materials Testing / Dentin-Bonding Agents Type of study: Evaluation studies Language: English Journal: Rev. odonto ciênc Journal subject: Dentistry Year: 2009 Type: Article Affiliation country: Brazil / United States Institution/Affiliation country: Medical College of Georgia/US / State University of Campinas/BR / University of Guarulhos/BR