Compressive strength of glass ionomer cements used for atraumatic restorative treatment

  • Letícia Busanello
  • Manuela Telles
  • Walter Gomes Miranda Junior
  • José Carlos Imparato
  • Letícia Borges Jacques
  • André Mallmann Fundação Bahiana para o Desenvolvimento das Ciências
Keywords: Cimento de ionômero de vidro, Resistência à compressão, Tratamento restaurador atraumático, Glass ionomer cements, Compressive strength, Atraumatic restorative treatment

Abstract

Purpose: This study evaluated the compressive strength of five glass ionomer cements (Ketac Molar, Fuji IX, Magic Glass, Vidrion R, and Vitro Molar) as a function of storage period (1 hour and 24 hours). Methods: Sixteen specimens of each material were fabricated according to ISO/DP #7489 Specification using a 6×12 mm (diameter and height) matrix. After setting, specimens were stored in distilled water at 37 ºC. Eight specimens per cement were subjected to the compressive strength test in a universal testing machine after 1 hour, and the other eight specimens were tested after 24 hours. Data were analyzed by ANOVA and Tukey’s test (α=5%). Results: The compressive strength mean values (kgf) after 1 and 24 hours were: Ketac Molar: 218.75 and 297.88; Fuji IX: 335.75 and 350.88; Magic Glass: 61.50 and 140.13; Vidrion R: 142.38 and 230.88; and Vitro Molar: 183.38 and 297.50. After 1 hour Fuji IX had the highest compressive strength. All materials but Fuji IX showed higher compressive strength in 24 hours than in 1 hour. After 24 hours, no significant differences were found among Fuji IX, Ketac Molar, and Vitro Molar. Magic Glass had the lowest compressive strength in both storage periods. Conclusion: Fuji IX showed the best results after 1 hour. After 24-hour storage, Fuji IX, Ketac Molar, and Vitro Molar had similar performance.

Author Biography

André Mallmann, Fundação Bahiana para o Desenvolvimento das Ciências
Doutor em Materiais Dentários - FOUSP; Prof. Adjunto de Biomateriais, Escultura Dental e Clínica Integrada III do Curso de Odontologia da FBDC; Prof. do Mestrado em Odontologia da FBDC; Prof. dos Cursos de Atualização e Especialização da ABO-BA e ABO-SE.
Published
2009-05-28
Section
Original Article