Fracture resistance of Class II glass-ionomer cement restorations.
Am J Dent
; 21(3): 163-7, 2008 Jun.
Article
em En
| MEDLINE
| ID: mdl-18686767
PURPOSE: To investigate in vitro the effect of retentive grooves, GIC type and insertion method on the fracture resistance of Class II glass-ionomer cement (GIC) restorations. METHODS: Premolars were divided into 12 groups (n = 10) according to three variables: retentive grooves [presence (PR) or absence AR)], GICs type [Ketac-Molar (KM), Fuji VIII (F8) and RelyX Luting (RX)], and insertion method [syringe injector (SI) or spoon excavator (SE)]. The specimens were subjected to fracture resistance test. Data were submitted to three-way ANOVA and multiple comparisons were performed using a Tukey test (P < 0.05). RESULTS: Mean fracture resistance values (Kgf) +/- standard deviations (SD) were: KM (PR+SI) = 65.66 +/- 2.5; KM (PR+SE) = 62.58 +/- 2.1; KM (AR+SI) = 57.11 +/- 1.9; KM (AR+SE) = 51.94 +/- 2.3; F8 (PR+SI) = 63.05 +/- 2.1; F8 (PR+SE) = 60.12 +/- 2.3; F8 (AR+SI) = 55.11 +/- 1.9; F8(AR+SE) = 49.20 +/- 1.6; RX (PR+SI) = 50.99 +/- 2.4; RX (PR+SE) = 48.81 +/- 2.5; RX (AR+SI) = 45.53 +/- 2.6; RX (AR+SE) = 41.88 +/- 3.0. Statistically significant differences were observed among all the groups tested (P = 0.001). There was significant difference when pooled means for GIC type were compared with retentive grooves (P = 0.01) and when pooled means for retentive grooves were compared with insertion method (P = 0.01).
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Falha de Restauração Dentária
/
Restauração Dentária Permanente
/
Cimentos de Ionômeros de Vidro
Limite:
Humans
Idioma:
En
Revista:
Am J Dent
Assunto da revista:
ODONTOLOGIA
Ano de publicação:
2008
Tipo de documento:
Article
País de afiliação:
Brasil
País de publicação:
Estados Unidos