Your browser doesn't support javascript.
loading
Biomechanical Behavior of a 3D-Printed Denture Base Material.
Int J Prosthodont ; 37(7): 109-117, 2024 02 21.
Article em En | MEDLINE | ID: mdl-38498862
ABSTRACT

PURPOSE:

To evaluate relevant material properties (flexural strength [σf], elastic modulus [E], water sorption [Wsp] and solubility [Wsl], and biocompatibility) of an additive manufacturing (AM) polymer vs a heat-curing acrylic resin (AR; control) for the manufacture of complete dentures, testing the hypothesis that fabrications from both materials would present acceptable material properties for clinical use. MATERIALS AND

METHODS:

The σf, E, Wsp, and Wsl were evaluated according to the ISO 20795-12013 standard, and the biocompatibility was evaluated using MTT and SRB assays. Disk-shaped specimens were fabricated and used for Wsp (n = 5), Wsl (n = 5), and biocompatibility (n = 3) testing. For assessment of σf and E, bar-shaped specimens (n = 30) were fabricated and stored in 37°C distilled water for 48 hours or 6 months before flexural testing in a universal testing machine with a constant displacement rate (5 ± 1 mm/minute). Data from σf, E, Wsp, Wsl, and biocompatibility tests were statistically analyzed using Student t test (α = .05). Weibull analysis was also used for σf and E data.

RESULTS:

Significant differences between the two materials were found for the evaluated material properties. Water storage for 6 months did not affect the flexural strength of the AM polymer, but this material showed inadequate σf and Wsl values.

CONCLUSIONS:

Despite adequate biocompatibility and strength stability after 6 months of water storage, the AM polymer recommended for complete dentures needs further development to improve the material properties evaluated in this study.
Assuntos

Texto completo: 1 Base de dados: MEDLINE Assunto principal: Materiais Dentários / Bases de Dentadura Idioma: En Ano de publicação: 2024 Tipo de documento: Article

Texto completo: 1 Base de dados: MEDLINE Assunto principal: Materiais Dentários / Bases de Dentadura Idioma: En Ano de publicação: 2024 Tipo de documento: Article