Your browser doesn't support javascript.
loading
Influence of printing orientation on mechanical properties of aged 3D-printed restorative resins.
Espinar, Cristina; Pérez, María M; Pulgar, Rosa; Leon-Cecilla, Alberto; López-López, Modesto T; Della Bona, Alvaro.
Afiliación
  • Espinar C; Department of Stomatology, Faculty of Dentistry, Colegio Máximo, Campus de Cartuja s/n. University of Granada, 18071 Granada, Spain.
  • Pérez MM; Department of Optics, Faculty of Science, Campus Fuentenueva, Edificio Mecenas, s/n. University of Granada, 18071 Granada, Spain.
  • Pulgar R; Department of Stomatology, Faculty of Dentistry, Colegio Máximo, Campus de Cartuja s/n. University of Granada, 18071 Granada, Spain.
  • Leon-Cecilla A; Department of Applied physics, Faculty of Science, Campus Fuentenueva, University of Granada, 18071 Granada, Spain.
  • López-López MT; Department of Applied physics, Faculty of Science, Campus Fuentenueva, University of Granada, 18071 Granada, Spain.
  • Della Bona A; Postgraduate Program in Dentistry, Dental School, University of Passo Fundo, Campus I, Passo Fundo, RS, Brazil. Electronic address: dbona@upf.br.
Dent Mater ; 40(4): 756-763, 2024 Apr.
Article en En | MEDLINE | ID: mdl-38429216
ABSTRACT

OBJECTIVE:

To evaluate the influence of printing orientation on flexural strength (σf) and elastic modulus (E) of different 3D printing dental restorative resins.

METHODS:

Bar-shaped specimens (n = 20) were fabricated from two SLA-printed resins (FT- Formlabs Temporary, and FP- Formlabs Permanent) and two DLP-printed resins (DFT- Detax Freeprint Temp, and GCT- GC Temporary) using two building orientations (0º and 90º). The 3D-printed structures were aged (14 d) before submitted to three-point bending in 37ºC distilled water at a crosshead speed of 1.0 ± 0.3 mm/min until fracture to calculate the σf and the E values. The fractured surfaces were evaluated using stereomicroscopy and scanning electron microscopy (SEM) following fractography principles. Data were statistically analyzed using two-way ANOVA and Tukey post-hoc (α = 0.001).

RESULTS:

FP and FT showed significantly higher E values than DFT and GCT, irrespectively of printing orientation (p < 0.001). There was no statistical difference between the building orientations (0º and 90º) for the mean σf and E values for the resin materials evaluated. Fractographic characteristics were similar for the surface fracture from all the materials evaluated, showing typical brittle fracture behavior.

SIGNIFICANCE:

Printing orientation did not influence of flexural strength and elastic modulus values for the 3D-printed resin structures evaluated. Surface topography was mostly governed by the 3D printer type.
Asunto(s)
Palabras clave

Texto completo: 1 Banco de datos: MEDLINE Asunto principal: Resinas Compuestas / Materiales Dentales Idioma: En Revista: Dent Mater Asunto de la revista: ODONTOLOGIA Año: 2024 Tipo del documento: Article País de afiliación: España

Texto completo: 1 Banco de datos: MEDLINE Asunto principal: Resinas Compuestas / Materiales Dentales Idioma: En Revista: Dent Mater Asunto de la revista: ODONTOLOGIA Año: 2024 Tipo del documento: Article País de afiliación: España