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Fracture resistance, marginal and internal adaptation of innovative 3D-printed graded structure crown using a 3D jet printing technology.
Zandinejad, Amirali; Zadeh, Ramtin Sadid; Khanlar, Leila Nasiry; Barmak, Abdul Basir; Revilla-León, Marta.
Afiliación
  • Zandinejad A; Implant Dentistry Associates of Arlington, ClearChoice, Arlington, Texas, USA.
  • Zadeh RS; School of Medicine and Dentistry, University of Rochester, Rochester, New York, USA.
  • Khanlar LN; Department of Restorative Dentistry, School of Dentistry, University of Alabama at Birmingham, Birmingham, Alabama, USA.
  • Barmak AB; A.T. Still University-Missouri School of Dentistry & Oral Health, Kirksville, Missouri, USA.
  • Revilla-León M; Clinical Research and Biostatistics, School of Medicine and Dentistry, University of Rochester, Rochester, New York, USA.
J Prosthodont ; 33(7): 684-690, 2024 Aug.
Article en En | MEDLINE | ID: mdl-39118597
ABSTRACT

PURPOSE:

This in vitro study aimed to create a graded structured dental crown using 3D printing technology and investigate the fracture resistance and the adaptation of this new design. MATERIALS AND

METHODS:

A dental crown with a uniform thickness of 1.5 mm was designed, and the exported stereolithography file (STL) was used to manufacture 30 crowns in three groups (n = 10), solid (SC), bilayer (BL), and multilayer (ML) crowns using  3D jet printing technology. Marginal and internal gaps were measured using the silicone replica technique. Crowns were then luted to a resin die using a temporary luting agent and the fracture resistance was measured using a universal testing machine. One-way ANOVA and Tukey post hoc tests were used to compare the fracture resistance and the adaptation of crowns at a significance level of 0.05.

RESULTS:

Mean marginal and internal gap of the ML group were 80 and 82 mm, respectively; which were significantly (p < 0.05) smaller than BL (203 and 183 mm) and SC (318 and 221 mm) groups. The SC group showed the highest mean load at fracture (2330 N) which was significantly (p < 0.05) higher than the BL (1716 N) and ML (1516 N) groups.

CONCLUSION:

3D jet printing technology provides an opportunity to manufacture crowns in a graded structure with various mechanical properties. This study provided an example of graded structured crowns and presented their fracture resistance. SC group had the highest fracture resistance; however, ML had the best marginal and internal adaptation.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Diseño de Prótesis Dental / Coronas / Análisis del Estrés Dental / Impresión Tridimensional Límite: Humans Idioma: En Revista: J Prosthodont Asunto de la revista: ODONTOLOGIA Año: 2024 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Estados Unidos
Texto completo
Añadir a Mi BVS
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XML
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Diseño de Prótesis Dental / Coronas / Análisis del Estrés Dental / Impresión Tridimensional Límite: Humans Idioma: En Revista: J Prosthodont Asunto de la revista: ODONTOLOGIA Año: 2024 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Estados Unidos