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Effect of 3D printing technology and print orientation on the trueness of additively manufactured definitive casts with different tooth preparations.
Demirel, Münir; Diken Türksayar, Almira Ada; Donmez, Mustafa Borga; Yilmaz, Burak.
Afiliación
  • Demirel M; Department of Prosthodontics, Faculty of Dentistry, Biruni University, Istanbul, Turkey.
  • Diken Türksayar AA; Department of Prosthodontics, Faculty of Dentistry, Biruni University, Istanbul, Turkey.
  • Donmez MB; Department of Prosthodontics, Faculty of Dentistry, Biruni University, Istanbul, Turkey; Department of Reconstructive Dentistry and Gerodontology, School of Dental Medicine, University of Bern, Bern, Switzerland. Electronic address: mustafa-borga.doenmez@unibe.ch.
  • Yilmaz B; Department of Reconstructive Dentistry and Gerodontology, School of Dental Medicine, University of Bern, Bern, Switzerland; Department of Restorative, Preventive and Pediatric Dentistry, School of Dental Medicine, University of Bern, Bern, Switzerland; Division of Restorative and Prosthetic Dentistr
J Dent ; 148: 105244, 2024 09.
Article en En | MEDLINE | ID: mdl-39068858
ABSTRACT

OBJECTIVES:

To evaluate the fabrication trueness of additively manufactured maxillary definitive casts with various tooth preparations fabricated with different 3-dimensional (3D) printers and print orientations.

METHODS:

A maxillary typodont with tooth preparations for a posterior 3-unit fixed partial denture, lateral incisor crown, central incisor and canine veneers, first premolar and second molar inlays, and a first molar crown was digitized with an industrial scanner. This scan file was used to fabricate definitive casts with a digital light processing (DLP) or stereolithography (SLA) 3D printer in different orientations (0-degree, 30-degree, 45-degree, and 90-degree) (n = 7). All casts were digitized with the same scanner, and the deviations within each preparation site were evaluated. Generalized linear model analysis was used for statistical analysis (α = 0.05).

RESULTS:

The interaction between the 3D printer and the print orientation affected measured deviations within all preparations (P ≤ 0.001) except for the lateral incisor crown and canine veneer (P ≥ 0.094), which were affected only by the main factors (P < 0.001). DLP-90 mostly led to the highest and DLP-0 mostly resulted in the lowest deviations within posterior tooth preparations (P ≤ 0.014). DLP-30 led to the lowest deviations within the first premolar inlay and DLP-45 led to the lowest deviations within the central incisor veneer preparation (P ≤ 0.045).

CONCLUSIONS:

Posterior preparations of tested casts had the highest trueness with DLP-0 or DLP-30, while central incisor veneer preparations had the highest trueness with DLP-45. DLP-90 led to the lowest trueness for most of the tooth preparations. CLINICAL

SIGNIFICANCE:

Definitive casts with tooth preparations fabricated with the tested DLP 3D printer and the print orientation adjusted on tooth preparation may enable well-fitting restorations. However, 90-degree print orientation should be avoided with this 3D printer, as it led to the lowest fabrication trueness.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Diseño Asistido por Computadora / Modelos Dentales / Coronas con Frente Estético / Impresión Tridimensional Límite: Humans Idioma: En Revista: J Dent Año: 2024 Tipo del documento: Article País de afiliación: Turquía Pais de publicación: Reino Unido
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Diseño Asistido por Computadora / Modelos Dentales / Coronas con Frente Estético / Impresión Tridimensional Límite: Humans Idioma: En Revista: J Dent Año: 2024 Tipo del documento: Article País de afiliación: Turquía Pais de publicación: Reino Unido