Bruna Castro Moreira DDS, MS, Bruna de Souza Guedes DDS, Cristine Miron Stefani DDS, MS, PhD, Rodrigo Antonio de Medeiros DDS, MS, PhD
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引用次数: 0
Abstract
Statement of problem
Variations in 3-dimensional (3D) printing parameters generate uncertainties regarding the mechanical properties and durability of occlusal devices.
Variations in 3-dimensional (3D) printing parameters generate uncertainties regarding the mechanical properties and durability of occlusal devices.
Purpose
This methodological review aimed to identify and analyze the available scientific evidence regarding the influence of printing parameters on the mechanical properties of occlusal devices manufactured using 3D printing.
This methodological review aimed to identify and analyze the available scientific evidence regarding the influence of printing parameters on the mechanical properties of occlusal devices manufactured using 3D printing.
Material and methods
Searches were conducted in the PubMed, Embase, Scopus, Web of Science, and LILACS databases, as well as in nonpeer-reviewed literature through a Google Scholar search, by following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) 2020 checklist. In vitro studies that evaluated the mechanical and structural properties of 3D printed occlusal devices, considering printing variables such as material composition, printer type, layer thickness and orientation, washing and postpolymerization protocols, and influencing variables such as storage and aging conditions were included.
Searches were conducted in the PubMed, Embase, Scopus, Web of Science, and LILACS databases, as well as in nonpeer-reviewed literature through a Google Scholar search, by following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) 2020 checklist. In vitro studies that evaluated the mechanical and structural properties of 3D printed occlusal devices, considering printing variables such as material composition, printer type, layer thickness and orientation, washing and postpolymerization protocols, and influencing variables such as storage and aging conditions were included.
Results
The included studies consistently demonstrated that printing parameters influenced the mechanical and structural properties. Most studies indicated that thinner layers (25 to 50 μm) and printing angles of 45-degree orientation result in better mechanical properties and greater dimensional accuracy. Water immersion and thermocycling negatively influenced the mechanical properties. Light-polymerized resins showed significant mechanical improvements when associated with adequate postpolymerization treatment.
The included studies consistently demonstrated that printing parameters influenced the mechanical and structural properties. Most studies indicated that thinner layers (25 to 50 μm) and printing angles of 45-degree orientation result in better mechanical properties and greater dimensional accuracy. Water immersion and thermocycling negatively influenced the mechanical properties. Light-polymerized resins showed significant mechanical improvements when associated with adequate postpolymerization treatment.
Conclusions
The mechanical performance of 3D printed occlusal devices is influenced by printing parameters, postpolymerization, and aging conditions.
The mechanical performance of 3D printed occlusal devices is influenced by printing parameters, postpolymerization, and aging conditions.
期刊介绍:
The Journal of Prosthetic Dentistry is the leading professional journal devoted exclusively to prosthetic and restorative dentistry. The Journal is the official publication for 24 leading U.S. international prosthodontic organizations. The monthly publication features timely, original peer-reviewed articles on the newest techniques, dental materials, and research findings. The Journal serves prosthodontists and dentists in advanced practice, and features color photos that illustrate many step-by-step procedures. The Journal of Prosthetic Dentistry is included in Index Medicus and CINAHL.