A review on chemical composition, mechanical properties, and manufacturing work flow of additively manufactured current polymers for interim dental restorations

Abstract

Objectives Additive manufacturing (AM) technologies can be used to fabricate 3D‐printed interim dental restorations. The aim of this review is to report the manufacturing workflow, its chemical composition, and the mechanical properties that may support their clinical application. Overview These new 3D‐printing provisional materials are typically composed of monomers based on acrylic esters or filled hybrid material. The most commonly used AM methods to manufacture dental provisional restorations are stereolithography (SLA) and material jetting (MJ) technologies. To the knowledge of the authors, there is no published article that analyzes the chemical composition of these new 3D‐printing materials. Because of protocol disparities, technology selected, and parameters of the printers and material used, it is notably difficult to compare mechanical properties results obtained in different studies. Conclusions Although there is a growing demand for these high‐tech restorations, additional information regarding the chemical composition and mechanical properties of these new provisional printed materials is required. Clinical Significance Additive manufacturing technologies are a current option to fabricate provisional dental restorations; however, there is very limited information regarding its chemical composition and mechanical properties that may support their clinical application.

Materials in digital dentistry—A review

“…In addition, low amount of material wastage has made this technology popular particularly with precious alloys. Composition of AM materials, properties and preparation requirement can be found in Table . Various properties have not been reported and highlighted in Table to point out the properties missing and encourage further research to fill this empty gap.…”

“…Composition of AM materials, properties and preparation requirement can be found in Table 6. [63][64][65] Various properties have not been reported and highlighted in Table 6 to point out the properties missing and encourage further research to fill this empty gap.…”

Bonding of conventional provisional resin to 3D printed resin: the role of surface treatments and type of repair resins

“… 9 Provisional resins such as monomethacrylates and dimethacrylates are commonly used for chairside modification. 10 Although creating a durable bond between the 3D printed restoration and the conventional repair resin is crucial for its success, limited information is available on the compatibility between two materials.…”

Additive manufacturing of dental polymers: An overview on processes, materials and applications

“…At the moment, only a small number of additive manufactured polymers, approved for interim dental applications, are available. They can be divided into two groups based on their chemical composition (monomethacrylates or acrylic resin; dimethacrylates and urethane dimethacrylate (polymerisation induced by light)) 44) . Often specifications of the provisional AM polymers are not provided by the manufacturers.…”

“…In addition, possible materials must be processable using AM technology and at the same time -the physical properties required for the end product-can be integrated 48) . Mechanical properties such as flexural strength, hardness, impact strength and color stability are important regarding the usage of provisional dental restorations for a longer period of time 44) .…”