Manufacturing accuracy and volumetric changes of stereolithography additively manufactured zirconia with different porosities

Revilla‐León, Marta; Mostafavi, Delaram; Methani, Mohammad Mujtaba; Zandinejad, Amirali

doi:10.1016/j.prosdent.2020.06.021

Cited by 26 publications

(30 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…AM specimens showed the most volumetric changes, which could be attributed to the postprocessing steps that are involved in SLA AM of zirconia and have been reported before. 46 However, those volumetric changes were acceptable for the tensile bond strength test and no adjustment or grinding was necessary for any specimens in this study.…”

Section: Discussionmentioning

confidence: 81%

“…Although there was not any significant difference between 20% and 40% porosities, 40% porosity showed higher surface roughness, in both Sa and Sz parameters. However, in AM SLA technology for fabricating zirconia, the density of the object was controlled during postprocessing steps which makes it difficult to control the size and spreads of the porosities over the surface and thickness of the specimens 34,38,46 …”

Section: Discussionmentioning

confidence: 99%

“…The sintering procedures varied among the groups to achieve different porosities. For the AMZO group, the ZrO 2 specimens were sintered in a furnace at 1400°C, while for the AMZ20 and AMZ40 groups the sintering temperature varied from 1400°C to 1225°C 46 . No additional post processing procedures, including finishing or polishing, were performed.…”

Section: Methodsmentioning

confidence: 99%

“…For the AMZO group, the ZrO 2 specimens were sintered in a furnace at 1400°C, while for the AMZ20 and AMZ40 groups the sintering temperature varied from 1400°C to 1225°C. 46 No additional post processing procedures, including finishing or polishing, were performed. All of the AM specimens were produced by the manufacturer (3DCeram Co).…”

Section: Methodsmentioning

confidence: 99%

See 3 more Smart Citations

Surface Roughness and Bond Strength of Resin Composite to Additively Manufactured Zirconia with Different Porosities

Zandinejad¹,

Khanlar

Barmak

et al. 2022

Journal of Prosthodontics

Self Cite

View full text Add to dashboard Cite

Purpose To investigate the bond strength of resin cement to additively manufactured (AM) zirconia with different porosities when compared to milled zirconia. Materials and Methods A 12 × 5 mm disk virtual design file was used to fabricate a total of 48 disks divided into 4 groups: 3 groups were AM with different porosities including 0%‐porosity (AMZ0 group), 20%‐porosity (AMZ20 group), and 40%‐porosity (AMZ40 group), and 1 milled zirconia (control or CNCZ group). The dimensions of all specimens were measured using a digital caliper. A 3D‐ confocal laser scanner was used to analyze surface morphology and measure the surface roughness (Sa), followed by SEM analysis. Tensile bond strength of composite resin cement to specimens was measured before and after aging procedures using a universal testing machine (n = 10). Failure modes were evaluated under a light microscope. Volumetric change data was analyzed using one‐way ANOVA, and two‐way ANOVA was used to compare bond strength values (α = 0.05). Results There was a significant difference in volumetric changes among the groups. The CNCZ group showed the least changes in diameter 0.027 ± 0.029 mm and thickness 0.030 ± 0.012 mm and AM zirconia with 40% porosity showed the most volumetric changes in diameter 5.237 ± 0.023 mm. ANOVA test indicated an overall significant difference in surface roughness across all groups (F = 242.6, p < 0.001). The CNCZ group showed the highest mean Sa of 1.649 ± 0.240 µm, followed by AMZ40 group with Sa of 0.830 ± 0.063 µm, AMZ20 group with Sa of 0.780 ± 0.070 µm, and the AMZ0 group with Sa of 0.612 ± 0.063 µm. Two‐way ANOVA showed significant difference in bond strength between the CNCZ group 12.109 ± 3.223 MPa and the AMZ0 group 8.629 ± 0.914 MPa, with significant pretest failures in specimens with porosities. Thermal cycling methods reduced the bond strength non‐significantly in CNCZ group with no effect in the AMZ0 group. Conclusion Milled zirconia had a higher surface roughness and bond strength to composite resin cement than AM zirconia, and porosities in AM zirconia decreased the bond strength with significant pretest failures.

show abstract

Section: Discussionmentioning

confidence: 81%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

See 2 more Smart Citations

Surface Roughness and Bond Strength of Resin Composite to Additively Manufactured Zirconia with Different Porosities

Zandinejad¹,

Khanlar

Barmak

et al. 2022

Journal of Prosthodontics

Self Cite

View full text Add to dashboard Cite

show abstract

“…Moreover, mastication simulating aging had a significant decrease in both AM and milled groups in terms of flexural strength and fracture resistance. In another study, Revilla-León et al [ 37 ] investigated the manufacturing accuracy and volumetric changes of SLA additively manufactured zirconia specimens with porosities of 0%, 20%, and 40%. A bar-shaped digital design and a photopolymerizable ceramic suspension was used in the SLA technology.…”

Section: Additive Manufacturing Techniques For Zirconia Ceramicmentioning

confidence: 99%

Additive Manufacturing of Zirconia Ceramic and Its Application in Clinical Dentistry: A Review

et al. 2021

Self Cite

View full text Add to dashboard Cite

Additive manufacturing (AM) has many advantages and became a valid manufacturing technique for polymers and metals in dentistry. However, its application for dental ceramics is still in process. Among dental ceramics, zirconia is becoming popular and widely used in dentistry mainly due to its outstanding properties. Although subtractive technology or milling is the state of art for manufacturing zirconia restorations but still has shortcomings. Utilizing AM in fabricating ceramics restorations is a new topic for many researchers and companies across the globe and a good understanding of AM of zirconia is essential for dental professional. Therefore, the aim of this narrative review is to illustrate different AM technologies available for processing zirconia and discus their advantages and future potential. A comprehensive literature review was completed to summarize different AM technologies that are available to fabricate zirconia and their clinical application is reported. The results show a promising outcome for utilizing AM of zirconia in restorative, implant and regenerative dentistry. However further improvements and validation is necessary to approve its clinical application.

show abstract

Additive Manufacturing Procedures and Clinical Applications in Restorative Dentistry

Revilla‐León¹,

Zandinejad²

2022

Clinical Applications of Digital Dental Technology

View full text Add to dashboard Cite

Manufacturing accuracy and volumetric changes of stereolithography additively manufactured zirconia with different porosities

Cited by 26 publications

References 23 publications

Surface Roughness and Bond Strength of Resin Composite to Additively Manufactured Zirconia with Different Porosities

Surface Roughness and Bond Strength of Resin Composite to Additively Manufactured Zirconia with Different Porosities

Additive Manufacturing of Zirconia Ceramic and Its Application in Clinical Dentistry: A Review

Additive Manufacturing Procedures and Clinical Applications in Restorative Dentistry

Contact Info

Product

Resources

About