Publications by authors named "Fernanda Gurgel de Gois Moreira"
Influence of 3D printing system, postpolymerization and aging protocols on resin flexural strength and dimensional stability for printing occlusal splints, models and temporary restorations.
Clin Oral Investig
October 2024
Article Synopsis
- The study aimed to assess how various postpolymerization methods, aging, and 3D printing technologies affect the properties of dental resins used for occlusal splints, models, and temporary restorations.
- A total of 180 resin bars were printed and evaluated based on different postpolymerization treatments (control, UV oven, microwave), printers (SLA, LCD), and aging conditions (thermocycling or not).
- Results indicated that LCD printing with UV postpolymerization yielded the highest flexural strength, while SLA printing with microwave postpolymerization resulted in significant dimensional shrinkage, particularly in occlusal splint resins.
Influence of build direction, post-polymerization time, and aging on the fracture resistance and marginal and internal discrepancies of three-dimensional printed provisional crowns.
Odontology
September 2024
Article Synopsis
- The study aimed to assess how build direction, post-polymerization time, and aging affect the fracture resistance and quality of 3D printed provisional crowns created with an LCD technique.
- One hundred and eighty crowns were printed at two angles (30° and 90°) and post-polymerized for varying times, then aged in water to analyze their marginal discrepancies and overall strength.
- Results revealed that all tested factors significantly impacted marginal and internal discrepancies, with better outcomes in crowns printed at 30° and specific post-polymerization times leading to higher fracture resistance and smoother margins.
Accuracy, adaptation and margin quality of monolithic zirconia crowns fabricated by 3D printing versus subtractive manufacturing technique: A systematic review and meta-analysis of in vitro studies.
J Dent
August 2024
Objective: The purpose of this systematic review and meta-analysis was to evaluate the accuracy (trueness and precision), marginal and internal adaptation, and margin quality of zirconia crowns made by additive manufacturing compared to subtractive manufacturing technology.
Methods: The investigation adhered to the PRISMA-ScR guidelines for systematic reviews and was registered at the Prospero database (n°CRD42023452927). Four electronic databases, including PubMed, Scopus, Embase, and Web of Science and manual search was conducted to find relevant studies published until September 2023.
The objective is to evaluate the effect of different surface treatments and storage on the shear strength of ultratranslucent zirconia. 36 blocks of ultra-translucent zirconia were fabricated (7x7x2mm) and sintered. Then, divided into 12 groups according to the "surface treatment" (C -Primer; Al -Sandblasting with Al2O3 + Primer; Si -Silicate + Primer; Gl -Glaze + HF + Primer; Z -Zirlink; Zp -Zirlink + Primer) and "storage" factors (ST-with 150 days/37º and without).
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