Mechanical properties of polymethyl methacrylate as a denture base: Conventional versus CAD-CAM resin – A systematic review and meta-analysis of in vitro studies

Limírio, João Pedro Justino de Oliveira; Gomes, Jéssica Marcela de Luna; Rezende, Maria Cristina Rosifini Alves; Lemos, Cleidiel Aparecido Araújo; Rosa, Cléber Davi Del Rei Daltro; Pellizzer, Eduardo Piza

doi:10.1016/j.prosdent.2021.03.018

Cited by 63 publications

(46 citation statements)

References 29 publications

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“…Heat-cured polymethyl methacrylate (PMMA) is frequently used to fabricate denture bases due to the favorable physical, 1,2 mechanical, 3,4 chemical 5,6 and aesthetic properties 7,8 of the processed material. Nevertheless, the biological properties of PMMA show limitations mostly associated with the presence of residual monomers or their byproducts in the set material.…”

Section: Introductionmentioning

confidence: 99%

The effect of cooling procedures on monomer elution from heat-cured polymethyl methacrylate denture base materials

et al. 2022

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The effect of cooling procedures on monomer elution from heat-cured polymethyl methacrylate denture base materials Objective: To evaluate the amount of methyl methacrylate (MMA) released in water from heat-cured polymethyl methacrylate (PMMA) denture base materials subjected to different cooling procedures. Methodology: Diskshaped specimens (Ø:17 mm, h:2 mm) were fabricated from Paladon 65 (PA), ProBase Hot (PB), Stellon QC-20 (QC) and Vertex Rapid Simplified (VE) denture materials using five different cooling procedures (n=3/procedure): A) Bench-cooling for 10 min and then under running water for 15 min; B) Cooling in water-bath until room temperature; C) Cooling under running water for 15 min; D) Bench-cooling, and E) Bench-cooling for 30 min and under running water for 15 min. A, B, D, E procedures were proposed by the manufacturers, while the C was selected as the fastest one. Control specimens (n=3/material) were fabricated using a long polymerization cycle and bench-cooling. After deflasking, the specimens were ground, polished and stored in individual containers with 10 ml of distilled water for seven days (37 o C). The amount of water-eluted MMA was measured per container using isocratic ultra-fast liquid chromatography (UFLC). Data were analyzed using Student's and Welch's t-test (α=0.05). Results: MMA values below the lower quantification limit (LoQ=5.9 ppm) were registered in B, C, E (PA); E (PB) and B, D, E (QC) procedures, whereas values below the detection limit (LoD=1.96 ppm) were registered in A, D (PA); A, B, C, D (PB); C, D, E (VE) and in all specimens of the control group. A, B (VE) and A, C (QC)procedures yielded values ranging from 6.4 to 13.2 ppm with insignificant differences in material and procedure factors (p>0.05). Conclusions: The cooling procedures may affect the monomer elution from denture base materials. The Ε procedure may be considered a universal cooling procedure compared to the ones proposed by the manufacturers, with the lowest residual monomer elution in water.

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Section: Introductionmentioning

confidence: 99%

The effect of cooling procedures on monomer elution from heat-cured polymethyl methacrylate denture base materials

et al. 2022

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“…One such step is the manufacture of a precise duplicate denture via resin printing based on denture scan data. Use of a duplicate denture has been reported to be an effective fabrication method [7]. However, duplicate denture fabrication is a complicated procedure, and a duplicate denture cannot completely reproduce the morphology of the original denture.…”

Section: Discussionmentioning

confidence: 99%

Effective utilization of digital technology in complete denture fabrication

et al. 2022

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Although digital technology is commonly used in various forms of dental treatment, its application to fabrication of removable dentures is still associated with limitations or challenges, such as the recording of occlusal vertical dimensions and determination of the occlusal plane. Here, a simple and inexpensive technique for fabrication of removable complete dentures, partly aided by digital technology, is proposed.

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“…Depending on the characteristics of the machine, the subtractive cutting movements can be characterized by 3, 4 or 5 degrees of freedom, according to the complexity of the geometries produced. In dentistry, MM is now widely used for the fabrication of prosthetic components in different materials, such as zirconia (ZrO2), cobalt chrome alloy (Co-Cr), titanium (Ti), wax, resin, polymethyl methacrylate (PMMA) or polyetheretherketone (PEEK) 2 .…”

Section: Introductionmentioning

confidence: 99%

Mechanical properties of 3D printed prosthetic materials compared with milled and conventional processing: A systematic review and meta-analysis of in vitro studies

Valenti¹,

Federici

Masciotti

et al. 2024

The Journal of Prosthetic Dentistry

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Mechanical properties of polymethyl methacrylate as a denture base: Conventional versus CAD-CAM resin – A systematic review and meta-analysis of in vitro studies

Cited by 63 publications

References 29 publications

The effect of cooling procedures on monomer elution from heat-cured polymethyl methacrylate denture base materials

The effect of cooling procedures on monomer elution from heat-cured polymethyl methacrylate denture base materials

Effective utilization of digital technology in complete denture fabrication

Mechanical properties of 3D printed prosthetic materials compared with milled and conventional processing: A systematic review and meta-analysis of in vitro studies

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