Porosity in boilable acrylic resin

Area of Science:

• Materials Science
• Biomaterials Engineering
• Polymer Science

Background:

• Heat-processed acrylic resins are standard for dental prostheses.
• Newer boilable acrylic resins offer processing advantages.
• Porosity in acrylic resins can compromise prosthesis integrity and longevity.

Purpose of the Study:

• To compare the porosity of a novel boilable acrylic resin with a conventional heat-processed acrylic resin.
• To evaluate the effect of resin thickness on porosity development in both materials.

Main Methods:

• Acrylic resins were processed according to manufacturer instructions.
• Boilable acrylic resin was processed by boiling for 20 minutes in water.
• Conventional acrylic resin was heat-processed.
• Resin samples of varying thicknesses were analyzed for porosity.

Main Results:

• Conventional acrylic resin exhibited no porosity up to 19.5 mm thickness.
• The boilable acrylic resin developed porosity starting at 6 mm thickness.
• Porosity in the boilable resin increased proportionally with greater thickness.

Conclusions:

• The boilable acrylic resin is prone to porosity, especially at thicknesses of 6 mm and above.
• This boilable resin is not recommended for fabricating long-term prostheses or those requiring significant acrylic resin thickness.
• Further research may be needed to improve the porosity resistance of boilable acrylic resins.