Maxillofacial Silicone Bond Strength to 3D Printing Resins: Study Findings

Posted: September 24, 2025
A recent study delved into the critical aspect of bonding between silicone elastomers and rigid substructures in extraoral maxillofacial prostheses. The research investigated the bond strength of silicone elastomers with various conventional and alternative 3-dimensional printing resin materials, under both standard conditions and after artificial aging. The study, which followed ASTM standards, analyzed the bond strength of seven different resin substructure materials to a maxillofacial silicone, with a total of 70 specimens prepared and tested. Results showed significant impacts of substructure material, artificial aging, and their interaction on peel bond strength, with variations observed among different resin types.

Interestingly, the findings revealed that certain 3-dimensional printed resin materials, such as surgical guide and denture base resins, exhibited notably higher bond strength after artificial aging compared to traditional resin substructures and other 3-dimensional printed materials like polyetherketoneketone and polyetheretherketone. Notably, the study highlighted the prevalence of mixed bond failures, with adhesive and cohesive failures also observed. These results provide valuable insights for dental professionals involved in the fabrication and maintenance of extraoral maxillofacial prostheses, emphasizing the importance of material selection and considering the impact of artificial aging on bond strength.

The implications of this research extend beyond the specific materials tested, shedding light on the complexities of achieving durable bonds between silicone elastomers and various substructure materials in maxillofacial prostheses. Understanding the factors influencing bond strength, including material composition and aging effects, can guide practitioners in optimizing prosthetic outcomes. Further exploration into enhancing bond durability and reliability in clinical settings could lead to improved long-term performance of extraoral prostheses, ultimately benefiting patients requiring these specialized dental interventions.

This article summary was generated by AI. To view the full article, click the link here: https://pubmed.ncbi.nlm.nih.gov/40993624/

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