Related Experiment Video
Updated: May 11, 2026
Multi-Scale Modification of Metallic Implants With Pore Gradients, Polyelectrolytes and Their Indirect Monitoring In vivo
Published on: July 1, 2013
Influence of curing agent on fibrosis around silicone implants
1Division of Implant Biology, Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Trivandrum, Kerala 695012, India.
This study compared two types of silicone implants—those cured with platinum and those cured with peroxide—to see which causes more fibrosis. The implants were placed in rat muscle for 30 and 90 days. Researchers found that peroxide-cured silicone led to more collagen buildup and fibrosis than platinum-cured silicone. Inflammation levels were similar in the early stages, but fibrosis was more pronounced in peroxide-cured implants. UHMWPE, a standard biocompatible material, served as a control. The results suggest that the curing system used in silicone implants affects how the body responds to them. The authors recommend further research into how material properties influence fibrosis and exploring alternative curing methods to reduce implant complications.
Area of Science:
- Biomaterials in surgical implants
- Tissue engineering and wound healing
- Immunology in implant biocompatibility
Background:
Silicone implants are widely used in reconstructive and cosmetic surgery. However, complications like capsular contracture remain poorly understood. Earlier research has linked immune responses to silicone, but the influence of material properties on fibrosis is less clear. While some studies suggest a role for chemical composition in inflammation, few have examined how curing methods affect tissue reactions. No prior work had resolved how different silicone curing systems might alter collagen accumulation. This gap motivated researchers to compare platinum and peroxide-cured materials. The study aimed to determine if the type of curing system correlates with fibrotic outcomes. No prior work had resolved how silicone curing systems might alter collagen accumulation. The need for better understanding of material-tissue interactions remains unmet.
Purpose Of The Study:
This study aimed to investigate whether the type of curing system used in silicone elastomers influences fibrosis around implants. Researchers compared platinum and peroxide-cured silicone materials to assess their impact on tissue reactions. The goal was to determine if one curing system leads to less fibrosis than the other. The study focused on collagen deposition as a key indicator of fibrosis. Researchers examined how curing systems affect wound healing and inflammatory responses. The study aimed to inform material design in implant manufacturing. No prior work had resolved how silicone curing systems might alter collagen accumulation. The findings could guide the development of less fibrogenic implants.
Main Methods:
The study used commercially available silicone materials cured by platinum and peroxide. These were implanted in rat skeletal muscle for 30 and 90 days. UHMWPE served as a biocompatibility control. Tissue samples were analyzed using hematoxylin-eosin and Masson’s Trichrome stains. Immunohistochemical techniques were used to semi-quantitate collagen and cytokines. Inflammatory cells and myofibroblasts were identified at the material-tissue interface. Researchers compared cellular and fibrotic responses between the two silicone types. The study design allowed for a direct comparison of curing systems’ effects on fibrosis.
Main Results:
Initial wound healing showed similar cellular responses in both platinum and peroxide-cured materials. However, collagen deposition in the proliferative phase was greater around peroxide-cured silicone. Platinum-cured silicone showed less fibrosis compared to peroxide-cured material. Masson’s Trichrome staining revealed higher collagen accumulation in peroxide-cured implants. Immunohistochemical analysis confirmed these differences in fibrotic outcomes. No significant differences were observed in inflammatory cell infiltration. The control material, UHMWPE, showed minimal fibrotic response. These findings suggest that curing systems influence fibrotic outcomes.
Conclusions:
The study found that peroxide-cured silicone elicits a stronger fibrotic response than platinum-cured silicone. These results suggest that curing systems may influence tissue reactions to implants. The authors propose that material properties, not just immunogenicity, affect fibrosis. They suggest further investigation into molecular mechanisms of material-tissue interactions. The findings may inform the development of less fibrogenic implant materials. The authors emphasize the need to explore alternative curing systems. No prior work had resolved how silicone curing systems might alter collagen accumulation. The study highlights the importance of material design in implant biocompatibility.
Frequently Asked Questions
The study found that peroxide-cured silicone leads to greater collagen deposition and fibrosis compared to platinum-cured silicone.
UHMWPE was used as a biocompatibility control to compare the fibrotic responses of the silicone materials.
The proliferative phase is when collagen deposition and fibrosis are most evident, making it critical for assessing fibrotic outcomes.
Inflammatory cells and myofibroblasts were identified using hematoxylin-eosin and Masson’s Trichrome staining.
The comparison helps determine which curing system results in less fibrosis, potentially guiding implant material design.
The authors propose investigating molecular mechanisms of material-tissue interactions and alternative curing systems.
