A novel visible light-curing chitosan-based hydrogel membrane for guided tissue regeneration

Area of Science:

• Biomaterials Science
• Periodontology
• Regenerative Medicine

Background:

• Periodontal disease and trauma lead to tooth-supporting tissue destruction, causing tooth loss and complicating denture restoration.
• Guided tissue regeneration (GTR) utilizes barrier membranes to prevent soft tissue invasion and facilitate bone regeneration.
• Existing GTR membranes face challenges in terms of application and integration.

Purpose of the Study:

• To develop and characterize a novel methacrylated carboxymethyl chitosan (CMCS-MA) hydrogel for use as a barrier membrane in periodontal tissue regeneration.
• To evaluate the physicochemical properties, biocompatibility, and degradation profile of the CMCS-MA hydrogel.
• To assess the potential of tunable properties for optimized periodontal regeneration applications.

Main Methods:

• Formulation of CMCS-MA hydrogel with varying degrees of methacrylic acid substitution (DS).
• Crosslinking of the hydrogel using visible-light irradiation.
• Evaluation of hydrogel properties including light-curing speed, biocompatibility, lysozyme-induced degradation, cytotoxicity, and antibacterial activity.
• Assessment of tunable physicochemical properties based on DS.

Main Results:

• The developed CMCS-MA hydrogel exhibited rapid visible-light crosslinking.
• The hydrogel demonstrated good biocompatibility and was degradable by lysozyme.
• Physicochemical properties, cytotoxicity, and antibacterial activity were adjustable by modifying the DS.
• The material showed potential for tailored applications in periodontal regeneration.

Conclusions:

• Biocompatible and biodegradable CMCS-MA hydrogels can be readily prepared via visible-light crosslinking.
• The tunable properties of CMCS-MA hydrogels make them versatile for periodontal tissue regeneration.
• These hydrogels present a promising, flexible, and convenient option for guided tissue regeneration in dentistry.