Dental Adhesives-Surface Modifications of Dentin Structure for Stable Bonding

Area of Science:

• Dental Materials Science
• Biomaterials Engineering
• Restorative Dentistry

Background:

• Dentin bonding longevity is limited by degradation of the hybrid layer (HL).
• Current research focuses on inhibiting degradation mechanisms within the HL.
• Clinical factors also significantly impact the long-term stability of adhesive restorations.

Purpose of the Study:

• To review recent advancements in dentin bonding aimed at improving interface longevity.
• To explore strategies for impairing degradation mechanisms in the hybrid layer.
• To assess the potential of novel approaches in enhancing dental restoration stability.

Main Methods:

• Review of experimental strategies including protease inhibitors, collagen cross-linkers, and particle-reinforced adhesives.
• Analysis of mechanisms for reducing collagen degradation and nanoleakage.
• Evaluation of factors influencing hybrid layer integrity and adhesive infiltration.

Main Results:

• Protease inhibitors effectively reduce collagen degradation in the hybrid layer.
• Collagen cross-linkers improve adhesive infiltration and inhibit proteases.
• Incorporating particles into adhesives can promote mineralization, reduce nanoleakage, and offer antimicrobial effects.

Conclusions:

• Experimental strategies like protease inhibitors, cross-linkers, and particle additives show significant potential for extending dentin bond longevity.
• These approaches target key degradation pathways within the hybrid layer.
• Despite promising experimental results, clinical factors remain critical for the long-term success of adhesive restorations.