Sistemas Adesivos e Adesão - Autocondicionantes

Introduction to Adhesive Systems and Adhesion

In this section, the focus is on adhesive systems and adhesion to dentin, specifically highlighting the use of high-conditioning adhesive systems.

Understanding High-Conditioning Adhesive Systems

• Dentin structure post-preparation involves the presence of smear layer within dentinal tubules.

• High-conditioning adhesive systems involve applying a low pH solution to dentin, leading to demineralization as depicted in the figure.

• These systems modify and incorporate the dentin layer instead of removing it, offering advantages such as reduced post-operative sensitivity.

Application Process of Adhesive Systems

This part delves into the application process of adhesive systems, emphasizing steps like primer application and polymerization.

Steps in Applying Adhesive Systems

• After demineralization with primer acid (for two-step high-conditioning), adhesive application follows.

• Polymerization occurs after primer acid infiltration and adhesive application in one step for single-step high-conditioning systems.

Demonstration of Adhesive System Application

The demonstration showcases how adhesive systems are applied, including acid etching on enamel and cavity preparation.

Practical Application Steps

• Acid etching on enamel for 30 seconds precedes cavity preparation with acrylic teeth.

• Post-acid application, thorough water rinsing removes desmineralization by-products before applying the adhesive system uniformly.

Proper Application Techniques for Adhesives

This segment focuses on meticulous techniques required during adhesive application to ensure optimal results.

Key Application Guidelines

• Adequate solvent evaporation post-adhesive application is crucial for successful bonding without dislodging the material.