When hydrofluoric acid contacts enamel during porcelain repair procedures, formation of calcium fluoride occurs, and bond strengths to enamel drop significantly. Therefore, it is vital to treat porcelain and tooth structure separately with appropriate acids. EtchArrest isolates hard and soft tissues when rubber dam placement is not practical.
- Neutralizes acid etchants upon contact
- Protects soft tissues and adjacent restorations
- High contrast against tissues and acid etchants
- Rinses easily