Direct anterior composite veneers in vital and non-vital teeth: a retrospective clinical evaluation

The mean time of service for the veneers was 3.5 years, with a general survival rate of 80.1%. The annual failure rates (AFR) were 4.9% for veneers in vital teeth and 9.8% for non-vital teeth with statistical significance (p = 0.009). For microfilled and universal veneers the respective AFRs were 6.0% and 6.2% (p > 0.05). Veneers made in non-vital teeth had a higher risk of failure over time compared to those made in vital teeth.