Ultrathin ceramic veneers in the aesthetic zone: A 36-month retrospective case series

The study sample was formed by 49 patients who received a total of 194 veneers.
Twelve veneers were prep, 125 were min-prep, and 57 were no-prep.
Total fracture occurrence was 9.8% in 13 participants.
No fractures were observed in prep veneers, while 16 out of 125 min-prep and 3 out of 57 no-prep veneers had fractures.
Most fractures (13 out of 19) occurred early, within the first 12 months after bonding.

Out of 194 veneers, only 1 had a catastrophic failure (0.5%), 3 had large (≥ 1 mm) chippings (1.5%), and 15 had minor (< 1 mm) chippings (7.7%).
A generalized estimating equation model revealed that the odds of veneer fracture were significantly higher in men (odds ratio [OR]= 11.29), in patients who exhibited tooth wear at baseline (OR= 5.54), and in central (OR= 13.56) and lateral (OR= 10.43) incisors compared to canines and premolars.

All participants indicated that they would not change to a different restorative protocol in order to have a thicker restoration and possibly less risk of fracture.

Ultrathin ceramic veneers are a viable cosmetic dentistry treatment option that involve minimal or no tooth preparation. However, a tendency for increased early fractures was observed in the min-prep group