When upper teeth don’t reveal themselves enough in the premolars and 1st molar area (transition to posterior teeth) it creates a shadow effect and smile loses its balance. This effect makes the two central teeth overly dominant hence the commonly used expression « bunny teeth ».
In dental esthetics terms, we call it a buccal corridor problem. To solve it, either orthodontics or minimal to no prep porcelain veneers are viable options. Pre-visualization of the design and an intra oral simulation showed a smile rehabilitation that could be safely performed without any orthodontic treatment.