Tooth Preparation Options for Ceramic Veneers
No-Prep Veneer Techniques
No-prep veneers require nothing more than roughening the tooth surfaces in order to improve adhesion and conserve enamel for improved bonding. A no prep technique preserves the maximum amount of sound tooth structure and reduces or eliminates tooth sensitivity.
You’ll see improved patient acceptance because the dentist doesn’t have to “drill the teeth,” which many patients find objectionable. The patient does not need to be anesthetized to be treated in most cases. No injections or droopy lips are a real bonus for most people.
One downside is that the aesthetics of these techniques can prove to be less than perfect, especially in profile, because the margins of the veneer are not hidden or wrapped into the interproximal areas. The casual observer may not notice this shortcoming, but it is important for the patient to know what to expect prior to taking this preparation approach.
Minimal-Prep Veneer Techniques
This type of preparation requires minimal anatomic tooth reduction — roughly 0.3 mm in depth, facially — to create space for the veneers without adding bulk to the tooth in the facial or interproximal dimensions. The finish lines of the tooth preparation are located just anterior to the interproximal contacts.
The benefits of minimal-prep veneers include preservation of natural tooth structures and conservation of enamel for improved bonding. The margins of the veneers are virtually unnoticeable because they are hidden in the interproximal areas.
In many cases, anesthesia is not necessary in order to prepare the teeth using these techniques. This option depends on the specific patient and their individual tolerance and comfort levels.