Why Over-Preparing Teeth Can Increase the Risk of Veneers Falling Off

Porcelain veneers are one of the most transformative cosmetic dental treatments available—but when done incorrectly, they can cause more frustration than confidence. A common issue that patients often experience with poorly done veneers is debonding, or veneers falling off. One of the leading causes? Over-preparation of the natural tooth structure.

At Beverly Hills Dentistry, we frequently see patients who experienced failure from veneers that have been prepared from another provider. In many of these cases, the underlying issue lies in how much of their natural tooth was removed during the original procedure. Over-preparation not only weakens the teeth but also compromises the long-term success and security of the veneer placement.

To prepare a tooth for a veneer, a thin layer of enamel is typically removed from the front surface. This allows the veneer to fit seamlessly without appearing bulky. In experienced hands, this preparation is extremely conservative—preserving as much natural structure as possible.

However, not all providers approach this process with the same finesse or restraint. When an excessive amount of tooth structure is removed, it opens the door to complications like increased sensitivity, structural weakness, and a compromised bond between the veneer and tooth.

The strength of the bond between the veneer and your natural tooth is essential to the longevity of your smile. These restorations rely heavily on enamel for bonding. Once the preparation goes beyond the enamel and into the softer dentin layer beneath, the ability to achieve a durable, lasting bond is significantly reduced.

This lack of strong adhesion can lead to veneers detaching over time—often at the most inconvenient moments. And while adhesives have advanced over the years, there is no substitute for proper planning and conservative preparation.

At Beverly Hills Dentistry, we take a highly personalized and conservative approach to every cosmetic case. Our philosophy is rooted in facially-driven smile makeover and minimally invasive techniques. The goal isn’t just to give you a more beautiful smile—it’s to ensure that your veneers are crafted to last for years without complications.

Our team is known for refining smiles with precision and artistry. Patients from Los Angeles and beyond seek out our expertise, especially in correcting failed veneer work. We see the difference that proper preparation makes every day—and so do our patients.

If you’re considering veneers or facing issues with veneers that have already been placed, it’s critical to work with a specialist who understands the delicate balance of beauty and biology. Over-preparation may be irreversible, but with the right team, there are ways to rebuild and restore your smile safely.