Veneers can be crafted from two primary materials, and each reacts differently to staining. The materials used are porcelain and composite resin, and understanding their characteristics can help you maintain your veneers’ appearance.
Composite Resin Veneers
Composite resin is more prone to staining because its material is highly permeable to strong pigments. Fortunately, stained composite veneers can often be restored.
- Surface Stains: If the stain is superficial, a simple polish can remove it.
- Deeper Stains: For more significant staining, the affected area can be filed down, and new layers of composite resin applied to refresh the veneer’s appearance.
If other veneers nearby also have minor stains, the dentist may recommend re-veneering the surrounding area to ensure the teeth’s colour remains consistent.
Porcelain Veneers
Porcelain veneers, on the other hand, are highly resistant to staining, much more so than composite resin. However, they’re not entirely immune to discolouration over time, especially with prolonged exposure to deeply pigmented substances.
Discolouration in porcelain veneers can occur for several reasons:
- Stained Bonding Agent: The adhesive used to bond the veneer to your natural tooth can sometimes stain, affecting the overall appearance.
- Plaque Build-Up: Without proper cleaning and care, plaque can accumulate on the surface of the veneer, leading to discolouration.
- Trapped Debris: Grooves or scratches on the veneer (if damaged) can trap food particles and debris, contributing to a stained look.
- Underlying Tooth Decay: If the tooth beneath the veneer begins to decay, it may change colour and show through the veneer, making it appear stained.
What Can Stain Veneers?
Certain habits and substances are more likely to contribute to staining, even for high-quality veneers. Here are the main culprits:
Smoking: Tobacco products can leave yellow or brown stains due to harsh chemicals like tar and nicotine.
Tea and Coffee: These beverages contain tannins—natural compounds responsible for their deep brown color—that can seep into the veneer and leave behind yellowish-brown stains.
Red Wine: Like tea and coffee, red wine contains tannins. It also has acidic properties that can weaken the veneer’s surface, making it easier for pigments to penetrate.
Bruxism (Teeth Grinding): Grinding your teeth can wear down veneers, reducing their opacity and making them more vulnerable to staining.