Roper Dental Group



I am so sad about my porcelain veneers. I got them a little over a year ago and they were a dream come true.  My smile was exactly what I wanted.  My problem is I’m getting some dark spots between teeth, almost like a line. Have bonding ruined my teeth?

Terry in Honolulu

Dear Terry,

Porcelain veneers are nice because they cannot only make your smile more beautiful, but they are pretty stain-resistant.  Teeth whitening is not needed or suggested when you have porcelain veneers.

So why are there stains on your porcelain veneers?

There is a glaze that is applied to your new porcelain veneers when they are made. The glaze determines the shine of your teeth so they look natural, not dull.  That glaze is also a big factor in the stain resistance of your veneers. Your teeth shouldn’t stain unless that glaze is somehow compromised. This can happen if your dentist uses a power polishing machine at the office or an inappropriate fluoride treatment.

Do Veneers Stain?

Many people wonder “Do veneers stain?”

Well, yes! Several foods cause stains on teeth. Coffee and juices are just a couple, not to mention how smoking stains your teeth. If your porcelain veneers were absorbing stain because of a problem with the glaze, it would be more across the surface of the tooth, not just in one line between the teeth.

Because of the area of stain you describe, your problem likely is where the veneer meets your tooth. This could be caused by a gap between your tooth and the porcelain veneer that wasn’t bonded well and has allowed the stain to enter there.

It could also be that there was some bonding composite on that line that wasn’t polished well. The stains may just be on that bonding agent. If that’s the case, it’s just a matter of repolishing that area.

In either case, a return visit to the dentist who put on your porcelain veneers would be a good place to start.  Hopefully, it’s just a simple polishing issue. It’s a good idea to schedule regular maintenance appointments for your veneers. It will help maintain their stain resistance and increase their lifespan.

Causes of Black Stains Between Teeth:

Now let’s discuss the causes of black stains between teeth.

The presence of black stains between teeth can be a cause for concern, prompting individuals to seek an understanding of the underlying issues. 

These stains may be attributed to various factors, including the accumulation of plaque and tartar, dental decay, or the consumption of certain foods and beverages that can lead to staining. 

Additionally, black stains may indicate an underlying problem with dental restorations, such as fillings or crowns, or even issues related to oral hygiene.

Preventive Measures and Solutions:

If you want to prevent black or brown stains between teeth, follow these preventive measures.

  • Regular Dental Check-ups:

Schedule routine dental check-ups to ensure that your veneers are in good condition. Your dentist can identify any issues early on and recommend appropriate solutions.

  • Professional Cleaning:

Regular professional cleanings by a dental hygienist can help remove plaque, stains, and debris from the surfaces of veneers and the spaces between teeth.

  • Maintain Good Oral Hygiene:

Brush and floss your teeth regularly to prevent the accumulation of plaque and stains. Pay extra attention to the spaces between veneers and natural teeth.

  • Avoid Staining Substances:

Limit the consumption of foods and beverages known to cause stains. If possible, use a straw to minimize contact between staining substances and your veneers.

  • Address Bonding Issues:

If you suspect bonding issues or notice changes in the appearance of your veneers, consult with your dentist promptly to address any concerns and prevent further complications.


While porcelain veneers are a durable and stain-resistant cosmetic solution, maintaining their pristine appearance requires proper care and attention. Understanding the potential reasons for stains between front teeth with porcelain veneers empowers individuals to take proactive measures for a radiant and enduring smile. 

Regular dental care, good oral hygiene practices, and lifestyle choices can contribute to the long-term success of porcelain veneers, ensuring that your smile remains a source of confidence and satisfaction.

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