Is My Mouthguard Causing White Spots on My Teeth?

Posted by AllSmiles

Could wearing a mouthguard at night somehow contribute to white spots on my teeth? If the mouthguard is not the cause, what typically leads to this kind of enamel damage?

My dentist says I have incipient caries on four teeth that haven’t affected the dentin yet, so she recommended monitoring the teeth for now although there is some cavitation forming. I noticed the white spots on my teeth, but my dentist thinks it’s too early to treat them.

I’m 34 and this is the first time I’ve had a cavity, so I prefer to take care of the spots rather than watching to see if they progress. I have researched treatments like Curodont, resin infiltration, resin sealants, and silver diamine fluoride. Which option works best for early lesions and is a reliable long-term solution?

How can I manage the white spots? Do you recommend specific products, fluoride treatments, dietary changes, or supplements for strengthening tooth enamel? – Thank you. Jazmin from Las Vegas

 

Jazmin,

A white spot lesion represents the beginning stage of tooth decay. Acids produced by bacteria remove minerals from the enamel, leaving white or chalky spots on teeth.

Initially, the enamel surface remains intact. However, the weakening can spread deeper into the tooth gradually. Once the decay reaches the dentin, the enamel loses support and may eventually form a cavity.

That progression matters because very early lesions may still respond to remineralization, while deeper lesions usually require restoration.

Can Teeth Re-Mineralize Naturally?

The body can sometimes repair early enamel damage naturally. Saliva contains minerals that help strengthen weakened enamel, especially with improved oral hygiene and less acid exposure.

Fluoride can enhance this process by helping enamel absorb minerals more effectively. However, if the enamel surface has already softened or collapsed, remineralization alone will not rebuild the damaged structure.

Therefore, cavitation is concerning. If you can see or feel a depression in the enamel, the tooth likely needs treatment rather than monitoring alone.

Treatments That May Help Early Lesions

You mentioned several modern treatment options, and many of them can help depending on the condition of your teeth. These treatments are generally used when the lesion is confined mostly to the enamel.

Common treatment options include:

• Curodont to encourage remineralization
• Fluoride treatments and prescription fluoride gels
• Resin infiltration to reinforce weakened enamel
• Sealants to protect vulnerable chewing surfaces
• Silver diamine fluoride to stop bacterial activity, although it may stain the treated area

Is Your Mouthguard Causing White Spots on Your Teeth?

Your mouthguard may contribute to decay if you wear it over unclean teeth.  If plaque or food particles remain on the teeth before you insert the mouthguard, bacteria can stay trapped against the enamel for hours. If you brush thoroughly before wearing the appliance, however, the mouthguard should not create decay.

We recommend talking with your dentist about treating the white spots instead of monitoring if cavitation is forming. Additionally, you can consider getting a second opinion.

 

Chandler, Arizona, dentists Dr. William Walden and Dr. Tyrel Beavers sponsor this post. Read why patients think our dentists offer the best dental care in Chandler.