Are the white spots on my teeth an allergic reaction?

Q. Are the white spots on my teeth an allergic reaction?

Answered by
Dr. Honey Nandwani
and medically reviewed by Dr.Lekshmipriya B
This is a premium question & answer published on Jan 11, 2018 and last reviewed on: Sep 06, 2023

Hello doctor,

I am a 13-year-old male. I tried this relatively cheap BleachBright StarBright Dual-Action whitening pen. After using it, I noticed white spots forming all over my teeth. It was the weirdest thing. I have always had white spots on and off throughout my life, but after using this, I had a bunch of them appearing within five minutes. Is this an allergic reaction? How do you recommend I get rid of them? Should I consult my dentist? Should I continue using my whitening pen? Of note, I am currently on Guanfacine.



Welcome to

As per your symptoms, the white spots on the teeth are due to hypocalcified areas of poor mineralization. Bleaching makes them more pronounced, and they can further stand out on the teeth. It is not an allergic reaction, but this has happened due to a more clear appearance of hypocalcified areas. The spots will become less pronounced as the days pass, and teeth will continue to hydrate. I suggest not to use your whitening pen further, and for any cosmetic dental treatment, it will be better to consult a cosmetic dentist.

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