In-office teeth whitening services can vary, but this one took about 90 minutes.

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After receiving the professional teeth whitening treatment, I noticed a significant difference in my smile.

My teeth were shinier, brighter, and whiter.

Girl wearing blue bandana outdoors smiling

Photo:Ron Lach/ Pexels

To my surprise, though, my experience was nearly painless.

“It is important to let your dentist know if the sensitivity is persistent throughout the treatment.”

“This will block the sensitivity pathway during and after your whitening procedure,” she says.

Huang advises sticking to what she calls an “all-white diet” to help maintain results.

“If it could stain your shirt, it can stain your newly whitened teeth, too.

“The makeup of the teeth determines their natural color,” she explains.

“The first layer of teeth is called enamel.

Underneath it is dentin which is yellow.

People with thicker enamel will have brighter teeth as the dentin layer will not shine through.

“(All the more reason to learnhow to remineralize your teeth.)

Additionally, keeping up with brushing and flossing daily may help extend results.

When in doubt, though, ask your dentist for guidance, says Huang.

“They can assess all factors and options, and let you know what to expect.”