If you clench or grind, discuss it before whitening; enamel wear and exposed dentin can increase level of sensitivity

https://www.mediafire.com/file/zo7z0629rqjvasi/pdf-41016-50270.pdf/file

If you clench or grind, discuss it before whitening; enamel wear and exposed dentin can heighten level of sensitivity, requiring tailored procedures and gentler gels.