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

https://www.mediafire.com/file/0hekbvwv7w56s2a/pdf-14981-99239.pdf/file

If you clench or grind, discuss it before whitening; enamel wear and exposed dentin can increase sensitivity, requiring customized procedures and gentler gels.