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

https://www.mediafire.com/file/cz9mw6qc46puvp7/pdf-49226-84582.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.