Some individuals are advised to perform teeth whitening with caution as they may be at greater risk of adverse effects.
- Patients with unrealistic expectations
- Allergy to peroxide
- Sensitive teeth
- Cracks in the teeth or exposed dentin
- Defects in the formation of the enamel layer
- Acid corrosion
- Receding gums and yellow roots
- Sensitive gums
- Defective dental fillings or tooth decay
- Peripheral active pathology
- Untreated gum disease
- Pregnant or breastfeeding women
- Children under the age of 16, and according to some researchers, this is due to the large size of the neural canal, which the bleaching process can cause irritation or increase the sensitivity of the nerve. 23]
- People with lab fillings or crowns. Teeth whitening does not change the color of fillings and other restorative materials. It does not affect porcelain, ceramic or gold teeth. However, it can slightly affect fillings made of composite materials, cement and amalgam that are present in the teeth. Other options to deal with such cases are porcelain veneers or dental prostheses
- Poor oral hygiene
