Is Bleaching safe?
Yes. Provided the bleaching gel is used correctly and in the appropriate concentration.
- Carbamide and hydrogen peroxide do not cause any morphological changes to the tooth enamel when the tooth is healthy and free of decay.
- The increased sensitivity to thermal stimulus (hot or cold) is a transient effect and does not represent a danger to the tooth.
- While there are no adverse effects to the teeth, exposure of soft tissues (gums, lips, oral cavity and digestive system) to the peroxide can lead to severe burns and irritation. This is why it is strongly advisable to ensure that dental bleaching procedures and supply of bleaching gels are carried out by a qualified and registered dental practitioner.
If done correctly and with the correct supervision, dental bleaching is safe.
When is bleaching not recommended?
- In the presence of untreated dental decay, gum and mucosal disease, bleaching is not recommended. Bleaching is safest and most effective when teeth and soft tissues are healthy.
- Bleaching is also contra indicated for pregnant and lactating women.
- Teeth that have been restored with large fillings, crowns or veneers cannot be bleached adequately. While natural tooth enamel can be bleached, the materials used for fillings and the ceramic in crowns and veneers will not change colour. This can result in a discrepancy between the colour of the natural teeth and those that have been restored. It is advised that bleaching is carried out before the placement of crowns and veneers on teeth. If old fillings are present, they might need to be replaced after the bleaching process if a colour discrepancy arises between the bleached enamel and the colour of the filling material.