When would tooth whitening be appropriate? Tooth whitening would be appropriate under the following circumstances: You have carried out an appropriate clinical examination to make sure that there are no risk factors or any other oral pathology concerns. Exposure to these products is limited, to make sure that the products are only used as intended in terms of how often and how long they are applied. The products are not directly available to the consumer, but only through a dentist, dental hygienist or dental therapist. Manage Cookie Preferences