Yes, whitening toothpastes can cause tooth sensitivity. The active ingredient, usually hydrogen peroxide, is linked to increased tooth sensitivity and mild gingival irritation, with the degree of sensitivity related to both the concentration of peroxide and the duration of use [1][4]. Additionally, whitening agents can create small defects and subsurface pores in the teeth, leading to discomfort, especially with hot or cold products [3][1]. While this sensitivity is typically short-term and not permanent, those experiencing continued discomfort should consult a dental professional [4].

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