Resumo

SILVA, Eliane Mendes da et al. Etiology and prevention of external cervical root resorption associated to teeth bleaching. RSBO (Online) [online]. 2010, vol.7, n.1, pp. 78-89. ISSN 1984-5685.

INTRODUCTION AND OBJECTIVE: Esthetic dentistry has been prioritized and the desire for whiter teeth has been increasingly present in dental offices, since whiter teeth tend to indicate health, beauty, youth and a more attractive smile. Teeth bleaching is a conservative method widely used to restore the original color of darkened teeth. However, possible relations with the external cervical root resorption have concerned many researchers and clinicians. LITERATURE REVIEW: There are many mechanisms that can activate the external cervical root resorption, such as: chemical and physical action of the bleaching materials used, morphology of the cementoenamel junction associated to the immune system, material concentration, traumas and bleaching technique used. CONCLUSION: Therefore, considering many factors that are still not conclusive, preventing deleterious effects on teeth and support structures, care must be taken when choosing bleaching agent and bleaching technique, as well as when selecting each case, beyond a proper restoration after teeth bleaching.

Palavras-chave : bone resorption; root resorption; tooth resorption; teeth bleaching.