Effectiveness of Bleaching Techniques in Non-Vital Teeth: Literature Review

Abstract

Due to the appreciation of aesthetic dentistry, patients and professionals have been seeking treatments that favor the naturalness and harmony of teeth. Thus, tooth whitening has been a preferred choice in aesthetic planning, as it presents a minimally invasive treatment for vital, non-vital, discolored or stained teeth. In non-vital teeth, this color change can be the result of pulp necrosis, endodontic materials, filling materials, aging and trauma. Therefore, this literature review aimed to observe the effectiveness of bleaching techniques in non-vital teeth. During data collection, scientific articles published between the years 2000-2020 were selected, arranged in the Virtual Health Library (BVS), Scientific Electronic Library Online (Scielo), Brazilian Bibliography of Dentistry (BBO) and Medical Literature Analysis and Retrievel System Online (Medline), in Portuguese and English. Publications on the subject, prior to the year 2000 and after 2020, indexed in other databases or that do not address the objectives of the study were excluded. The data collected were organized chronologically , and descriptively. For correct execution and choice of internal whitening techniques Walking Bleach, Power Bleaching or Mixed Technique), it is essential to carry out a detailed clinical examination, as well as an assertive diagnosis. power techniques bleaching and walking bleach in pulpless teeth has a good acceptance by patients, where it requires follow-ups for preservation and maintenance of cases. Faced with patients' dissatisfaction with dental darkening, tooth whitening techniques have increasingly participated in aesthetic planning. Thus, after reviewing the literature, research showed the same bleaching capacity in devitalized teeth, using different techniques and materials.