Abstract:
:This study evaluated the effects of combining enamel microabrasion and dental bleaching on the physical properties of enamel, using in vitro and in situ conditions and evaluating surface roughness, enamel microhardness and scanning electron microscopy images. One hundred sound bovine teeth were sectioned and cut into discs and randomly divided into 10 study groups (n=10). The results were submitted to Analysis of Variance (ANOVA) for repeated measures, followed by the Tukey test, with significance at 5%. Enamel surface roughness was significantly influenced by microabrasion, regardless of being combined with dental bleaching, for both HS (Human Saliva) or AS (Artificial Saliva) condition. Enamel microhardness was significantly decreased in the groups in which enamel microabrasion was performed, regardless its combination with dental bleaching; although storage in HS reestablished the initial enamel microhardness. It was concluded that dental bleaching does not cause major damage to microabraided enamel, and that only human saliva recovered the initial enamel microhardness.
journal_name
Dent Mater Jjournal_title
Dental materials journalauthors
Franco LM,Machado LS,Salomão FM,Dos Santos PH,Briso AL,Sundfeld RHdoi
10.4012/dmj.2014-334subject
Has Abstractpub_date
2016-01-01 00:00:00pages
13-20issue
1eissn
0287-4547issn
1881-1361journal_volume
35pub_type
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