This study investigated the influence of bioactive materials on the dentin surface whitened. Material and Methods: Three bovine teeth were shaped into three dentin wafers. Each wafer was then sectioned, into six dentin slices. One slice from each tooth was distributed into one of 6 groups: 1.CG = control group (distilled water); 2.WT = whitening treatment; 3.WT + MI Paste Plus, applied once a day; 4.WT + Relief ACP30, applied once a day for 30 mintes; 5.WT + Relief ACP60, applied once a day for 60 minutes; 6.WT + Biosilicate ® , applied once a week. All groups were treated over 14 days. Results: CG presented all dentinal tubules occluded by smear layer; WT group was observed all dentinal tubules opened. In the groups 3, 4 and 6, tubules were occluded. Group 5, dentinal tubules were completely occluded by mineral deposits. Conclusion: The use of bioactive materials immediately after whitening treatment can reduce or even avoid the demineralization effect of whitening and avoid exposing dentinal tubules.

Silva BR. Clinical evaluation of hydrogen peroxide in different concentration: shade change and sensibility [dissertation

O presente trabalho realizou uma revisão da literatura utilizando as bases de dados PubMed, MEDLINE, SciELO, LILACs e Google Acadêmico com objetivo de avaliar as reabsorções radiculares relacionadas às técnicas e aos aparelhos ortodônticos, a fim de orientar o cirurgião dentista quanto às complicações inerentes do tratamento ortodôntico. Com relação aos aparelhos, não houve diferença entre os aparelhos ortodônticos convencionais, auto ligados e termoplásticos. A técnica Bioeficiente foi a que apresentou a menor reabsorção radicular em comparação as técnicas Edwise e Straight-Wire. Os incisivos superiores e inferiores são os mais acometidos pelas reabsorções devido a sua anatomia.