Autor(es): Fraga Briso, Andre Luiz [UNESP] ; Rahal, Vanessa [UNESP] ; Azevedo, Fernanda Almeida de [UNESP] ; Gallinari, Marjorie de Oliveira [UNESP] ; Goncalves, Rafael Simoes [UNESP] ; Santos, Paulo Henrique dos [UNESP] ; Angelo Cintra, Luciano Tavares [UNESP]
Data: 2018
Identificador Persistente: http://hdl.handle.net/11449/164173
Origem: Oasisbr
Assunto(s): Dental bleaching; Dentin sensitivity; Oxalates, Peroxides
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Objective: The objective of this study was to evaluate dental sensitivity using visual analogue scale, a Computerized Visual Analogue Scale (CoVAS) and a neurosensory analyzer (TSA II) during at-home bleaching with 10% carbamide peroxide, with and without potassium oxalate. Materials and Methods: Power Bleaching 10% containing potassium oxalate was used on one maxillary hemi-arch of the 25 volunteers, and Opalescence 10% was used on the opposite hemi-arch. Bleaching agents were used daily for 3 weeks. Analysis was performed before treatment, 24 hours later, 7, 14, and 21 days after the start of the treatment, and 7 days after its conclusion. The spontaneous tooth sensitivity was evaluated using the visual analogue scale and the sensitivity caused by a continuous 0 degrees C stimulus was analyzed using CoVAS. The cold sensation threshold was also analyzed using the TSA II. The temperatures obtained were statistically analyzed using ANOVA and Tukey's test (alpha=5%). Results: The data obtained with the other methods were also analyzed. 24 hours, 7 and 14 days before the beginning of the treatment, over 20% of the teeth presented spontaneous sensitivity, the normal condition was restored after the end of the treatment. Regarding the cold sensation temperatures, both products sensitized the teeth (p<0.05) and no differences were detected between the products in each period (p>0.05). In addition, when they were compared using CoVAS, Power Bleaching caused the highest levels of sensitivity in all study periods, with the exception of the 14th day of treatment. Conclusion: We concluded that the bleaching treatment sensitized the teeth and the product with potassium oxalate was not able to modulate tooth sensitivity.
Univ Estadual Paulista, Fac Odontol Aracatuba, Dept Odontol Restauradora, Aracatuba, SP, Brazil
Univ Estadual Paulista, Fac Odontol Aracatuba, Dept Mat Odontol & Protese, Aracatuba, SP, Brazil
Univ Estadual Paulista, Fac Odontol Aracatuba, Dept Odontol Restauradora, Aracatuba, SP, Brazil
Univ Estadual Paulista, Fac Odontol Aracatuba, Dept Mat Odontol & Protese, Aracatuba, SP, Brazil
FAPESP: 2010/11627-6
FAPESP: 2013/07825-5
FAPESP: 2010/17200-4
