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Influence of thermal pain threshold in the occurrence of sensitivity in dental bleaching

Grant number: 10/11627-6
Support Opportunities:Regular Research Grants
Start date: December 01, 2010
End date: November 30, 2012
Field of knowledge:Health Sciences - Dentistry
Principal Investigator:André Luiz Fraga Briso
Grantee:André Luiz Fraga Briso
Host Institution: Faculdade de Odontologia (FOA). Universidade Estadual Paulista (UNESP). Campus de Araçatuba. Araçatuba , SP, Brazil
Associated researchers:Paulo Henrique dos Santos

Abstract

The present study will verify the occurrence of dental sensitivity in patients submitted to bleaching procedures using a 35% hydrogen peroxide (HP), considering physiological pain threshold. Thus, 60 volunteers will be divided into 4 study groups (n=15), according to their pain threshold (low and high) and bleaching treatment (HP and placebo). Physiological pain threshold will be determined using a neuro sensory analyzer, the TSA-II (Medoc Advanced Medical Systems, Durham, NC), that delivers thermal stimuli from a central unit with a thermode. Bleaching procedures using HP will be performed in groups I (low pain threshold) and II (high pain threshold). Thus, there will be three 15-minute applications, in a 7-day interval, during 3 weeks, totalizing three bleaching sessions for both groups. On the other hand, patients from group III (low pain threshold) and IV (high pain threshold), negative controls, will be submitted to a placebo product, identical to 35% HP. Dental sensitivity measurements will be performed in 16 different times: before dental bleaching, in the end of each product application, 1 and 24 hours after each bleaching session and 7 days after bleaching procedures. For this purpose, TSA-II will be attached to an intra-oral device, positioned in the buccal surface of the superior incisives. Phisiological pain threshold will be measured in the same study times. Obtained data will be statistically analysed in a 5% significance level. (AU)

Articles published in Agência FAPESP Newsletter about the research grant:
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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
VANESSA RAHAL; MARJORIE DE OLIVEIRA GALLINARI; JULIANA STUGINSKI BARBOSA; REYNALDO LEITE MARTINS-JUNIOR; PAULO HENRIQUE DOS SANTOS; LUCIANO TAVARES ANGELO CINTRA; ANDRÉ LUIZ FRAGA BRISO. Influence of skin cold sensation threshold in the occurrence of dental sensitivity during dental bleaching: a placebo controlled clinical trial. Journal of Applied Oral Science, v. 26, . (10/11627-6)
ANDRÉ LUIZ FRAGA BRISO; VANESSA RAHAL; FERNANDA ALMEIDA DE AZEVEDO; MARJORIE DE OLIVEIRA GALLINARI; RAFAEL SIMÕES GONÇALVES; SANDRA MEIRA BORGHI FRASCINO; PAULO HENRIQUE DOS SANTOS; LUCIANO TAVARES ANGELO CINTRA. Neurosensory analysis of tooth sensitivity during at-home dental bleaching: a randomized clinical trial. Journal of Applied Oral Science, v. 26, . (10/17200-4, 10/11627-6)