Quantitative Sensory Testing of the Effect of Desensitizing Treatment After Dental Bleaching.
The aim of this study was to quantify tooth sensitivity during bleaching and after a desensitizing treatment. Sensitivity was measured with a new device, TSA-II, which uses thermal stimuli for Quantitative Sensory Testing (QST). Ten patients underwent bleaching treatment using Whiteness HP Maxx (FGM Produtos Odontológicos Ltda) containing 35% hydrogen peroxide. After the bleaching session, the teeth were cleaned with air/water spray and the product Desensibilize KF 2% (FGM Produtos Odontológicos Ltda) was applied to the upper left teeth. Saline solution at room temperature was applied in the upper right teeth. QST was performed before bleaching, immediately after bleaching, and immediately after desensitizing treatment. In order to standardize tooth analysis, a 100% ethylene copolymer and vinyl acetate tray with circular perforations was used during measurements. Analysis of variance and the Student's t-test were used (a=0.05). Mean temperatures (SD) of cold sensation threshold for the upper right quadrant were: BB-13.898 (4.81), AB- 19.241 (3.68), AD-20.646 (3.72) and for the upper left quadrant they were: BB-14.102 (3.22), AB-19.646 (4.82), AD- 13.835 (3.63). Dental bleaching with highly concentrated peroxides changed dental cold sensation thresholds, but the topical desensitizer changed the immediate cold sensation thresholds produced by the cold stimulus.
Department of Restorative Dentistry, Araçatuba Dental School, UNESP, Univ. Estadual Paulista, Araçatuba, São Paulo, Brazil. alfbriso@foa.unesp.br.
Vanessa
V
Rahal
Department of Restorative Dentistry, Araçatuba Dental School, UNESP, Univ. Estadual Paulista, Araçatuba, São Paulo, Brazil.
Marjorie O
MO
Gallinari
Department of Restorative Sciences, University of Minnesota, School of Dentistry, Minneapolis, Minnesota, United States of America.
Jorge
J
Perdigão
Department of Restorative Dentistry, Araçatuba Dental School, UNESP, Univ. Estadual Paulista, Araçatuba, São Paulo, Brazil.
Luciano T A
LT
Cintra
Department of Dental Materials and Prosthodontics, Araçatuba Dental School, UNESP, Univ. Estadual Paulista, Araçatuba, São Paulo, Brazil.
Paulo H
PH
dos Santos
Department of Restorative Dentistry, Araçatuba Dental School, UNESP, Univ. Estadual Paulista, Araçatuba, São Paulo, Brazil.
André L F
AL
Briso
D003807:Dentin Sensitivity / Q000139:chemically induced; D006801:Humans; D006861:Hydrogen Peroxide; D010545:Peroxides; D014073:Tooth Bleaching / Q000009:adverse effects; D058205:Tooth Bleaching Agents; D014508:Urea
D010545:Peroxides; D058205:Tooth Bleaching Agents; D014508:Urea; D006861:Hydrogen Peroxide
Clinical Trial; Dentine Sensitivity; Hydrogen Peroxide; Tooth Bleaching