Intrapulpal temperature variation during bleaching with various activation mechanisms
J. appl. oral sci
; 17(5): 436-439, Sept.-Oct. 2009. ilus, tab
Article
em En
| LILACS
| ID: lil-531393
Biblioteca responsável:
BR1.1
ABSTRACT
OBJECTIVES:
The aim of this study was to evaluate the intrapulpal temperature variation after bleaching treatment with 35 percent hydrogen peroxide using different sources of activation. MATERIAL ANDMETHODS:
Twenty-four human teeth were sectioned in the mesiodistal direction providing 48 specimens, and were divided into 4 groups (n=12) (G1) Control - Bleaching gel without light activation, (G2) Bleaching gel + halogen light, (G3) Bleaching gel + LED, (G4) Bleaching gel + NdYAG Laser. The temperatures were recorded using a digital thermometer at 4 time points before bleaching gel application, 1 min after bleaching gel application, during activation of the bleaching gel, and after the bleaching agent turned from a dark-red into a clear gel. Data were analyzed statistically by the Dunnet's test, ANOVA and Tukey's test (a=0.05).RESULTS:
The mean intrapulpal temperature values (ºC) in the groups were G1 0.617 ± 0.41; G2 1.800 ± 0.68; G3 0.975 ± 0.51; and G4 4.325 ± 1.09. The mean maximum temperature variation (MTV) values were 1.5ºC (G1), 2.9ºC (G2), 1.7ºC (G3) and 6.9ºC (G4). When comparing the experimental groups to the control group, G3 was not statistically different from G1 (p>0.05), but G2 and G4 presented significantly higher (p<0.05) intrapulpal temperatures and MTV. The three experimental groups differed significantly (p<0.05) from each other.CONCLUSIONS:
The NdYAG laser was the activation method that presented the highest values of intrapulpal temperature variation when compared with LED and halogen light. The group activated by LED light presented the lowest values of temperature variation, which were similar to that of the control group.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
LILACS
Assunto principal:
Clareamento Dental
/
Temperatura Corporal
/
Oxidantes
/
Polpa Dentária
/
Peróxido de Hidrogênio
/
Luz
Limite:
Humans
Idioma:
En
Revista:
J. appl. oral sci
Assunto da revista:
ODONTOLOGIA
Ano de publicação:
2009
Tipo de documento:
Article
País de afiliação:
Brasil
País de publicação:
Brasil