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Avaliação da eficácia do branqueamento em consultório com a nova luz híbrida laser de díodo/LED
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Abstract(s)
Objetivo: Avaliar invitro a eficácia do branqueamento em consultório com a utilização de um
novo Laser de díodo/LED
Materiais e Métodos: 20 molares e prémolares seccionados no sentido mesiodistal foram distribuídos aleatoriamente por 4 grupos (n=10) consoante o protocolo a utilizar: Grupo 1 – gel placebo (controlo); Grupo 2luz híbrida LED/Laser Whitening Laser Premium (DMC Equipamentos); Grupo 3 – gel de peróxido de hidrogénio a 6% (Nano White 6% DMC Equipamentos); Grupo 4 Luz híbrida LED/Laser + peróxido de hidrogénio a 6% (Whitening Laser Premium + Nano White 6% DMC Equipamentos). Entre as aplicações do protocolo de branqueamento os espécimes foram armazenados em saliva artificial a 37ºC. A avaliação da
cor foi efetuada através de um espectrofotómetro (SpectroShade™ Micro) em 6 momentos diferentes: T0: antes do branqueamento; T1: 24h após o branqueamento; T2: antes da segunda sessão de branqueamento; T3: 24h após a segunda sessão de branqueamento; T4: uma semana após o branqueamento; T5: 30 dias após a segunda sessão de branqueamento.
Foi aplicada uma análise estatística descritiva e inferencial para um nível de significância de 5% (SPSS26.0).
Resultados: O tempo teve influência significativa nos resultados de variação de cor (p<0,001), contudo, não foi verificada uma interação significativa entre o fator tempo e o fator grupo (p=0,099). Ainda de acordo com os resultados obtidos, podemos inferir que a variação de cor ocorreu na transição entre T1 e T2 (p=0,002), não havendo variações significativas nas transições subsequentes
Conclusões: Apesar das limitações deste estudo conclui-se que a luz testada isoladamente ou em conjugação com o peóxido de hidrogénio a 6% não difere em eficácia dos restantes grupos estudados.
Objectives: To evaluate in vitro the efficacy of an in officebleaching using a new hybrid LED/Laser light. Materials and methods: Twenty healthy molars and premolars were sectioned into two identical halves, resulting in forty specimens. These specimens were divided into four groups: application of a placebo gel (G1); application of the hybrid LED/Laser light (Whitening Laser Premium (DMC Equipamentos) (G2); application of hydrogen peroxide 6% (Nano White 6%DMC Equipamentos) (G3); application of the hybrid LED/ Laser light + hydrogen peroxide 6% (Whitening Laser Premium + Nano White 6% DMC Equipamentos. Each specimen was submitted to a color stability evaluation through the SpectroShadeTM Micro spectrophotometer at six different moments: before the bleaching (T0); 24 hours after the first inoffice bleaching (T1); Before the second inoffice bleaching (T2); 24 hours after the second inoffice bleaching (T3); one week after the second inoffice bleaching (T4); 30 days after the second inoffice bleaching (T5). Descriptive and inferential statistical analysis was applied at a significance level of 5% (SPSS26.0). Results: Time had a significant influence on the results of color variation (p<0.001), however, there was no significant interaction between the time factor and the group factor (p=0.099). Also, according to the results obtained, we can infer that the color variation occurred in the transition between T1 and T2 (p=0.002), with no significant variations in the subsequent transitions. Conclusions: Despite the limitations of this study, it is concluded that the light tested alone or in conjunction with 6% hydrogen peroxide does not differ in efficacy from the other groups studied.
Objectives: To evaluate in vitro the efficacy of an in officebleaching using a new hybrid LED/Laser light. Materials and methods: Twenty healthy molars and premolars were sectioned into two identical halves, resulting in forty specimens. These specimens were divided into four groups: application of a placebo gel (G1); application of the hybrid LED/Laser light (Whitening Laser Premium (DMC Equipamentos) (G2); application of hydrogen peroxide 6% (Nano White 6%DMC Equipamentos) (G3); application of the hybrid LED/ Laser light + hydrogen peroxide 6% (Whitening Laser Premium + Nano White 6% DMC Equipamentos. Each specimen was submitted to a color stability evaluation through the SpectroShadeTM Micro spectrophotometer at six different moments: before the bleaching (T0); 24 hours after the first inoffice bleaching (T1); Before the second inoffice bleaching (T2); 24 hours after the second inoffice bleaching (T3); one week after the second inoffice bleaching (T4); 30 days after the second inoffice bleaching (T5). Descriptive and inferential statistical analysis was applied at a significance level of 5% (SPSS26.0). Results: Time had a significant influence on the results of color variation (p<0.001), however, there was no significant interaction between the time factor and the group factor (p=0.099). Also, according to the results obtained, we can infer that the color variation occurred in the transition between T1 and T2 (p=0.002), with no significant variations in the subsequent transitions. Conclusions: Despite the limitations of this study, it is concluded that the light tested alone or in conjunction with 6% hydrogen peroxide does not differ in efficacy from the other groups studied.
Description
Dissertação para obtenção do grau de Mestre no Instituto Universitário Egas Moniz
Keywords
Branqueamento dentário Peróxido de hidrogénio LED Cor