In vitro and in vivo assessment of enamel colour stability in teeth treated with low-viscosity resin infiltration – a literature review

Abstract

Infiltration with a low-viscosity resin is one of the methods of minimally invasive treatment of enamel-induced hypo-mineralisation. It is one of the most modern methods of treatment of white lesions, which can be a bridge between remineralisation therapy and surgical methods. Long-term aesthetic effects of treatment depend on the colour stability of the resin used in this method. It is believed that due to the physical properties of the resin used in the infiltration method, there may be changes in the colour of the surface of the enamel subjected to infiltration. The paper attempts to summarise current reports regarding the colour stability assessment of enamel treated by infiltration with a low-viscosity resin confirmed in in vitro and in vivo studies. The previous results of laboratory tests indicate that the resin used in the infiltration method is susceptible to discolouration of internal and external origin. On the other hand, clinical trials prove that maintaining stable aesthetic effects of infiltration treatment is possible. It is assumed that the extent of discolouration may vary depending on the patient's eating and hygiene habits. Therefore, prophylaxis has a strong impact on the quality of infiltrated surfaces. The aim of the work is to summarise current knowledge on the stability of the colour of the enamel surface treated by resin infiltration, based on a review of the selected literature. The analysis of the literature is also aimed at presenting the methods proposed by clinicians in the event of a change in the colour of the teeth subjected to the infiltration procedure.

Time-dependent effect of intense capsule-coffee and bleaching on the color of resin-infiltrated enamel white spot lesions: anin vitrostudy

“…The staining and color changes of teeth and resin-based restorative materials, especially in the presence of the habitual consumption of certain substances, adversely affect esthetics and therefore influence the clinical lifespan of esthetic restorative treatment ( Araujo et al, 2015 ; Tan et al, 2015 ). Resin-based materials containing tri ethylene glycol dimethacrylate (TEGDMA) monomer are hydrophilic, resulting in higher water absorption rates ( Araujo et al, 2015 ; Ertas et al, 2006 ; Dos Santos et al, 2010 ; Fontes et al, 2009 ; Bagheri, Burrow & Tyas, 2005 ; Polak-Kowalska & Pels, 2019 ). Water is the vessel for moving staining pigments within the resin matrix.…”

“…Therefore, high resin matrix to filler ratios and high water absorption rates would result in a high staining susceptibility ( Hasanain, 2022 ; Bahbishi et al, 2020 ). TEGDMA resins have higher water absorption rates and stainability than other resins, such as Bis-GMA and UDMA ( Araujo et al, 2015 ; Ertas et al, 2006 ; Dos Santos et al, 2010 ; Fontes et al, 2009 ; Bagheri, Burrow & Tyas, 2005 ; Polak-Kowalska & Pels, 2019 ). ICON ® resin infiltration materials contain TEGDMA.…”

Resinas infiltrativas como tratamiento para la fluorosis dental. Una revisión de literatura.

“…A partir de ahí, se han realizado investigaciones con el propósito de introducir materiales al tejido dental. Para el año 2009 (7), en Alemania, la casa comercial Dental Milestones Guaranteed (DMG) lanza al mercado este producto como ICON®, asegurando ser una técnica innovadora para el tratamiento mínimamente invasivo de lesiones que afectan al esmalte dental (6,7).…”

“…Es importante que los materiales empleados para restauraciones estéticas, como en el caso de las resinas infiltrativas, cuenten con una buena estabilidad de color, es decir, la resina mantenga su color en la cavidad oral. Esto se debe a cualidades de baja viscosidad, bajo ángulo de contacto y alto índice de penetración siendo el motivo por el cual la resina infiltrativa obtiene esta propiedad; permitiéndole ingresar a las capas más profundas de la lesión, provocando un taponamiento en la mayoría de los poros y disimulando el aspecto blanquecino que ocasionan las lesiones en esmalte, reflejando una apariencia más natural (1,7).…”

“…Una vez empleada, se espera obtener una superficie lisa ya que proporcionaría una superficie de alta calidad, disminuyendo la adhesión bacteriana y evitando la acumulación de placa. Por el contrario, si se presenta una superficie relativamente rugosa, puede generarse un mayor riesgo de la desmineralización del órgano dentario y conducir al desarrollo de caries secundaria (7,11).…”