Abstract
All denture wearers are instructed to maintain optimum oral and denture hygiene for the oral health of the tissues. Chemical cleansing is a simple and commonly used method by most denture wearers as it only requires the immersion of the prosthesis in any commercially available solutions following the manufacturer's instructions. Aim: to report the effect, if any, of commonly available denture cleansers on the colour stability of six denture base materials. Materials and methods: Six types of denture base materials were tested (Self cure resin. Heat cure resin. Deflexthermo injected acrylic, Vertex, IvoBase copolymer and IvoBase Hybrid copolymer) by immersing in three different denture cleansers (Mono-dose sachets, Effervescent denture cleanser and denture cleansing powder) compared to distilled water as the control. All samples were immersed twice a day for 1 Day, 1 Week and 1 Month at 50 degrees C and stored in an incubator in between at 37 degrees C. The change in colour was measured using the colorimeter and colour alteration was determined using the Standard Commission Internationale de L'Eclairage (CIE LAB). Results: there was no significance change in colour in all groups of materials immersed in all solutions at the various immersion times except following immersion of Major heat cure resin in Steradent solution for one month (Delta E >= 3.3). Conclusion: colour change following immersion in commercially available solutions was not detectable by the naked eye.