Purpose <p>Optical properties of recent aesthetic restorative materials must maintain an acceptable appearance throughout their functional lifetime. This study aimed to assess the changes in translucency and colour of recent resin-based restorative materials after exposure to beverages commonly consumed by children.</p> Methods <p>An experimental in-vitro study on 48 discs specimens prepared from; Group I: Filtek Z250 XT (Nanohybrid), Group II: Cention N (Alkasite bulkfill), and Group III: SDR flow Plus (Flowable bulkfill). The prepared disc specimens were randomly assigned into 4 subgroups (<i>n</i> = 12) according to the immersion solution: Subgroup A (control): distilled water, B: Coca-Cola, C: chocolate milk, and D: Orange juice. Translucency and colour measurements were done before immersion (baseline) and on day 30 of exposure. Statistical analysis involved Two Way Repeated Measures ANOVA and Kruskal–Wallis test.</p> Results <p>The statistical analysis revealed that the restorative material, immersion time, and immersion solution had a significant effect on the change in translucency (<i>p</i> &lt; 0.0001*, <i>p</i> &lt; 0.0001*, <i>p</i> = 0.001*, respectively). Regarding colour changes, different immersion solutions had a statistically significant effect on Filtek Z250 XT and Cention N (<i>p</i> &lt; 0.0001*). Distilled water and Coca-Cola were found to have a significant effect on colour change for all restorative materials investigated (<i>p</i> &lt; 0.0001*, <i>p</i> = 0.003*).</p> Conclusion <p>the optical properties of resin-based restorative materials used in paediatric dentistry were notably affected by prolonged exposure to beverages commonly consumed by children.</p>