Background: Composite resins undergo changes in properties due to various oral irritations over time. This study analyzed the effect of semi-nutritious liquids on the shear bond strength of repaired composite with universal bonding Materials and methods: This laboratory experiment used 80 samples of rectangular cubes made of Z250 composite. The samples were subjected to Thermocycling in an incubator and divided into four experi-mental groups, one control group, and stored in different solutions for seven days. After the aging process, the samples were roughened, bonding was applied, and a composite cylinder was placed on the previous composite. The bond strength was then calculated with an Instron device, and the data were analyzed using one-way ANOVA and Bonferroni's post hoc test (α=0.05). Results: Maximum average of bond strength in semi-nutrient liquids was recorded in descending order 25.53MPa for saliva , distilled water (20.24MPa), ethanol (18.04 MPa), citric acid (16.24 MPa), and Hep-tane (9.83 MPa), respectively. Conclusions: Artificial saliva yielded the highest average bond strength, while distilled water, ethanol, citric acid, and heptane resulted in decreasing bond strength. Manuscript profile