Aim: This study sought to assess microleakage in Class V cavities repaired with compomer, ketac molar and composite. Material a nd Methods : Sixty extracted maxillary and mandibular premolar samples were taken out for orthodontic purposes and included in the in vitro study. With the gingival margin positioned close to the cementoen amel junction (CEJ), a typical wedge shaped defect was created on the buccal surfaces of the teeth. Following restoration with Compomer, Ketac Molar, and Composite, the teeth were thermocyclically processed and split into three groups of twenty teeth each. After that, the teeth were submerged in a 0.5% Rhodamine B solution for 48 hours. After separating the coronal and radicular sections, acrylic resins were used to embed the coronal portion. Next, the mesial and distal portions of the cavity were divided i nto longitudinal sections using acrylic blocks. Using a Confocal Laser Scanning Microscope (CLSM), we examined the slices at 10x magnification for evidence of the degree of dye penetration. Statistical Analysis: A descriptive test, one way ANOVA, and post hoc Tukey test were done for inter group comparison. All statistical levels were made at p<0.001. Result: Composite showed the least microleakage in Class V cavity restoration with a statistically significant difference to compomer and ketac molar. The intergroup comparisons were made at p<0.001. Conclusion: The current study indicated that all three materials exhibit significant microleakage, with Ketac molar exhibiting the highest microleakage, followed by Compomer and Composite.