B Background: Children in school age, around 6-12 years old are fragile to dental caries. Dental caries are cause mainly from the role of bacteria such as Streptococcus mutans. One of the treatments for dental caries is restorative treatment. Restorative materials that usually used are GIC, compomer and composite. GIC and compomer are used for restoration of deciduous teeth because both contain fluoride. Aim: This study was prepared to know how far the use of children's toothbrush and toothpaste can influence the surface roughness of GIC and compomer. Method: The sized use of samples is 6x3 mm and using 10 samples. Surface roughness measurements on the samples before and after brushing using a children toothbrush and toothpaste for 4 hours with surface roughness tester. Result: There is a significant differences from the results of surface roughness bef ore and after brushing, at sample of GIC p 0,03 and p 0,01 at compomer. Conclusion: There is an influence of brushing activity and abrasiveness in children's toothpaste cause changes for surface roughness of GIC and compomer.