Abstract
Background: Consumption of lemon tea as a preventive measure against diseases due to its various benefits. Lemon tea has acidic properties. Nanofiller composite resin is one of the restorative materials, polymer is one of the content of restorative materials, and polymers have unstable bonds so that they can be degraded by acids or low pH. The degradation of polymer components and fillers from restorative materials will affect the roughness of the restoration surface. Methods: The sample amount is 24 nanofiller composite resins soaked in lemon tea. This study was conducted by measuring the roughness level of nanofiller composite resins with surface roughness testers. Result: There was an increase in surface roughness of nanofiller composite resins soaked in lemon tea (p<0.05). Conclusion: There is a roughness effect on the nanofiller composite resin soaked in lemon tea solution for 24, 48, 72, and 96 hours.