Setyowati, L., Setyabudi, S. and Chandra, J. 2018. Surface roughness of nanofilled and nanohybrid composite resins exposed to kretek cigarette smoke. Dental Journal. 51, 1 (Mar. 2018), 37–41. DOI:https://doi.org/10.20473/j.djmkg.v51.i1.p37-41.