Department of Dental Materials, Faculty of Dentistry, Universitas Trisakti, Jakarta, Indonesia Indonesia
Eddy Eddy Department of Dental Materials, Faculty of Dentistry, Universitas Trisakti, Jakarta, Indonesia Indonesia
Astri Rinanti Department of Environmental Engineering, Faculty of Landscape Architecture and Environmental Technology, Universitas Trisakti, Indonesia Indonesia
Kunio Ishikawa Department of Biomaterials, Faculty of Dental Science, Kyushu University, Japan Japan