Resti Efrata Eka
* Corresponding Author Faculty of Dentistry, Institut Ilmu Kesehatan Bhakti Wiyata Kediri, Kediri, East Java
Magister of Dental Science, Faculty of Dentistry, Universitas Gadjah Mada, Yogyakarta Indonesia
Rini Dharmastiti Department of Mechanical and Industrial Engineering, Faculty of Engineering, Universitas Gadjah Mada, Yogyakarta Indonesia
Widjijono Widjijono Departement of Biomaterials, Faculty of Dentistry, Universitas Gadjah Mada, Yogyakarta Indonesia