Aini Hariyani Nasution
* Corresponding Author Department of Periodontic, Faculty of Dentistry, Universitas Sumatera Utara, Medan, North Sumatra Indonesia
Lidya Irani Nainggolan Department of Dental Radiology, Faculty of Dentistry, Universitas Sumatera Utara, Medan, North Sumatra Indonesia
Widianto Meydhyono Periodontics Specialty Program, Faculty of Dentistry, Universitas Sumatera Utara, Medan, North Sumatra Indonesia