Pengaruh stres akademik terhadap kondisi jaringan Periodontal dan kadar Interleukin 1B dalam cairan Krevikular Gingiva : tinjauan pada peserta Program Pendidikan Dokter Gigi Spesialis Fakultas Kedokteran Gigi Universitas Indonesia = Academic stress effect on Periodontal Health Conditions and Interleukin-1B levels in Gingival Fluid Krevikular : overview on participant of Dental Specialist Programme in Faculty of Dentistry, University of Indonesia