ABSTRAK Gigi yang sehat tidak cukup hanya rapi dan putih saja tetapi harus didukung oleh gusi, akar, dan tulang pendukung yang sehat. Gigi akan berfungsi dengan baik apabila gigi tersebut dalam keadaan sehat, sebaliknya gigi dan mulut yang tidak sehat akan menimbulkan masalah. Selanjutnya pada SKRT (Survei Kesehatan Rumah Tangga, 2004) prevalensi karies gigi di Indonesia mencapai 90,05%, yang berarti hampir seluruh penduduk Indonesia menderita karies gigi. Penelitian ini bersifat deskriptif dengan menggunakan desain case series, populasi adalah seluruh penderita karies gigi permanen di RSUD. Dr. Hadrianus Sinaga Pangururan Kabupaten Samosir tahun 2008 sebanyak 158 orang dengan sampel adalah total sampling. Ditemukan ditribusi proporsi penderita karies gigi permanen berdasarkan sosiodemografi terbanyak: kelompok umur 20-28 tahun (24,6%), jenis kelamin perempuan (18,3%), daerah asal Kota Pangururan (68,4%), >1 jenis stadium karies (42,4%), >1 tingkat keparahan karies (57,6%), penatalaksanaan medis dengan pencabutan (50,0%), dan sumber biaya dengan Askes (53,8%). Tidak terdapat perbedaan yang bermakna distribusi proporsi umur berdasarkan stadium karies (p=0,552), tidak terdapat perbedaan yang bermakna distribusi proporsi jenis kelamin berdasarkan stadium karies (p=0,796), tidak terdapat perbedaan yang bermakna distribusi proporsi umur berdasarkan tingkat keparahan karies (p=0,552), tidak terdapat perbedaan yang bermakna distribusi proporsi jenis kelamin berdasarkan tingkat keparahan karies (p=1,000). Disarankan untuk memberikan penyuluhan mengenai karies gigi kepada penderita karies gigi oleh dokter gigi yang ada di RSUD. Dr. Hadrianus Sinaga Pangururan Kabupaten Samosir dan pemeriksaan gigi sejak dini melalui UKGS (Usaha Kesehatan Gigi Sekolah) di Sekolahsekolah Dasar kabupaten Samosir. Kata Kunci: Penderita, Karies Gigi Permanen, Karakteristik, RSUD. Dr. Hadrianus Sinaga Pangururan Kabupaten Samosir. Universitas Sumatera Utara ABSTRACT Dental health not enough only neat and white but have to be carried by gum, root, and periodontal membrane healthy. The tooth will function well if its condition is health, on the contrary the tooth and mouth in the condition are bad will create problem. SKRT (Survei Kesehatan Rumah Tangga, 2004) report that dental caries prevalence reach 90,05% mean that almost all of communities have dental caries. This is a descriptive study with case series design. The population were all dental caries of permanent patient in Dr. Hadrianus Sinaga Pangururan General Hospital Samosir at year 2008 counted as 158 person and sample were total sampling. Based on sociodemography, the distribution proportion of dental caries of permanent patients highest proportion were: age group 20-28 years (24,6%), female (18,3%), Pangururan City (68,4%), >1 type of stadium (42,4%), >1 degree of severity (57,6%), extraction treatment ( 50,0%), and cost source with Askes (53,8%). Chi-square analysis result were there is no significant difference between age and caries stadium (p=0,552). Chi-square analysis result were there is no significant difference between sex and caries stadium (p=0,796). Chi-square analysis result were there is no significant difference between age and caries severity (p=0,552). Chi-square analysis result were there is no significant difference between sex and caries stadium (p=1,000). To give information about dental caries disease for both of, patients who come to get dental medication by dentist in Dr. Hadrianus Sinaga Pangururan General Hospital Samosir from childhood with UKGS (The School Dental Health Organization in Primary Schools there are Samosir. Keywords: Patients, Dental Caries of Permanent, Characteristis, Dr. Hadrianus Sinaga Pangururan General Hospital Samosir. Universitas Sumatera Utara