Prevalensi posisi akar gigi impaksi molar ketiga mandibula terhadap kanalis mandibularis berdasarkan klasifikasi rood dan shehab (kajian pada radiograf panoramik)
L Latar belakang: Radiografi panoramik merupakan teknik yang memuat gambaranmandibula dan maksila dalam satu gambar untuk melengkapi pemeriksaan klinis gigi.Radiografi panoramik umum digunakan dalam menunjang diagnosis dan rencanaperawatan gigi, salah satunya adalah untuk mengevaluasi impaksi gigi molar ketiga.Gambaran radiografis panoramic dapat memberikan informasi mengenai kedekatanakar gigi molar ketiga mandibula yang terkena impaksi dengan kanalis mandibularis.Akar gigi impaksi molar ketiga dapat dinilai menggunakan klasifikasi Rood danShehab berdasarkan tujuh tanda diagnosis radiografi panoramik. Tujuan: Untukmengetahui prevalensi posisi akar gigi impaksi molar ketiga mandibula terhadapkanalis mandibularis berdasarkan klasifikasi Rood dan Shehab. Metode: Penelitiandeskriptif dengan pendekatan cross sectional. Sampel sebanyak 210 gigi impaksi molarketiga kiri dan kanan mandibula pada 105 data sekunder radiograf panoramik digital diInstalasi Radiologi, RSGM-P FKG Usakti dan dikategorikan menurut tujuh klasifikasiRood dan Shehab. Uji realibilitas interobserver dilakukan menggunakan uji Cohen’sKappa. Data peneitian disajikan dalam bentuk frekuensi dan persentase setiap tipeklasifikasi posisi akar. Hasil: Tipe gigi radiolusen pada akar sebanyak 104 (50%),interupsi garis putih kanalis mandibularis sebanyak 28 (13%), penyempitan kanalismandibularis sebanyak 27 (13%), defleksi akar gigi sebanyak 26 (12%), defleksikanalis mandibularis sebanyak 11 (5%), penyempitan akar sebanyak 8 (4%) dan bifidapeks sebanyak 6 (3%). Kesimpulan: Prevalensi tertinggi posisi akar gigi impaksimolar ketiga adalah tipe radiolusen pada akar dan terendah pada tipe bifid apeks.Kata kunci: Radiografi panoramik, akar gigi impaksi molar ketiga, kanalismandibularis
B Background: Panoramic radiography is technique that includes images of themandible, maxilla in a single image to complement the clinical examination of teeth.Panoramic radiography is technique that includes images of the mandible, maxilla, andsupporting structures in a single image to complement the clinical examination of teeth.Panoramic radiography is frequently employed to assess third molar prevalence,impaction status, and the proximity of impacted mandibular third molars to themandibular canal. Third molar impaction roots were measured based on the Rood andShehab’s approach based on seven diagnostic signs of panoramic radiographs.Objective: This study to determine prevalence of the position of the impactedmandibular third molar roots in relation to the mandibular canal using the rood andshehab’s classification. Methods: Descriptive research with a cross sectional approach.The sample was 210 left and right third molar impaction tooth mandibular on 105secondary data of digital panoramic radiographs at the Radiology Installation, RSGMP FKG Usakti and categorized according to the seven classifications of Rood andShehab. The interobserver reliability test was conducted using Cohen\\\'s Kappa test. Thedata is presented as frequency and percentages for each type of root positionclassification. Results: Radiolucent tooth type on the root was the most prevalent at104 (50%), white line interruption in 28 (13%), narrowing of the mandibular canal in27 (13%), deflection of the tooth root in 26 (12%), deflection of mandibular canal in11 (5%), narrowing of the root in 8 (4%), and bifid apex in 6 (3%). Conclusion: Thehighest prevalence of third molar impaction tooth root position was radiolucent type atthe root and the lowest was bifid apex type.Key words: Panoramic radiography, impacted tooth roots of mandibular thirdmolar, mandibular canal.