Distribusi frekuensi fraktur maksilofasial ditinjau dari usia jenis kelamin dan penyebab di poli bedah mulut RSUPN DR. Cipto Mangunkusumo periode 2010-2012 = Distribution frequency of maxillofacial fractures depend on age gender and etiology in oral surgery department RSUPN DR. Cipto Mangunkusumo from 2010 to 2012