title: Determining the working length for root canal preparations by means of digital radiography.
authors.affiliation: Dr.Helmut.Kassak@T-online.de
authors.forename: H
authors.initials: H
authors.lastname: Kassak
mesh_terms: D002138:Calibration; D003287:Contrast Media; D003786:Dental Pulp Cavity / Q000033:anatomy & histology / Q000000981:diagnostic imaging*; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods; D009811:Odontometry; D011856:Radiographic Image Enhancement / Q000379:methods*; D018915:Root Canal Preparation / Q000295:instrumentation / Q000379:methods*
chemical_list: D003287:Contrast Media