title: [Profile Orifice Shapers. A valid instrument also for the root canal preparation of short teeth: proposal for a series modification].
abstract: BACKGROUND
  The several endodontic instruments, currently used for the canal preparation with the crown-down technique, simplified only in part root canal therapy, but increased the costs. The authors examined the Profile Orefice Shapers Series, planned only for the preparation of the coronal third, and carried out a comparative analysis with other endodontic instruments currently available.
  
  
  METHODS
  Eighty-seven teeth with a 19 mm work lenght were selected for this study. Endodontic treatment was performed using exclusively Profile Orefice Shapers under constant irrigation with 2.5% sodium hypoclorite to clean and shape the canal and System B and Obtura II to obturate the root canal system.
  
  
  RESULTS
  Postoperative films show an adequate root canal shaping and a complete apical seal. Endodontic therapy was simplified (only 5 instruments to obtain a good canal shaping); clinical time and costs were decreased.
  
  
  CONCLUSIONS
  The authors obtained a good shaping and apical seal using the Profile Orefice Shapers in short teeth. The quality of the root canal therapy obtainable with these instruments is confirmed by radiographs. Some modifications are suggested: increase of instruments working length, introduction of 3 extra intermediate instruments and restriction of working part diameter (1 mm) and operative procedures that lead to obtain an excellent and complete use of these instruments.
authors.affiliation: marelvi@tiscali.it
authors.forename: E M
authors.initials: EM
authors.lastname: Marsico
authors.forename: F
authors.initials: F
authors.lastname: Rao Genovese
mesh_terms: D004202:Disinfectants; D004867:Equipment Design; D006801:Humans; D009811:Odontometry; D011859:Radiography; D012387:Root Canal Filling Materials; D018915:Root Canal Preparation / Q000295:instrumentation*; D012973:Sodium Hypochlorite; D007507:Therapeutic Irrigation; D019553:Tooth, Nonvital / Q000000981:diagnostic imaging
chemical_list: D004202:Disinfectants; D012387:Root Canal Filling Materials; D012973:Sodium Hypochlorite