title: A 5-year review of teeth filled with the noninstrumentation technology.
abstract: OBJECTIVE
  The aim of this Case Series was to evaluate the radiographic quality of root fillings performed 5 years previously using the noninstrumentation technology (NIT)-obturation method and to assess radiographically the outcome of these root canal treatments.
  
  
  METHODS
  Seventeen patients requiring root canal treatment participated in this study and were re-evaluated after 5 years. After instrumentation with K-Flexofiles, Calcium-Hydroxide inter-appointment dressing, re-entry and copious irrigation with NaOCl, the teeth were root filled using the NIT.
  
  
  RESULTS
  Immediately after obturation the root fillings were (-0.78 +/- 0.11 mm) short when taking the radiographic apex as a reference point. After 60 months these values were -0.85 +/- 0.11 mm. No statistical difference was found (P > 0.05). In the periapical region, PAI rating 1 and 2 increased from 20.1% to 75.6% after 60 months.
  
  
  CONCLUSIONS
  * This prospective Case Series demonstrated the performance of the NIT-obturation method in vivo. * Root canals filled by the reduced-pressure method using sealer combined with gutta-percha cones showed good radiographic quality. * Periapical healing after 5 years was comparable with conventional filling techniques.
authors.affiliation: Department of Restorative, Preventive and Pediatric Dentistry, University of Bern, School of Dental Medicine, Bern, Switzerland. beat.suter@zmk.unibe.ch
authors.forename: B
authors.initials: B
authors.lastname: Suter
authors.forename: P
authors.initials: P
authors.lastname: Portmann
authors.forename: A
authors.initials: A
authors.lastname: Lussi
mesh_terms: D001729:Bismuth / Q000627:therapeutic use; D002126:Calcium Hydroxide / Q000627:therapeutic use; D003786:Dental Pulp Cavity / Q000000981:diagnostic imaging; D004338:Drug Combinations; D004853:Epoxy Resins / Q000627:therapeutic use; D005500:Follow-Up Studies; D006171:Gutta-Percha / Q000627:therapeutic use; D006801:Humans; D010485:Periapical Periodontitis / Q000628:therapy; D010486:Periapical Tissue / Q000000981:diagnostic imaging; D011446:Prospective Studies; D011671:Pulpitis / Q000628:therapy; D011859:Radiography; D012387:Root Canal Filling Materials / Q000627:therapeutic use; D012388:Root Canal Irrigants / Q000627:therapeutic use; D012389:Root Canal Obturation / Q000379:methods*; D018915:Root Canal Preparation / Q000295:instrumentation / Q000379:methods; D012390:Root Canal Therapy / Q000379:methods*; D012834:Silver / Q000627:therapeutic use; D012973:Sodium Hypochlorite / Q000627:therapeutic use; D013674:Technology, Dental; D014025:Titanium / Q000627:therapeutic use; D019227:Tooth Apex / Q000000981:diagnostic imaging; D016896:Treatment Outcome; D014618:Vacuum; D014732:Vibration; D014945:Wound Healing / Q000502:physiology
chemical_list: D004338:Drug Combinations; D004853:Epoxy Resins; D012387:Root Canal Filling Materials; D012388:Root Canal Irrigants; D012834:Silver; C028044:epoxy resin AH-26; D006171:Gutta-Percha; D014025:Titanium; D012973:Sodium Hypochlorite; D002126:Calcium Hydroxide; D001729:Bismuth