title: Immediate provisional restoration of XiVE screw-type implants in the posterior mandible.
abstract: OBJECTIVE
  This prospective study evaluated the clinical outcome of immediately restored screw-type implants for the replacement of mandibular (pre)molars. The results were based on survival, clinical stability and on changes of bone levels from implant placement to delivery of the definitive superstructure 6 months after insertion.
  
  
  METHODS
  In this study, 24 patients were treated according to an immediate loading protocol. Forty XiVE implants were placed in the mandibular (pre)molar regions for single-tooth restoration and the treatment of free-end situations. Radiographic bone levels in relation to implant margins were measured at the time of insertion and recorded. All implants were provided with a transfer coping and restored with provisional crowns within 7 days. After 6 months, the final restorations were fabricated. At this time, survival, Periotest value and radiographic bone levels were assessed.
  
  
  RESULTS
  A total of 40 XiVE implants were placed with an insertion torque value of at least 45 N cm. The median Periotest value 6 months post-insertion was -5 (maximum -2, minimum -7). The mean radiographic coronal bone level at prosthetic delivery was 1.4 mm (SD+/-0.57) compared with 0.47 mm (SD+/-0.37) at the time of insertion. No implant failures were observed up to prosthetic restoration 6 months post-insertion.
  
  
  CONCLUSIONS
  The present data of immediately loaded implants in the posterior mandible are comparable to results with conventional loaded implants. Additional long-term data will be necessary to include this protocol as a standard procedure in our treatment concepts for the edentulous posterior mandible.
authors.affiliation: Department of Oral Surgery and Radiology, School of Dentistry, Medical University Graz, Graz, Austria.
authors.forename: Michael
authors.initials: M
authors.lastname: Payer
authors.forename: Robert
authors.initials: R
authors.lastname: Kirmeier
authors.forename: Norbert
authors.initials: N
authors.lastname: Jakse
authors.forename: Gernot
authors.initials: G
authors.lastname: Wimmer
authors.forename: Walther
authors.initials: W
authors.lastname: Wegscheider
authors.forename: Martin
authors.initials: M
authors.lastname: Lorenzoni
mesh_terms: D000328:Adult; D016301:Alveolar Bone Loss / Q000000981:diagnostic imaging / Q000209:etiology*; D003758:Dental Implantation, Endosseous / Q000379:methods*; D019250:Dental Implants, Single-Tooth; D003794:Dental Restoration, Temporary / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D008336:Mandibular Diseases / Q000000981:diagnostic imaging / Q000209:etiology; D008875:Middle Aged; D011446:Prospective Studies; D011859:Radiography; D013997:Time Factors; D016474:Weight-Bearing