title: Reliability of computer designed surgical guides in six implant rehabilitations with two years follow-up.
abstract: OBJECTIVE
  To evaluate the reliability and accuracy of computer-designed surgical guides in osseointegrated oral implant rehabilitation.
  
  
  METHODS
  Six implant rehabilitations, with a total of 17 implants, were completed with computer-designed surgical guides, performed with the master model developed by muco-compressive and muco-static impressions. In the first case, the surgical guide had exclusively mucosal support, in the second case exclusively dental support. For all six cases computer-aided surgical planning was performed by virtual analyses with 3D models obtained by dental scan DICOM data. The accuracy and stability of implant osseointegration over two years post surgery was then evaluated with clinical and radiographic examinations. Radiographic examination, performed with digital acquisitions (RVG - Radio Video graph) and parallel techniques, allowed two-dimensional feedback with a margin of linear error of 10%.
  
  
  RESULTS
  Implant osseointegration was recorded for all the examined rehabilitations. During the clinical and radiographic post-surgical assessments, over the following two years, the peri-implant bone level was found to be stable and without appearance of any complications. The margin of error recorded between pre-operative positions assigned by virtual analysis and the post-surgical digital radiographic observations was as low as 0.2mm.
  
  
  CONCLUSIONS
  Computer-guided implant surgery can be very effective in oral rehabilitations, providing an opportunity for the surgeon: (a) to avoid the necessity of muco-periosteal detachments and then (b) to perform minimally invasive interventions, whenever appropriate, with a flapless approach.
authors: Giordano Dental Office, Caserta, Italy.
authors: Mauro
authors: M
authors: Giordano
authors: Pietro
authors: P
authors: Ausiello
authors: Massimo
authors: M
authors: Martorelli
authors: Roberto
authors: R
authors: Sorrentino
mesh_terms: D017076:Computer-Aided Design; D003759:Dental Implantation, Endosseous, Endodontic / Q000379:methods*; D003761:Dental Impression Technique / Q000295:instrumentation; D017267:Dental Prosthesis Design / Q000379:methods*; D005500:Follow-Up Studies; D006801:Humans; D021621:Imaging, Three-Dimensional; D007575:Jaw, Edentulous / Q000000981:diagnostic imaging / Q000601:surgery*; D007576:Jaw, Edentulous, Partially / Q000000981:diagnostic imaging / Q000601:surgery; D003765:Models, Dental; D011861:Radiography, Dental / Q000379:methods; D025321:Surgery, Computer-Assisted / Q000379:methods*