title: Cone-beam computed tomography for planning and assessing surgical outcomes of osteo-odonto-keratoprosthesis.
abstract: OBJECTIVE
  The aim of this study was to investigate the feasibility and effectiveness of cone-beam computed tomography (CBCT) in the planning, assessment, and follow-up for osteo-odonto-keratoprosthesis (OOKP).
  
  
  METHODS
  Six OOKP patients received a CBCT scan. CBCT scans were performed before and/or between ∼5 and 504 months after the primary OOKP intervention. Preoperative and postoperative results of the CBCT were assessed, regarding the available teeth and to assess the loss of bone in 1 patient, respectively. Resorption of the osteo-odonto-lamina was measured and graded. Five different measurements (I-V) were performed in the coronal and transversal views of CBCT.
  
  
  RESULTS
  Four CBCT scans were performed preoperatively and 4 postoperatively. The follow-up time of the patients is between ∼1 to 528 months. Visualization of the potential donor teeth resulted in accurate 3-dimensional visualization of the tooth-lamina-bone complex. CBCT was found to help in the preoperative decision-making process (diameter of optical implant) and in enabling accurate postoperative evaluation of the bone volume and resorption zones of the OOKP. Loss of bone could be measured in a precise range and showed in the completed cases an average loss of 20.2%.
  
  
  CONCLUSIONS
  The use of CBCT simplifies the preoperative decision making and ordering process. It also helps in determining the postoperative structure and resorption of the prosthesis.
authors.affiliation: *Department of Oral and Cranio-Maxillofacial Surgery, University Hospital Basel, Basel, Switzerland; †Department of Oral Surgery, Oral Radiology and Oral Medicine, School of Dental Medicine, University of Basel, Basel, Switzerland; and ‡Department of Ophthalmology, University Hospital Basel, University of Basel, Basel, Switzerland.
authors.forename: Britt-Isabelle
authors.initials: BI
authors.lastname: Berg
authors.forename: Dorothea
authors.initials: D
authors.lastname: Dagassan-Berndt
authors.forename: David
authors.initials: D
authors.lastname: Goldblum
authors.forename: Christoph
authors.initials: C
authors.lastname: Kunz
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000539:Alveolar Process / Q000637:transplantation*; D001705:Bioprosthesis; D054893:Cone-Beam Computed Tomography; D003316:Corneal Diseases / Q000000981:diagnostic imaging / Q000601:surgery*; D003657:Decision Making; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D017063:Outcome Assessment, Health Care; D011184:Postoperative Period; D057234:Preoperative Period; D019919:Prosthesis Implantation; D013262:Stevens-Johnson Syndrome / Q000000981:diagnostic imaging / Q000601:surgery*; D014092:Tooth Root / Q000637:transplantation*; D055815:Young Adult