title: Efficacy of a cone beam computed tomography metal artifact reduction algorithm for the detection of peri-implant fenestrations and dehiscences.
abstract: OBJECTIVE
  To determine whether the use of a metal artifact reduction (MAR) algorithm improves the detection of peri-implant fenestrations and dehiscences on cone beam computed tomography scans.
  
  
  METHODS
  One hundred titanium fixtures were implanted into bovine ribs after the creation of defects simulating fenestrations and dehiscences. Images were acquired using four different protocols, namely, A2 (MAR on, voxel 0.2 mm), A3 (MAR on, voxel 0.3 mm), B2 (MAR off, voxel 0.2 mm), and B3 (MAR off, voxel 0.3 mm). For all protocols, receiver operating characteristic (ROC) curves were determined. Values for the areas under the ROC curves (Az) were subjected to analysis of variance.
  
  
  RESULTS
  Az values were not statistically different among protocols regardless of the defect type (P > .05).
  
  
  CONCLUSIONS
  The MAR algorithm tested by us did not improve the diagnosis of peri-implant fenestrations and dehiscences with use of either the 0.2 mm or the 0.3 mm voxel sizes.
authors.affiliation: Department of Clinical Dentistry, Faculty of Dentistry, Federal University of Espirito Santo, Vitoria, Espirito Santo, Brazil. Electronic address: Sergiolinsv@gmail.com.
authors.forename: Sergio Lins
authors.initials: SL
authors.lastname: de-Azevedo-Vaz
authors.affiliation: Department of Oral Diagnosis, Division of Oral Radiology, Piracicaba Dental School, State University of Campinas, Piracicaba, Sao Paulo, Brazil.
authors.forename: Priscila Dias
authors.initials: PD
authors.lastname: Peyneau
authors.affiliation: Department of Oral Diagnosis, Division of Oral Radiology, Piracicaba Dental School, State University of Campinas, Piracicaba, Sao Paulo, Brazil.
authors.forename: Laura Ricardina
authors.initials: LR
authors.lastname: Ramirez-Sotelo
authors.affiliation: Department of Oral Diagnosis, Division of Oral Radiology, Piracicaba Dental School, State University of Campinas, Piracicaba, Sao Paulo, Brazil.
authors.forename: Karla de Faria
authors.initials: Kde F
authors.lastname: Vasconcelos
authors.affiliation: Department of Oral Radiology, Division of Oral Radiology, School of Dentistry, Federal University of Bahia, Salvador, Bahia, Brazil.
authors.forename: Paulo Sérgio Flores
authors.initials: PS
authors.lastname: Campos
authors.affiliation: Department of Oral Diagnosis, Division of Oral Radiology, Piracicaba Dental School, State University of Campinas, Piracicaba, Sao Paulo, Brazil.
authors.forename: Francisco
authors.initials: F
authors.lastname: Haiter-Neto
mesh_terms: D000465:Algorithms; D000818:Animals; D016477:Artifacts; D002417:Cattle; D054893:Cone-Beam Computed Tomography; D015921:Dental Implants; D004195:Disease Models, Animal; D007089:Image Enhancement / Q000379:methods*; D020007:Implants, Experimental; D008670:Metals; D012272:Ribs / Q000601:surgery*; D013529:Surgical Wound Dehiscence / Q000000981:diagnostic imaging*; D014025:Titanium
chemical_list: D015921:Dental Implants; D008670:Metals; D014025:Titanium