title: Cortical tenting technique versus onlay layered technique for vertical augmentation of atrophic posterior mandibles: a split-mouth pilot study.
abstract: OBJECTIVE
  This study intended to compare the efficacy of onlay layered and cortical tenting grafting techniques for vertical alveolar augmentation.
  
  
  METHODS
  Six patients with bilaterally edentulous atrophic posterior mandibles received 2 thin ramus blocks, covered with bovine bone mineral on 1 side (onlay layered technique), whereas in the opposite side (cortical tenting technique), a thin ramus block was placed over the ridge keeping a distance that was filled with particulate autogenous bone and bovine bone mineral (50:50). Bone height over the mandibular canal was measured on panoramic radiographies taken preoperatively, and 2 weeks and 4 months postoperatively.
  
  
  RESULTS
  The amount of augmentation in the tenting group (5.2 ± 0.76 mm) was higher than the onlay group (4.48 ± 0.51 mm). Graft resorption was 1.75 ± 1.08 mm in the onlay group and 1.17 ± 0.41 mm in the tenting group. Neither of the differences regarding the amount of augmentation and graft resorption was statistically significant (P = 0.345 and 0831, respectively).
  
  
  CONCLUSIONS
  Both of the examined techniques might be favorable methods for vertical augmentation.
authors.affiliation: *Research Fellow, Dental Research Center, Research Institute of Dental Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran. †Associate Professor and Director of Basic Science Research, Department of Oral and Maxillofacial Surgery, Dental Research Center, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
authors.forename: Golnaz
authors.initials: G
authors.lastname: Morad
authors.forename: Arash
authors.initials: A
authors.lastname: Khojasteh
mesh_terms: D016301:Alveolar Bone Loss / Q000601:surgery*; D000540:Alveolar Ridge Augmentation / Q000379:methods*; D000818:Animals; D002417:Cattle; D003758:Dental Implantation, Endosseous / Q000379:methods; D005260:Female; D006801:Humans; D008297:Male; D008334:Mandible / Q000601:surgery; D008336:Mandibular Diseases / Q000601:surgery*; D008875:Middle Aged; D009066:Mouth, Edentulous / Q000601:surgery; D010865:Pilot Projects; D011862:Radiography, Panoramic; D016896:Treatment Outcome