title: Bilamina cortical tenting grafting technique for three-dimensional reconstruction of severely atrophic alveolar ridges in anterior maxillae: A 6-year prospective study.
abstract: OBJECTIVE
  To evaluate the efficacy and long-term outcome of the bilaminar cortical tenting grafting technique for reconstruction of vertical and horizontal alveolar ridge defects.
  
  
  METHODS
  A bone block harvested from the lateral aspect of the mandibular ramus was bisected into two cortical laminae, which were then used to reconstruct the buccal and palatal walls of an alveolar ridge defect. The inter-laminar space was filled with particulate autogenous bone and the whole graft was covered with anorganic bone graft and collagen membrane. After 4-6 months, the width and height of the augmentation were recorded. The study sample consisted of 21 patients who were followed up for 6.09 ± 1.18-years.
  
  
  RESULTS
  Vertical and horizontal bone gain was 5.70 ± 1.09 and 8.45 ± 0.87 mm, respectively, and respective resorption rates were 10.20% and 6.15%. One patient showed soft-tissue dehiscence, while all others healed without complication. After an average follow-up of 6-years, the block grafts were well integrated into the recipient sites and there was only a small reduction in the peri-implant bone level (0.77 ± 0.50 mm).
  
  
  CONCLUSIONS
  This technique was effective and reliable for three-dimensional reconstruction of severely atrophic alveolar ridges in anterior maxillae.
authors.affiliation: 4th Dental Department, Peking University School and Hospital of Stomatology, No. 41, Dongsihuanzhonglu, Jiatai Building, Beijing 100081, China.
authors.forename: Huajie
authors.initials: H
authors.lastname: Yu
authors.affiliation: 4th Dental Department, Peking University School and Hospital of Stomatology, No. 41, Dongsihuanzhonglu, Jiatai Building, Beijing 100081, China.
authors.forename: Luo
authors.initials: L
authors.lastname: Chen
authors.affiliation: 4th Dental Department, Peking University School and Hospital of Stomatology, No. 41, Dongsihuanzhonglu, Jiatai Building, Beijing 100081, China.
authors.forename: Yibo
authors.initials: Y
authors.lastname: Zhu
authors.affiliation: 4th Dental Department, Peking University School and Hospital of Stomatology, No. 41, Dongsihuanzhonglu, Jiatai Building, Beijing 100081, China. Electronic address: yuhuajie666@aliyun.com.
authors.forename: Lixin
authors.initials: L
authors.lastname: Qiu
mesh_terms: D000328:Adult; D016301:Alveolar Bone Loss / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery*; D000540:Alveolar Ridge Augmentation / Q000009:adverse effects / Q000379:methods*; D000658:Amoxicillin / Q000627:therapeutic use; D000900:Anti-Bacterial Agents / Q000627:therapeutic use; D000891:Anti-Infective Agents, Local / Q000627:therapeutic use; D001284:Atrophy / Q000601:surgery; D002710:Chlorhexidine / Q000627:therapeutic use; D003758:Dental Implantation, Endosseous / Q000009:adverse effects / Q000379:methods; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008334:Mandible / Q000637:transplantation*; D008437:Maxilla / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery*; D011182:Postoperative Care; D011183:Postoperative Complications; D011862:Radiography, Panoramic; D014182:Transplantation, Autologous; D016896:Treatment Outcome
chemical_list: D000900:Anti-Bacterial Agents; D000891:Anti-Infective Agents, Local; D000658:Amoxicillin; D002710:Chlorhexidine
keywords: Alveolar ridge augmentation; Autogenous bone block; Guided bone regeneration; Split block bone; Tenting technique