title: "Sandwich" bone augmentation technique: rationale and report of pilot cases.
abstract: The aim of this article is to present a new technique for augmentation of deficient alveolar ridges and/or correction of osseous defects around dental implants. Current knowledge regarding bone augmentation for treatment of osseous defects prior to and in combination with dental implant placement is critically appraised. The "sandwich" bone augmentation technique is demonstrated step by step. Five pilot cases with implant dehiscence defects averaging 10.5 mm were treated with the technique. At 6 months, the sites were uncovered, and complete defect fill was noted in all cases. Results from this pilot case study indicated that the sandwich bone augmentation technique appears to enhance the outcomes of bone augmentation by using the positive properties of each applied material (autograft, DFDBA, hydroxyapatite, and collagen membrane). Future clinical trials for comparison of this approach with other bone augmentation techniques and histologic evaluation of the outcomes are needed to validate these findings.
authors.affiliation: Department of Periodontics/Prevention/Geriatrics, School of Dentistry, University of Michigan, 1011 North University Avenue, Ann Arbor, Michigan 48109-1078, USA. homlay@umich.edu
authors.forename: Hom-Lay
authors.initials: HL
authors.lastname: Wang
authors.forename: Carl
authors.initials: C
authors.lastname: Misch
authors.forename: Rodrigo F
authors.initials: RF
authors.lastname: Neiva
mesh_terms: D000328:Adult; D016301:Alveolar Bone Loss / Q000601:surgery; D000540:Alveolar Ridge Augmentation / Q000379:methods*; D001672:Biocompatible Materials / Q000627:therapeutic use; D001861:Bone Regeneration / Q000502:physiology; D018786:Bone Substitutes / Q000627:therapeutic use; D016025:Bone Transplantation; D003094:Collagen; D015921:Dental Implants; D017886:Durapatite / Q000627:therapeutic use; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008567:Membranes, Artificial; D008875:Middle Aged; D010865:Pilot Projects; D013529:Surgical Wound Dehiscence / Q000601:surgery; D016896:Treatment Outcome
chemical_list: D001672:Biocompatible Materials; D018786:Bone Substitutes; D015921:Dental Implants; D008567:Membranes, Artificial; D003094:Collagen; D017886:Durapatite