title: Vertical augmentation of the posterior atrophic mandible by interpositional grafts in a split-mouth design: a human tomography evaluation pilot study.
abstract: OBJECTIVE
  Using computed tomography, to compare vertical and volumetric bone augmentation after interposition grafting with bovine bone mineral matrix (GEISTLICH BIO-OSS®) or hydroxyapatite/tricalcium phosphate (STRAUMANN®BONECERAMIC) for atrophic posterior mandible reconstruction through segmental osteotomy.
  
  
  METHODS
  Seven patients received interposition grafts in the posterior mandible for implant rehabilitation. The computed tomography cone beam images were analysed with OsiriX Imaging Software 6.5 (Pixmeo Geneva, Switzerland) in the pre-surgical period (T0), at 15 days post-surgery (T1) and at 180 days post-surgery (T2). The tomographic analysis was performed by a single trained and calibrated radiologist. Descriptive statistics and nonparametric methods were used to analyse the data.
  
  
  RESULTS
  There was a significant difference in vertical and volume augmentation with both biomaterials using the technique (P < 0.05). There were no significant differences (P > 0.05) in volume change of the graft, bone volume augmentation, or augmentation of the maximum linear vertical distance between the two analysed biomaterials.
  
  
  CONCLUSIONS
  The GEISTLICH BIO-OSS®and STRAUMANN®BONECERAMIC interposition grafts exhibited similar and sufficient dimensional stability and volume gain for short implants in the atrophic posterior mandible.
authors.affiliation: Dentistry Department, Pontifical Catholic University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil.
authors.forename: Eduardo Pinheiro
authors.initials: EP
authors.lastname: Domingues
authors.affiliation: Dentistry Department, Pontifical Catholic University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil.
authors.forename: Rafael Fernandes
authors.initials: RF
authors.lastname: Ribeiro
authors.affiliation: Dentistry Department, Pontifical Catholic University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil.
authors.forename: Martinho Campolina Rebello
authors.initials: MCR
authors.lastname: Horta
authors.affiliation: Dentistry Department, Pontifical Catholic University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil.
authors.forename: Flávio Ricardo
authors.initials: FR
authors.lastname: Manzi
authors.affiliation: Dentistry Department, Pontifical Catholic University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil.
authors.forename: Maurício Greco
authors.initials: MG
authors.lastname: Côsso
authors.affiliation: Dentistry Department, Pontifical Catholic University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil.
authors.forename: Elton Gonçalves
authors.initials: EG
authors.lastname: Zenóbio
mesh_terms: D000540:Alveolar Ridge Augmentation / Q000379:methods*; D001284:Atrophy; D018786:Bone Substitutes; D054893:Cone-Beam Computed Tomography; D005260:Female; D006801:Humans; D006882:Hydroxyapatites; D008297:Male; D008334:Mandible / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery*; D008903:Minerals; D010865:Pilot Projects
chemical_list: C077540:Bio-Oss; D018786:Bone Substitutes; C558777:BoneCeramic; D006882:Hydroxyapatites; D008903:Minerals
keywords: CT Imaging; biomaterials; bone regeneration; guided tissue regeneration