Preprosthetic orthognathic surgery

Dror M. Allon*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review


The development of rigid internal fixation systems, oscillating and reciprocating microsaws, piezosurgery and distraction osteogenesis devices are all responsible for the high level of predictability and skeletal stability that is associated with modern orthognathic procedures. As a result of teeth loss, physiological masticatory forces are no longer applied to the cancellous alveolar bone by natural teeth periodontal ligament. Surgical guide can be designed and manufactured based upon CT scan of the maxilla at its new position after orthognathic surgery, and bone graft consolidation. In atrophic cases with limited bone contacts orthognathic surgery outcome is less accurate or less stable. Complete diagnosis of maxillary and mandibular dentofacial deformity is made to complement the clinical diagnosis. Clinical and cephalometric diagnosis and Visualized Treatment Objective are integrated to define the required reposition of the maxilla, mandible and chin. Multi-staged prosthognathic is an established treatment for edentulous patients with jaw facial deformity.

Original languageEnglish
Title of host publicationBone Augmentation by Anatomical Region
Subtitle of host publicationTechniques and Decision-Making
Number of pages16
ISBN (Electronic)9781119427926
ISBN (Print)9781119427841
StatePublished - 13 May 2020


  • Dentofacial deformity
  • Distraction osteogenesis device
  • Internal fixation system
  • Multi-staged prosthognathic
  • Orthognathic surgery
  • Piezosurgery


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