Different techniques have been applied to augment an atrophic posterior mandible, each being associated with different degrees of predictability, advantages and shortcomings.The aim of this study was to assess the treatment of posterior mandibular deficiency using autogenous cortical osteogenic membrane.
Methods:
41 cases of horizontal (n=18, <4 mm bone width) or vertical (n=23,<10 mm bone height) posterior mandibular deficiency were enrolled in this study. Each patient received a lateral ramus cortical block, fixed within a distance of at least 4 mm, filled with particles of a bone substitute. During the first four months patients were controlled for sings of complication.
Results:
At four months, a mean of 3.65 ± 1.70 and 3.90 ± 0.90 bone heightand bone width gain were reported correspondingly. Complication rate during the healing period was as follows: 39% temporary parasthesia, 36.6% inflammation, 36.6% hematoma, 7.3% infection, 9.8% early graft exposure 9.8% delayed graft exposure. No failures of implant were reported during the follow up period (11 to 52 months).
Conclusions:
Based on the results of this study, the application of a cortical bone graft as a thin osteogenic membrane can increase bone height and bone width of atrophic ridges of posterior mandible.