Interpositional Osteotomy for Posterior Mandible Ridge Augmentation

Exploring CBCT-Based DICOM Files. A Systematic Review on the Properties of Images Used to Evaluate Maxillofacial Bone Grafts

“…Screening yielded 12 citations that potentially met the inclusion criteria, but nine papers were excluded for the following reasons: two papers regarded the possibility of using CBCT in the evaluation of bone surgery, including bone grafts, but without clinical results [15,16]; one paper was in vitro [17]; one paper was based on the fate of the donor area and not the fate of the graft [18]; two papers were based on other techniques to achieve bone augmentation-membrane alone and split-crest technique [19,20]; one paper did not aim at evaluating the outcome of CBCT [21]; and two papers regarded the use of CBCT in the planning of the implant to be inserted in the grafted area, but did not concern the graft itself [22,23].…”

To Graft or Not to Graft? Evidence-Based Guide to Decision Making in Oral Bone Graft Surgery

“…The concept of guided bone regeneration implies the use of cell-occlusive membranes for space provision over a vertical or horizontal defect, promoting the ingrowth of osteogenic cells while preventing migration of undesired cells from the overlying soft tissue (Block & Haggerty, 2009). Space maintenance by various particulate graft materials and the use of resorbable (Figure 2), non-resorbable as well as titanium-reinforced membranes has been described, while no indications regarding the choice of simultaneous vs. delayed implant placement have yet been defined (Chiapasco et al, 2006).…”

“…Mean increase in horizontal and vertical dimensions of 2.6 mm and 3.6 mm, respectively, has been reported (Jensen & Terheyden, 2009) with up to 40% of initial bone gain undergoing resorption thereafter (Chiapasco et al, 2009). Failures are mainly related to premature membrane exposure that has been seen in up to 38% of cases (Block & Haggerty, 2009) and may lead to infection and eventually partial or total loss of regenerated bone.…”

“…Just as distraction osteogenesis, interpositional bone grafts (also known as sandwich grafts) are exclusively used for treatment of vertical defects (Block & Haggerty, 2009). By contrast, the osteotomized bone segment is not distracted but initially secured in its final position using osteosynthesis plates.…”

“…Implants in the anterior maxilla as well as pterygoid implants in the maxillary tuberosity may both be tilted (Figure 6a) to avoid the sinus cavity and allow for greater implant lengths without bone augmentation. Parasinusal tilting may further reduce the length of cantilever segments thus improving biomechanic load distribution (Block & Haggerty, 2009). With guided implant surgery, the placement of tilted implants has become not only easier and less invasive from a surgical point of view (Att et al, 2009) but also more efficient and predictable from the prosthetic viewpoint (Figure 6b).…”