Vertical ridge augmentation of the atrophic posterior mandible with interpositional bloc grafts: bone from the iliac crest vs. bovine anorganic bone. Clinical and histological results up to one year after loading from a randomized‐controlled clinical trial

Abstract

Both procedures achieved good results, but the use of bovine blocs was less invasive and may be preferable than harvesting bone from the iliac crest.

The Efficacy of Horizontal and Vertical Bone Augmentation Procedures for Dental Implants: A Cochrane Systematic Review

“…Nine trials had a parallel group study design and four had a split-mouth design [15,18,26,27]. One study included one patient treated bilaterally, and only data from a randomly selected side were included in this review [3].…”

“…For six trials it was declared that support was received from industry directly involved in the product being tested also in the form of free material [14,15,22,26,27,33]. One trial received support from the implant manufacturer; however, the trial was not designed to test the implants, but the augmentation techniques [23].…”

“…Patient preference including aesthetics (only in • split-mouth trials) [15]. Bone gain vertically or horizontally or both expressed • in mm or percentage including bone level changes over time: vertical bone gain was measured in mm by direct measurement in seven studies [3,7,8,15,16,18,23]. Peri-implant marginal bone level changes were assessed in five trials (7,8,15,16,22), but in three trials (16,25,33) data were presented in a way we could not use.…”

“…All patients were rehabilitated with partial provisional prostheses for 14-16 months until definitive prostheses were delivered. Autogenous inlay bone grafts harvested from the • iliac crest vs. blocks of anorganic bovine bone (BioOss ® , Geistlich Pharma AG, Wolhusen, Switserland) for vertically augmenting deficient posterior mandibles [15]. Patients were grafted with a two-stage approach: first a monocortical bone block was interposed between the basal bone and an osteotomised segment raised coronally without flap elevation at the lingual side to preserve blood supply and fixed with titanium miniplates and miniscrews (KLS Martin, Tuttlingen, Germany) and covered with a resorbable barrier (Bio-Gide ® , Geistlich Pharma AG).…”

“…We could not use the data of one trial since they were not presented by study groups [22]. Patient preference including aesthetics (only in • split-mouth trials) [15]. Bone gain vertically or horizontally or both expressed • in mm or percentage including bone level changes over time: vertical bone gain was measured in mm by direct measurement in seven studies [3,7,8,15,16,18,23].…”