Vertical Guided Bone Regeneration With Bioabsorbable Barriers

Abstract

Slow-resorption collagen membranes have the potential to promote vertical ridge augmentation when used with autogenous bone at the time of implant placement.

Randomized controlled trial on lateral augmentation using two collagen membranes: morphometric results on mineralized tissue compound

“…Morphometric assessment of outcomes in bone augmentation in terms of volume gain has been the topic for in vitro and clinical studies (Kohles, et al, 2000;Llambes et al, 2007;Proussaefs & Lozada 2005;Proussaefs, et al, 2002;Studer, et al, 1997;Tai et al, 2000;Windisch, et al, 2007). Our group introduced a method to perform morphometric measurements on casts obtained from impressions of the residual alveolar ridge taken during surgery and of the post-augmented ridge taken during re-entry (Pitaru, et al, 2006).…”

The Effect of Bone Formation with Bio-Oss Guided by Collagen Membrane

“…The absorbable collagen membrane used in this study can be completely degraded in the host and there is no needing for removing the absorbable collagen membrane. Compared with the non-absorbable membrane, the absorbable collagen membrane can maintain barrier function for at least 4-6 months to provide the sufficient time for new bone formation and was an ideal membrane material 13) . As Bio-OssR which was used to fill the left space under the membrane and had similar chemical composition and physical structure to natural bones, osteogenic cells can recognize and adhere to Bio-OssR biological apatite surface [14][15] .…”

Preparation and characterization of chitosan/β-GP membranes for guided bone regeneration

“…The main characteristic IR bands observed for pure CS were as follows: the broad band centered at 3454 cm -1 was assigned to the N-H stretch, which overlaps the O-H stretch in the same region; the C＝O stretch at 1653 cm -1 was assigned to amide I; the N-H deformation at 1601 cm -1 was assigned to amide II; the C-CH 3 symmetric deformation appeared at around 1383 cm -1 ; and the C-O stretch appeared at 1156, 1088 and 1031 cm -1 [23] (Fig.4a). The characteristic IR bands ofβ-GP showed in the following regions: the broad band centered at 3470 cm -1 was the O-H stretch, and the typical bands of the inorganic phase for the PO 4 3-groups showed as the v 1 v 3 mode at 900-1200 cm -1 and the v 4 mode at 500-700 cm -1 (Fig.4b). Through comparison of these IR spectra, it can be seen that the specific peaks of pure CS changed on the spectrum of the CS/β-GP composite membrane (MⅣ) with band-shifts (Fig.4c) 3.2.3 XRD analysis XRD patterns of pure CS and CS/β-GP are shown in Fig.5.…”

“…CS is a semicrystalline polymer, and it had a strong reflection at 2θ＝20.3° with relative weak reflections at 2θ＝11.46° and 36.22°, indicating its degree of crystallinity as shown in Fig.5a. Forβ-GP, the introduction of its -OH and PO 4 3-groups disturbed the crystal domain of CS, so all the peaks of the crystal associated with CS were weakened and broadened (Fig.5b). …”

“…However, non-resorbable membranes, such as titanium and expanded polytetrafluoroethylene (e-PTFE), have limitations; they require a second surgical procedure and have a higher risk of exposure. Clinically, such non-resorbable membranes have largely been replaced by bioabsorbable membranes that simplify the surgical procedure [4][5][6] .…”