Oral and Maxillofacial Surgery Commons^™

An Immediate Implant Stability And Pull-Out Study Comparing Two Different Surgical Techniques : Conventional Drilling Versus Trabecular Compaction : A Pilot Study, Yong Chang Choi

Loma Linda University Electronic Theses, Dissertations & Projects

Poor bone quality at an implant site and the lack of initial implant immobilization are considered the two main factors for first stage implant failure. Modalities are needed to improve the initial stability of implants in poor bone quality situations. The purpose of this study was to compare the immediate implant stability and the pull-out force of implants placed in fresh frozen human alveolar jaw bones by two different surgical techniques: 1) a conventional drilling technique and 2) a trabecular compaction technique. The initial lateral stability (assessed by Periotest values, PTVs), the uniaxial pull-out force (measured by Instron machine) and …

Periodontal Repair In Dogs : Evaluation Of Rhbmp-2 Carriers, Lauralee Nygaard

Loma Linda University Electronic Theses, Dissertations & Projects

This study evaluated candidate carriers for recombinant human bone morphogenic protein-2 (rhBMP-2) in periodontal reconstructive surgery.

Canine demineralized bone matrix (DBM), bovine inorganic crystallene bone matrix (Bio-Oss), bovine derived microfibrillar collagen matrix (Helistat), poly (D,L-lactide-coglycolide) micropaiticles (PLGA), and polylactic acid granules (Drilac) were used with rhBMP-2 (20 (µg/100 µl implant volume) in routine critical size canine supraalveolar periodontal defects. Contralateral defects in six beagle dogs were randomly assigned to receive: DBM/rhBMP-2, DBM-control, Bio-Oss/rhBMP-2, Helistat/rhBMP-2, PLGA/rhBMP-2, or Drilac/rhBMP-2, all with autologous blood except for Helistat and PLGA. Animals were sacrificed eight weeks post-surgery and block sections of the defects were processed …