J Korean Assoc Oral Maxillofac Surg.  2007 Feb;33(1):28-39.

Comparative histomorphologic study of regenerated bone for dental implant placement in the atrophied posterior maxilla

• Kim SJ
• Kim SM
• Kim JH
• Park YW

Abstract

The purpose of this study is to evaluate the regenerative capacity of reconstruction in the atrophied posterior maxilla by comparing bone graft procedures and alveolar distraction osteogenesis (ADO) techniques. We performed the autogenous iliac bone graft (AGB group, 5 specimens in 3 patients), and the combination (Mixed group, 3 specimens in 3 patients) of the autogenous and deproteinized bovine bone (Bio-Oss(R), Geistlich Co., Switzerland) as the ratio of 2:1 in the sinus floor elevation procedures. ADO procedures using TRACK(R). (KLS Martin Co., Germany) were also performed to augment vertical alveolar height in atrophied posterior maxilla (ADO group, 5 specimens in 4 patients). Newly generated bone tissues were obtained with the 2.0mm diameter trephine bur (3i Co., USA) during implant fixture installation after 5-7 months. Routine histolomorphological observation, immunodot blot assay for quantitative evaluation, and immunohistochemical staining with antibodies to MMP-1, -9, -10, TIMP-1, -2, and BMP-2, -4 were all carried out. Lamellar bone formation was well shown in all specimens and new bone formations of ADO group increased than those of other procedures. In immunohistochemical staining, the strong expression of BMP-2 was shown in all specimens, and immunodot blot assay showed that bone formation is accompanied by the good induction of factors associated with angiogenesis and appeared more increased amount of osteogenic and angiogenic factors in ADO group. ADO is the most effective technique for new bone formation compared to sinus floor elevation with autogenous or mixed bone graft in the atrophied posterior maxilla. In the quantitative immunodot blot assay, the regenerated bone after ADO showed more increased products of VEGF, BMP-2, PCNA and MMP-1 than those after the other procedures, and these findings were able to be confirmed by immunohistochemical stainings.

Keyword

Alveolar distraction osteogenesis (ADO); Autogenous iliac bone graft; Deproteinized bovine bone; Sinus floor elevation; Immunodot blot assay; Immunohistochemical staining

MeSH Terms

Angiogenesis Inducing Agents
Antibodies
Bone and Bones
Dental Implants*
Evaluation Studies as Topic
Maxilla*
Osteogenesis
Osteogenesis, Distraction
Proliferating Cell Nuclear Antigen
Tissue Inhibitor of Metalloproteinase-1
Transplants
Vascular Endothelial Growth Factor A
Angiogenesis Inducing Agents
Antibodies
Dental Implants
Proliferating Cell Nuclear Antigen
Tissue Inhibitor of Metalloproteinase-1
Vascular Endothelial Growth Factor A