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An anatomical study of vascularized iliac bone grafts for dental implantation
Toshiyuki Shimizu1, Kohsuke Ohno, Mitsuhiro Matsuura
1First Department of Oral Anatomy, School of Dentistry, Showa University, Tokyo, Japan.
Purpose:
The purpose of this study was to clarify the anatomical features of vascularized iliac bone grafts used for mandibular reconstruction and dental implantation.
Material And Method:
Twenty-six cadavers were dissected to examine vessels and areas of iliac bone that could be used as pedicles and grafts. The length and diameter of vessels of the vascular pedicle were determined, and the length and depths of the iliac bone were measured with respect to points determined by the relative dimensions of the bone.
Results:
The deep circumflex iliac arteries were classified as double nutrient type (75%), iliac-crest type (19%), or iliacus-muscle type (6%). The mean arterial length was 64+/-15 mm in the double nutrient type. The mean internal diameters at the origin of the deep circumflex iliac artery and vein that could be used for anastomosis were 1.7+/-0.4 mm and 2.1+/-0.7 mm respectively. The greatest mean cross-sectional width and height were 18+/-3 and 42+/-5 mm respectively. The greatest mean cross-sectional cortical thickness at the intermediate line of the iliac crest was 3.4+/-0.8 mm.
Conclusion:
These results should be useful in designing bone grafts for mandibular reconstruction followed by dental implantation.