科研之友
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摘要
the objective investigation is to study and analyze the sensibility of the esqueletonization methodology in the alterations of the trabecular bone pattern in digital panoramic radiographies. in order to use this analysis and look changes in the bone density in the trabecular structure in healthy patients and with osteoporosis.the elements analyzed consist in five dry human mandibles. the four studied zones of each mandible were selected in the mandible body under the alveolar bone, studied zones: 1) bucal and anterior to the right mental foramen, 2) bucal and posterior to the right mental foramen, 3) bucal and anterior to the left mental foramen, 4) bucal and posterior to the left mental foramen.we realized the digital panoramic radiographies. after the first radiography we cut the delimited areas removing the buccal cortical plates. we did intentional fractures in the trabecular bone. then we replace the buccal cortical plates and realized the second radiography, using the support created for the mandibles replacement, maintaining the fixed guide lines for each specimen. mid sagital plane, canine line and frankfurt plane.the studied zones were analyzed in the software using the watanabe 2003 method. the studied images that show the trabecular bone squeleton were analyzed using: histogram, particulas analysis, fractal dimension, unions quantity or trabecuialr third union and the trabecular percent.the statistical analysis of the different zones before and after of the renovation and insertion didn%26apos;t show a statistical important difference. the trabecular that the panoramic radiography showed were formed for the insertions in the corticals. the method of take off the cortical bone plates just breaks part inside the mandible body
