Korean Journal of Oral and Maxillofacial Radiology  2004;34(4):179-183

The influence of X ray beam angulation on the fractal analysis of trabecular architecture in human dry mandible using standardized tile counting method.

Kyung Hee LEE 1 ; Sun Bok LEE ; Chang Hyeon AN ; Min Suk HEO ; Won Jin YI ; Kyung Hoe HUH ; Moo Soon PARK ; Sam Sun LEE ; Soon Chul CHOI

Affiliations

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Keywords

Fractals; Mandible; Radiography, Dental, Digital

Country

Republic of Korea

Language

English

Abstract

PURPOSE: The purpose of this study is to examine the effects of X-ray beam angulation on the fractal dimension of trabecular bone structure of human dry mandible using the tile counting method. MATERIALS AND METHODS: We divided 5 human dry mandibles into an angle and a molar groups depending on the regions and deciding the region of interest (ROI). When contrasted with the ROI, the inferior cortex was appointed to be low and the lines perpendicular to the buccal cortex were appointed to be the standard angle. Direct digital intraoral radiographs were obtained from 9 different projection angles. We analyzed statistically the fractal dimension using the tile counting method. RESULTS: There was a statistically significant difference in the fractal dimension of the regions and the mandibles, but there was no statistically significant difference in the fractal dimension according to the X-ray beam angulation. CONCLUSION: There is no statistically significant effect of the angle of the projection on the fractal dimension of trabecular bone structure of a human dry mandible according to the tile counting method.