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CC BY-NC-ND 4.0 · Eur J Dent 2008; 02(04): 283-290
DOI: 10.1055/s-0039-1697393
Original Article
Dental Investigation Society

Evaluating Mandibular Cortical Index Quantitatively

Fusun Yasar
a   Assistant Professor, Selcuk University, Faculty of Dentistry, Department of Oral Diagnosis and Radiology, Konya, Turkey
,
Faruk Akgunlu
b   Professor, Selcuk University, Faculty of Dentistry, Department of Oral Diagnosis and Radiology, Konya, Turkey
› Author Affiliations
Further Information

Publication History

Publication Date:
27 September 2019 (online)

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ABSTRACT

Objectives: The aim was to assess whether Fractal Dimension and Lacunarity analysis can discriminate patients having different mandibular cortical shape.

Methods: Panoramic radiographs of 52 patients were evaluated for mandibular cortical index. Weighted Kappa between the observations were varying between 0.718-0.805. These radiographs were scanned and converted to binary images. Fractal Dimension and Lacunarity were calculated from the regions where best represents the cortical morphology.

Results: It was found that there were statistically significant difference between the Fractal Dimension and Lacunarity of radiographs which were classified as having Cl 1 and Cl 2 (Fractal Dimension P:0.000; Lacunarity P:0.003); and Cl 1 and Cl 3 cortical morphology (Fractal Dimension P:0.008; Lacunarity P:0.001); but there was no statistically significant difference between Fractal Dimension and Lacunarity of radiographs which were classified as having Cl 2 and Cl 3 cortical morphology (Fractal Dimension P:1.000; Lacunarity P:0.758).

Conclusions: FD and L can differentiate Cl 1 mandibular cortical shape from both Cl 2 and Cl 3 mandibular cortical shape but cannot differentiate Cl 2 from Cl 3 mandibular cortical shape on panoramic radiographs. (Eur J Dent 2008;2:283-290)

Key Words:

Mandibular cortical index - Panoramic radiography - Fractal Dimension - Lacunarity - Digital image analysis
 

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