Application of Fractal Analysis in Detecting Trabecular Bone Changes in Periapical Radiograph of Patients with Periodontitis

Table 2

Median (IQR) values of fractal dimension in different regions of interest in study groups.

Fractal dimension	Healthy	Periodontitis			value
		Mild	Moderate	Severe
Apical	1.66 (1.50–1.69)	1.62 (1.54–1.67)	1.52 (1.38–1.62)	1.32 (1.24–1.55)	Healthy vs. mild (0.650)
					Healthy vs. moderate (0.043)
					Healthy vs. severe (<0.001)
Mesial	1.63 (1.59–1.66)	1.60 (1.56–1.64)	1.55 (1.43–1.64)	1.54 (1.42–1.58)	Healthy vs. mild (0.740)
					Healthy vs. moderate (0.035)
					Healthy vs. severe (0.001)
Distal	1.60 (1.55–1.63)	1.57 (1.51–1.61)	1.58 (1.53–1.59)	1.42 (1.36–1.56)	Healthy vs. mild (0.210)
					Healthy vs. moderate (0.280)
					Healthy vs. severe (<0.001)

Statistical significance.