in all investigated individuals: skin, superficial fat, superficial fascia, deep fat, and deep fascia. The thickness of the superficial fatty layer varied highly with smallest values for the lateral neck with 3.71mm ± 0.55 [range, 2.00–5.00mm] and greatest values for the gluteal region with 20.52mm ± 10.07 [range, 6.10–38.40mm]. Influence of BMI and age are presented region specific in Table 2.
Face: Buccal Region (Figures 1–4)
The mean thickness of the superficial fatty layer independent of age or BMI, was in males 4.75 mm ± 0.72 and in females 4.89mm ± 0.97 with P=0.164. In those with a BMI <24.9 kg/m2 the mean thickness was for males/females 4.24mm ± 0.61/4.46mm ± 1.16, whereas it was in those with a BMI of 25.0–29.9kg/m2 5.12mm ± 0.68/5.25 mm ± 0.80 and for those with a BMI >30.0 kg/m2 it was 4.90mm ± 0.58/4.96mm ± 0.73. Increasing BMI values correlated significantly with an increase in superficial fatty layer thickness (rp = 0.395, P<0.001) whereas increasing age correlated significantly with a decrease in its thickness (rp = -0.295, P<0.001). Multifactorial linear regression revealed the following formula to compute the thickness of the superficial fatty layer based on information of age and BMI:
The mean thickness of the superficial fatty layer independent of age or BMI, was in males 4.34 mm ± 0.57 and in females 4.14mm ± 0.69 with P=0.009 In those with a BMI <24.9 kg/m2 the mean thickness was for males/females 4.13mm ± 0.64/3.54mm ± 0.56, whereas it was in those with a BMI of 25.0–29.9kg/m2 4.24mm ± 0.52/4.22 mm ± 0.50 and for those with a BMI >30.0kg/ m2 it was 4.64mm ± 0.39/4.68mm ± 0.45. Increasing BMI values correlated significantly with an increase in superficial fatty layer
Face: Buccal Region (Figures 1–4)
The mean thickness of the superficial fatty layer independent of age or BMI, was in males 4.75 mm ± 0.72 and in females 4.89mm ± 0.97 with P=0.164. In those with a BMI <24.9 kg/m2 the mean thickness was for males/females 4.24mm ± 0.61/4.46mm ± 1.16, whereas it was in those with a BMI of 25.0–29.9kg/m2 5.12mm ± 0.68/5.25 mm ± 0.80 and for those with a BMI >30.0 kg/m2 it was 4.90mm ± 0.58/4.96mm ± 0.73. Increasing BMI values correlated significantly with an increase in superficial fatty layer thickness (rp = 0.395, P<0.001) whereas increasing age correlated significantly with a decrease in its thickness (rp = -0.295, P<0.001). Multifactorial linear regression revealed the following formula to compute the thickness of the superficial fatty layer based on information of age and BMI:
Male: Thickness of superficial fatty layer in mm: 3.619+(0.072*BMI)-(0.018*Age)
Female: Thickness of superficial fatty layer in mm: 3.519+(0.079*BMI)-(0.017*Age)
Face: Premasseteric Region (Figures 1–4) The mean thickness of the superficial fatty layer independent of age or BMI, was in males 4.34 mm ± 0.57 and in females 4.14mm ± 0.69 with P=0.009 In those with a BMI <24.9 kg/m2 the mean thickness was for males/females 4.13mm ± 0.64/3.54mm ± 0.56, whereas it was in those with a BMI of 25.0–29.9kg/m2 4.24mm ± 0.52/4.22 mm ± 0.50 and for those with a BMI >30.0kg/ m2 it was 4.64mm ± 0.39/4.68mm ± 0.45. Increasing BMI values correlated significantly with an increase in superficial fatty layer
thickness (rp = 0.590, P<0.001) whereas increasing age correlated significantly with a decrease in its thickness (rp = -0.426, P<0.001). Multifactorial linear regression revealed the following formula to compute the thickness of the superficial fatty layer based on information of age and BMI:
Lateral Neck (Figure 1 and 3)
The mean thickness of the superficial fatty layer independent of age or BMI, was in males 3.71 mm ± 0.55 and in females 3.71 mm ± 0.55 with P=0.925 In those with a BMI <24.9kg/m2 the mean thickness was for males/females 3.25mm ± 0.36/3.21 mm ± 0.38, whereas it was in those with a BMI of 25.0–29.9kg/m2 3.87mm ± 0.44/3.87 mm ± 0.46 and for those with a BMI >30.0 kg/m2 it was 4.01mm ± 0.53/4.05mm ± 0.40. Increasing BMI values correlated significantly with an increase in superficial fatty layer thickness (rp = 0.615, P<0.001) whereas increasing age correlated significantly with a decrease in its thickness (rp = -0.424, P<0.001). Multifactorial linear regression revealed the following formula to compute the thickness of the superficial fatty layer based on information of age and BMI:
Male: Thickness of superficial fatty layer in mm: 3.901+(0.055*BMI)-(0.024*Age)
Female: Thickness of superficial fatty layer in mm: 1.683+(0.114*BMI)-(0.014*Age)
Lateral Neck (Figure 1 and 3)
The mean thickness of the superficial fatty layer independent of age or BMI, was in males 3.71 mm ± 0.55 and in females 3.71 mm ± 0.55 with P=0.925 In those with a BMI <24.9kg/m2 the mean thickness was for males/females 3.25mm ± 0.36/3.21 mm ± 0.38, whereas it was in those with a BMI of 25.0–29.9kg/m2 3.87mm ± 0.44/3.87 mm ± 0.46 and for those with a BMI >30.0 kg/m2 it was 4.01mm ± 0.53/4.05mm ± 0.40. Increasing BMI values correlated significantly with an increase in superficial fatty layer thickness (rp = 0.615, P<0.001) whereas increasing age correlated significantly with a decrease in its thickness (rp = -0.424, P<0.001). Multifactorial linear regression revealed the following formula to compute the thickness of the superficial fatty layer based on information of age and BMI:
Male: Thickness of superficial fatty layer in mm: 2.723+(0.068*BMI)-(0.019*Age)
Female: Thickness of superficial fatty layer in mm: 2.064+(0.083*BMI)-(0.014*Age)
