Issue 67

T. Diburov et alii, Frattura ed Integrità Strutturale, 67 (2024) 259-279; DOI: 10.3221/IGF-ESIS.67.19

F i, N

No.

Loaded segment

Maximum equivalent stresses and strains

in the system, MPa

in zygomatic bone, MPa

in zygomatic bone, %

1

4

50

89

67

0.67 1.34 2.02 0.82 1.64 2.46 0.74 1.48 2.23

100 150

178

134

267 (LR)

201 (LL)

2

5

50

88

82

100 150

177

164

265 (LL)

246 (LL)

3

4 and 5 simultaneously

50

80

74

100 150

160

148

240 (LL)

223 (LL)

F i is a load on segment

Table 5: The calculated results for the non-axial loads on the anterior segments of the denture base.

а ) b) Figure 11: The distributions of equivalent stresses at the F (3) non-axial load of 150 N applied on segment 5: a) in the system; b) in bone tissue. Figure 12 shows the displacement fields in the model after loading segment 4 both in the orthogonal direction and at the angle of 45  . The maximum displacement value of 0.95 mm was observed for the non-axial loading conditions, but it was only 0.62 μ m in the second case. In addition, displacements of the zygomatic bones reached greater values of 0.112 mm (right) and 0.122 mm (left) in the first case, but they were 0.083 and 0.078 mm, respectively, for the second loading mode.

а ) b) Figure 12: The distributions of the displacements in the model at the F (3) non-axial load of 150 N applied on segment 4: a) orthogonal loading; b) non-axial loading.

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