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. 2019 Aug 19;14(8):e0221286. doi: 10.1371/journal.pone.0221286

Table 2. Mechanical properties of membranes.

Membranes (RP) (MPa) (Ap) (%) (EP) (k J m3)
Dry BC 16.075 ± 0.721 0.942 ± 0.568 415.949 ± 48.248
Dry BC-HA 6.812 ± 3.229 0.622 ± 0.223 234.205 ± 31.598
Wet BC 23.465 ± 3.756 0.709 ± 0.111 670.067 ± 18.113
Wet BC-HA 7.888 ± 0.396 0.529 ± 0.200 148.875 ± 4.934

Rp: resistance to drilling; Ap: stretching during drilling; Ep: energy in drilling per unit volume.

The presence of hydroxyapatite in both dry and wet membranes revealed significantly less mechanically resistance (lower Rp values) compared to membranes without hydroxyapatite (p <0.0001; Tukey).