Table 2 Failure load, energy at fracture, and stiffness, stratified by treatment group

Fracture load

 Pre-treatment (N)

2065 ± 854

(1492 –2639)

2256 ± 775

(1736 –2777)

-191

(-916 –534)

0.511

 Post-treatment (N)

2291 ± 648

(1855 –2726)

2109 ± 612

(1698 –2520)

182

(-379 –743)

0.743

 Net change (N)

225 ± 765

(-289 –740)

-147 ± 815

(-695 –400)

373

(-331 –1076)

0.375

 p-value*

0.365

0.520

Fracture energy

 Pre-treatment (Nmm)

2729 ± 1416

(1778 –3680)

3104 ± 1502

(2095 –4113)

-375

(-1673 –924)

0.430

 Post-treatment (Nmm)

4199 ± 1421

(3245 –5154)

3819 ± 1343

(2917 –4722)

380

(-850 –1610)

0.577

 Net change (Nmm)

1470 ± 1260

(624 –2317)

716 ± 1673

(-408 –1840)

755

(-563 –2072)

0.270

 p-value*

0.007

0.123

Stiffness

 Pre-treatment (N/mm)

1552 ± 607

(1144 –1960)

1743 ± 631

(1319 –2166)

-190

(-741 –360)

0.365

 Post-treatment (N/mm)

1335 ± 396

(1069 –1601)

1180 ± 332

(957 –1403)

155

(-170 –480)

0.401

 Net change (N/mm)

-217 ± 546

(-584 –150)

-562 ± 604

(-968 – -156)

345

(-167 –857)

0.401

 p-value*

0.320

0.005