Table 6 Descriptive statistics and results of Friedman’s test for comparison between masseter muscle activities (µV) at Rest, maximum intercuspal position (MIP), and centric relation (CR).

Leaf gauge

Right

4.4 (3.5, 15.6) ^C

5 (2.6)

8 (4.2, 17.5) ^A

8.5 (4)

5.6 (3.7, 23.5) ^B

7 (4.4)

< 0.001*

0.416

Left

6.6 (6.1, 10.4) ^C

7.1 (1.1)

9.2 (6.3, 14.1) ^A

9.4 (2.4)

7.8 (6.3, 25.1) ^B

8.9 (3.8)

< 0.001*

0.378

Mean of both sides

6.2 (3.5, 15.6) ^B

6 (2.2)

8.4 (4.2, 17.5) ^A

9 (3.3)

6.8 (3.7, 25.1) ^B

8 (4.2)

< 0.001*

0.264

Lucia jig

Right

4.4 (3.5, 12.5) ^B

4.9 (1.9)

7 (4.2, 24.5) ^A

9.2 (5.8)

5 (3.2, 17.2) ^B

6.2 (3.4)

< 0.001*

0.455

Left

6.9 (5.9, 11.8) ^B

7.3 (1.3)

8.9 (6.1, 19.2) ^A

9.8 (3)

7.3 (5.9, 13) ^B

7.6 (1.4)

< 0.001*

0.418

Mean of both sides

6.1 (3.5, 12.5) ^B

6.1 (2)

8.2 (4.2, 24.5) ^A

9.5 (4.6)

6.7 (3.2, 17.2) ^B

6.9 (2.7)

< 0.001*

0.271

Anterior deprogrammer

Right

4.1 (3.5, 9.2) ^B

4.6 (1.3)

6.4 (3.7, 21.6) ^A

8.5 (4.7)

4.1 (3.3, 9.3) ^B

4.8 (1.6)

< 0.001*

0.453

Left

6.4 (5.8, 11.2) ^B

6.9 (1.4)

10.1 (6.5, 16.6) ^A

10.1 (2.8)

6.7 (6.2, 13.6) ^B

7.3 (1.7)

< 0.001*

0.593

Mean of both sides

6.1 (3.5, 11.2) ^B

5.8 (1.7)

9.1 (3.7, 21.6) ^A

9.3 (3.9)

6.3 (3.3, 13.6) ^B

6.1 (2.1)

< 0.001*

0.336