## 3 Results
\begin{table}
\begin{tabular}{c c c c c c} \hline \hline
**Group** & **Variables** & **Pre** & **Post** & \(p\) & **ES** \\ \hline \multirow{4}{*}{Awake bruxism with fibromyalgiagia} & JFLS-8 & 17.19 \(\pm\) 12.09 & 3.3 \(\pm\) 3.99 & \textless{}0.001 & 1.54 \\  & GAD-7 & 14.14 \(\pm\) 3.93 & 7.70 \(\pm\) 3.70 & \textless{}0.001 & 1.69 \\  & OHIP-14 & 32.70 \(\pm\) 2.66 & 14 \(\pm\) 7.03 & \textless{}0.001 & 3.52 \\  & WHO-5 & 5.19 \(\pm\) 2.66 & 8.84 \(\pm\) 3.62 & \textless{}0.001 & 1.15 \\  & PSQI & 15.81 \(\pm\) 2.37 & 11.11 \(\pm\) 2.31 & \textless{}0.001 & 2.01 \\ \hline \multirow{4}{*}{Sleep bruxism with fibromyalgiagia} & JFLS-8 & 18.13 \(\pm\) 11.85 & 3.11 \(\pm\) 3.70 & \textless{}0.001 & 1.71 \\  & GAD-7 & 13.34 \(\pm\) 3.84 & 6.91 \(\pm\) 3.76 & \textless{}0.001 & 1.69 \\  & OHIP-14 & 30.77 \(\pm\) 7.57 & 11.75 \(\pm\) 7 & \textless{}0.001 & 2.61 \\  & WHO-5 & 6.77 \(\pm\) 3.73 & 10.77 \(\pm\) 3.55 & \textless{}0.001 & 1.10 \\  & PSQI & 15.64 \(\pm\) 2.43 & 10.57 \(\pm\) 2.22 & \textless{}0.001 & 2.18 \\ \hline \multirow{4}{*}{Awake bruxism without fibromyalgiagia} & JFLS-8 & 8.53 \(\pm\) 9.61 & 1.58 \(\pm\) 2.78 & \textless{}0.001 & 0.98 \\  & GAD-7 & 7.44 \(\pm\) 4.97 & 6.43 \(\pm\) 4.74 & 0.21 & 0.21 \\  & OHIP-14 & 14.53 \(\pm\) 8.83 & 10.53 \(\pm\) 6.72 & 0.02 & 0.51 \\  & WHO-5 & 12.60 \(\pm\) 5.01 & 10.78 \(\pm\) 5.42 & 0.01 & 0.35 \\  & PSQI & 8.78 \(\pm\) 3.78 & 8.22 \(\pm\) 3.27 & 0.17 & 0.16 \\ \hline \multirow{4}{*}{Sleep bruxism without fibromyalgiagia} & JFLS-8 & 8.47 \(\pm\) 10.02 & 0.93 \(\pm\) 2.24 & \textless{}0.001 & 1.04 \\  & GAD-7 & 7.31 \(\pm\) 4.47 & 4.78 \(\pm\) 3.63 & \textless{}0.001 & 0.62 \\  & OHIP-14 & 15.21 \(\pm\) 8.61 & 6.71 \(\pm\) 5.90 & \textless{}0.001 & 1.15 \\  & WHO-5 & 12.61 \(\pm\) 4.99 & 12.89 \(\pm\) 4.45 & 0.59 & 0.06 \\  & PSQI & 8.84 \(\pm\) 3.73 & 7.59 \(\pm\) 3.18 & \textless{}0.001 & 0.36 \\ \hline \multirow{4}{*}{Healthy group} & JFLS-8 & 2.15 \(\pm\) 5.11 & 1.46 \(\pm\) 3.48 & 0.07 & 0.16 \\  & GAD-7 & 4.07 \(\pm\) 4.56 & 3.78 \(\pm\) 4.38 & 0.52 & 0.06 \\ \cline{1-1}  & OHIP-14 & 6.35 \(\pm\) 6.98 & 5.33 \(\pm\) 4.78 & 0.22 & 0.17 \\ \cline{1-1}  & WHO-5 & 14.74 \(\pm\) 4.93 & 13.65 \(\pm\) 4.54 & 0.07 & 0.23 \\ \cline{1-1}  & PSQI & 5.78 \(\pm\) 2.49 & 5.22 \(\pm\) 1.99 & 0.01 & 0.25 \\ \hline \hline \end{tabular}  
* **Note**: JFLS-8: law functional limitation scale; GAD-7: General Anxiety Disorder-7; OHIP-14: Oral Health Impact Profile-14; WHO-5: World Health Organization Well-Being Index; PSQI: Pittsburgh Sleep Quality Index (PSQI).  
\end{table} 
Table 1: Differences pre- and post-occlusal split intervention in JFLS-8, GAD-7, OHIP-14, WHO-5, and PSQI. (\(p\) = 0.13), and headache attributed to bruxism (\(p\) = 0.13). For the ABG, significant differences were observed in all variables: joint sounds (\(p\) = 0.02), TMJ pain (\(p\) < 0.001), headache attributed to TMJ (\(p\) < 0.001), headache attributed to bruxism (\(p\) = 0.01), and jaw locking (\(p\) < 0.001). Regarding the SBG, significant differences were observed in all variables: joint sounds (\(p\) = 0.02), TMJ pain (\(p\) < 0.001), headache attributed to TMJ (\(p\) < 0.001), headache attributed to bruxism (\(p\) < 0.001), and jaw locking (\(p\) < 0.001). Finally, in HG, there were significant changes in TMJ pain (\(p\) < 0.001), headache attributed to TMJ (\(p\) < 0.001), and jaw locking (\(p\) < 0.001). Nevertheless, no significant changes were found for joint sounds (\(p\) = 0.63) or headache attributed to bruxism (\(p\) = 0.33).