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Graded pain score analysis
| Degree | Group | Pre-treatment (n) |
|---|---|---|
| No disability | Grade 0 | Absence of TMD and pain prior 6 months |
| Low disability | Grade I | Low intensity; CPI < 50, DP < 3 |
| Grade II | High intensity; CPI ≥ 50, DP < 3 | |
| High disability | Grade III | Moderately limiting; DP 3–4 (CPI unrelated) |
| Grade IV | Severely limiting; DP 5–6 (CPI unrelated) |
