Applicability of the Modified Brief Diagnostic Criteria for Temporomandibular Disorders in a Population‐Based Study: A Retrospective Evaluation
Tuukka Lohilahti, Laura Nykänen, Ville Vuollo, Ritva Näpänkangas, Kirsi SipiläABSTRACT
Background
Temporomandibular disorders (TMD) are common conditions impairing quality of life. While the Diagnostic Criteria for TMD (DC/TMD) are the international standard, its complexity and time requirements limit feasibility in primary care and large‐scale population studies.
Objective(s)
To evaluate the sensitivity and specificity of a modified brief DC/TMD (bDC/TMD) Axis I protocol relative to DC/TMD reference standard in a population‐based cohort and to explore the performance of an ultra‐brief protocol excluding movement‐evoked pain for myalgia and arthralgia.
Methods
Data from the Northern Finland Birth Cohort 1986 ( n = 1767) were utilized. Participants underwent clinical examinations based on original DC/TMD criteria. The bDC/TMD diagnoses were derived retrospectively by excluding non‐contributory items while retaining temple headache confirmation. Sensitivity, specificity and Cohen's kappa ( κ ) were calculated using the full DC/TMD protocol as the reference standard.
Results
The modified bDC/TMD demonstrated excellent agreement for pain‐related TMDs (sensitivity 0.81–0.87, specificity > 0.99; κ = 0.88 for myalgia, 0.89 for arthralgia and 0.89 for headache attributed to TMD). Agreement for joint‐related TMDs was lower: degenerative joint disease ( κ = 0.70) and disc displacement with reduction ( κ = 0.44). For the ultra‐brief version, agreement remained high for myalgia ( κ = 0.86) and arthralgia ( κ = 0.84).
Conclusion
The modified bDC/TMD protocol is a promising screening tool for painful TMDs in population‐based studies. However, it has limited accuracy for joint‐related conditions. The ultra‐brief approach shows potential for efficient use in population‐based research.