Turkish Version of Helkimo Clinical Dysfunction Index

Based on the idea of making the Helkimo Clinical Dysfunction Index (HCDI) available in Turkish, our study aimed to translate this scoring system into Turkish and to test its validity and reliability as an outcome measurement method in individuals with temporomandibular dysfunction (TMD). The study aimed to include 40 patients. Pain intensity during palpation and chewing was measured using a numerical pain rating scale (NPRS), and range of jaw movement was measured using a linear ruler. Participants were then administered the HCDI, the Fonseca Anamnestic Index (FAI), and the Mandibular Function Impairment Questionnaire (MFIQ). To assess test-retest reliability, the same questionnaire was administered again to the same patients after two weeks. The FAI was used to test the validity of the questionnaire.