Long term oral health related quality of life after TMJ arthrocentesis with hyaluronic acid. A retrospective cohort study

The purpose of the study was to assess the long-term oral health-related quality of life (oQoL) in patients with temporomandibular joint (TMJ) internal derangement (ID) after TMJ arthrocentesis plus hyaluronic acid (HA). Patients were analysed at different follow-up times using an analytical observational design. The Oral Health Impact Profile−14 (OHIP-14) score was evaluated according to age, sex, disc position, presence of degenerative joint disease (DJD), joint pain, maximum mouth opening and follow-up time. A total of 60 participants were enrolled, 88% female, with a mean age of 38 years (SD = 13.48). In an average follow-up of 25.02 months (SD = 5.32), the OHIP-14 total score decreased 8.67 (95% confidence interval [CI]: −11.21 to −6.11) after the intervention (Cohen's d = 1.22; 95% CI =0.81 to 1.64). All OHIP-14 domain scores decreased (p