title: The efficacy of intra-articular sodium hyaluronate in patients with reducing displaced disc of the temporomandibular joint.
abstract: In this clinical trial, we examined the efficacy of intra-articular hyaluronic acid (HA) treatment in 38 patients with reducing displaced disc of the temporomandibular joint (TMJ). Subjects received two unilateral upper space injections of HA or physiological saline solution with 1 week apart. Efficacy was based on the following measurements: pain and sound intensity of the joint measured by visual analogue scale (VAS), modified Helkimo's clinical dysfunction index and the intensity of joint vibration during opening and closing the mouth measured by accelerometers. These measurements were performed before the first injection and 1 and 6 months after the last injection. In the treatment group (n=19), all measurements improved significantly at month 1 and at month 6 compared with the baseline (P < 0.01). The same measurements, in the placebo group (n=19), did not show any change, except for the pain intensity which improved at month 1 and month 6 (P < 0.05). The change in baseline measurements of all of the efficacy criteria at month 1 and at month 6 in the treatment group was significantly better compared with the change obtained with placebo at the same time intervals. This study demonstrates that intra-articular sodium hyaluronate (Orthovisc) injection into the TMJ is an effective treatment for a reducing displaced disc.
authors.affiliation: Department of Physical Medicine and Rehabilitation, School of Medicine, School of Dentistry, Ege University, Izmir, Turkey.
authors.forename: S
authors.initials: S
authors.lastname: Hepguler
authors.forename: Y S
authors.initials: YS
authors.lastname: Akkoc
authors.forename: M
authors.initials: M
authors.lastname: Pehlivan
authors.forename: C
authors.initials: C
authors.lastname: Ozturk
authors.forename: G
authors.initials: G
authors.lastname: Celebi
authors.forename: A
authors.initials: A
authors.lastname: Saracoglu
authors.forename: B
authors.initials: B
authors.lastname: Ozpinar
mesh_terms: D000328:Adult; D016009:Chi-Square Distribution; D004311:Double-Blind Method; D005157:Facial Pain / Q000188:drug therapy / Q000503:physiopathology; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D006820:Hyaluronic Acid / Q000008:administration & dosage / Q000627:therapeutic use*; D007270:Injections, Intra-Articular; D004204:Joint Dislocations / Q000188:drug therapy* / Q000503:physiopathology; D008297:Male; D010147:Pain Measurement; D010919:Placebos; D016059:Range of Motion, Articular / Q000502:physiology; D012074:Remission Induction; D012815:Signal Processing, Computer-Assisted; D012965:Sodium Chloride; D013016:Sound; D019224:Temporomandibular Joint Disc / Q000187:drug effects* / Q000503:physiopathology; D016896:Treatment Outcome; D014732:Vibration
chemical_list: D010919:Placebos; D012965:Sodium Chloride; D006820:Hyaluronic Acid