Efficacy and Safety of Intra-Articular Therapies for Temporomandibular Disorders: A Systematic Review and Meta-Analysis.

OBJECTIVE

This systematic review and meta-analysis aimed to evaluate the most effective minimally invasive intra-articular procedure for reducing pain and improving maximum mouth opening (MMO) in individuals diagnosed with painful articular TMD, specifically TMJ osteoarthritis and/or internal derangement.

MATERIALS AND

METHODS

Only randomized clinical trials (RCTs) assessing the efficacy of minimally invasive procedures, such as arthrocentesis and intra-articular injection (IAI), were included. The meta-analysis included seven studies with a 6-month follow-up, while 23 studies with different follow-up periods were evaluated qualitatively.

RESULTS

The meta-analysis showed that IAI with tenoxicam was the most effective procedure for pain reduction, with the highest [7.44 mean difference (MD); 6.28-8.60 confidence interval (CI)], followed by opioids (5.93; 5.03-6.83), the combination of hyaluronic acid (HA) with platelet-rich plasma (PRP) (5.10; 4.52-5.68), and PRP alone (4.99; 3.13-6.85). For improvement in MMO, tenoxicam had the highest MD (+11.50 mm; 15.47-7.53), followed by PRP (+10.46 mm; 14.89-6.02) and the HA-PRP combination (+10.10 mm; 11.89-8.31).

CONCLUSIONS

Tenoxicam showed promising results for pain reduction and improvement in MMO, although the evidence remains limited, followed by opioids and the combination of HA and PRP with arthrocentesis. Further high-quality studies are needed to confirm their clinical applicability.