Effectiveness of Platelet-Rich Plasma Injection in Patients with Temporomandibular Joint Osteoarthritis: A Systematic Review and Meta-analysis of Randomized Controlled Trials

Publication date: Available online 26 September 2018

Source: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology

Author(s): Pei-Yu Chung, Meng-Ting Lin, Hsien-Po Chang

Abstract

Objective

To investigate the effectiveness of platelet-rich plasma (PRP) injection after arthrocentesis or arthroscopy in patients with temporomandibular joint (TMJ) osteoarthritis (OA).

Study Design

Electronic databases (PubMed, EMBASE, Scopus, and Cochrane Library) were searched up to July 30, 2018. We included all published or unpublished randomized controlled trials (RCT). The primary outcome was pain reduction, and the secondary outcome was the improvement of maximal mouth opening (MMO). Weighted mean differences (WMD) were utilized for random-effect meta-analysis.

Results

Five RCTs were enrolled in the meta-analysis, comparing PRP injection to placebo [hyaluronic acid (HA) injection, saline injection, or no injection]. The results revealed that PRP injection was more effective than placebo in pain reduction, but no in the improvement of MMO, in the long term. In the subgroup analysis, PRP injection yielded better outcome only in pain reduction comparing to hyaluronic acid (HA) injection [WMD: 1.34, 95% confidence interval (CI): 0.95–1.73].

Conclusions

This meta-analysis demonstrated that PRP injection provided adjuvant efficacy to arthrocentesis or arthroscopy in pain reduction for TMJ OA in the long term. Furthermore, PRP injection significantly reduced pain compared with HA injection, saline injection, or no injection.

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