Purpose: The aim of this study was to investigate the effect of injectable PRF ( i-PRF) versus the autologous
blood injection (ABI) in management of chronic recurrent temporomandibular joint (TMJ) dislocation.
Patients and Methods: Thirty patients were participated in this study. They were randomly assigned to equalsized
groups (group I injected by autologous blood while group II injected by i-PRF). MRIs of the patients
were taken preoperatively, one, and three month after the injection. Also, a verbal scale expressing TMJ pain
on palpation, maximal mouth opening (MMO), and frequency of luxation were assessed at the same intervals.
Results: The results revealed that each treatment appeared to be effective for patients with recurrent TMJ dislocation.
Improvement was greater in i-PRF group than those with AB group.
Conclusion: It could be concluded that, each treatment seems to be effective for patients with chronic recurrent TMJ dislocation.
Additionally, i-PRF treatment may be highly effective to manage and improve function of chronic recurrent dislocated TMJ
compared with ABI .