Injectable Platelet Rich Fibrin (i-PRF) for Joint Sounds and Clinical Signs of Disc Displacement by DC/TMD: A Randomized Controlled Trial

Authors

DOI:

https://doi.org/10.58600/eurjther2853

Keywords:

joint sounds, intra-articular injections, disc displacement, platelet rich fibrin, randomized controlled trial, temporomandibular joint, temporomandibular joint disorders

Abstract

Objective: To evaluate the efficacy of injectable platelet-rich fibrin (i-PRF) versus a control solution (lactated Ringer’s) in modulating joint sounds and resolving clinical signs of disc displacement in patients with articular temporomandibular disorder (TMD).

Methods: This prospective, randomized, double blind controlled clinical trial enrolled 36 patients with articular TMD. Participants were allocated to two groups: the i-PRF Group (n = 18), which received three monthly intra-articular injections of i-PRF, and the Control Group (n = 18), which received lactated Ringer’s solution. The primary outcome was joint sound intensity measured on a visual analogue scale (VAS). Secondary outcomes were clinical diagnoses of disc displacement with and without reduction (DDWR/DDWoR) based on DC/TMD criteria, evaluated at baseline (T0) and six months post-intervention (T3).

Results: The i-PRF group showed a significantly greater reduction in joint sound intensity than the control group (mean reduction: 83.2% vs. 38.7%; p < 0.001). I-PRF also produced a significant resolution of DDWR (66.7% to 16.7%; p = 0.008) and DDWoR (33.3% to 5.6%; p = 0.041). At T3, the proportion of patients with clinical signs of disc displacement was significantly lower in the i-PRF group (p < 0.05 for both DDWR and DDWoR).

Conclusion: Intra-articular i-PRF therapy was superior to lactated Ringer’s in reducing joint sounds and resolving clinical signs of disc displacement in patients with articular TMD. I-PRF represents a safe, biologically active intervention for mechanical dysfunction of the temporomandibular joint.

Author Biographies

Leonardo Brigido Metello Neves, Department of Orofacial Pain and Temporomandibular Disorders, Hospital da Boca, Santa Casa da Misericórdia do Rio de Janeiro, Brazil

DDS, PhD in Dentistry. Researcher in Orofacial Pain and Temporomandibular Disorders at Hospital da Boca, Santa Casa da Misericórdia, and Estácio de Sá University, Rio de Janeiro, Brazil.

Bernardo Correia Lima, Department of Orofacial Pain and Temporomandibular Disorders, Hospital da Boca, Santa Casa da Misericórdia do Rio de Janeiro, Brazil

DDS, PhD. Assistant Professor at the School of Dentistry, Estácio de Sá University, Nova Iguaçu, Brazil. Researcher in temporomandibular disorders and orofacial pain.

Rafael Coutinho Mello Machado, School of Dentistry, Iguaçu University, Nova Iguaçu, Brazil

DDS, PhD. Professor at Iguaçu University, Nova Iguaçu, Brazil. Specialist in temporomandibular joint dysfunction and oral rehabilitation.

Bruno Luiz Baldessarini, American Dental Institute, United States

DDS. Researcher at the American Dental Institute, United States. Interests include orofacial pain and multidisciplinary dentistry.

Bruno Oliceira Bergamin, Department of Orofacial Pain and Temporomandibular Disorders, Hospital da Boca, Santa Casa da Misericórdia do Rio de Janeiro, Brazil

DDS, PhD Candidate in Dentistry at Estácio de Sá University, Rio de Janeiro, Brazil. Researcher at Hospital da Boca, Santa Casa da Misericórdia, focusing on temporomandibular disorders.

Marcelo Guerino Pereira Couto, Faculty of Dentistry, FAIPE, Garça Branca, Brazil

DDS, PhD. Professor at the Faculty of Dentistry, FAIPE, Garça Branca, Brazil. Researcher in prosthodontics and temporomandibular disorders.

Rafael Vidal Peres, Department of Orofacial Pain and Temporomandibular Disorders, Hospital da Boca, Santa Casa da Misericórdia do Rio de Janeiro, Brazil

DDS, PhD. Professor at the Postgraduate Program in Dentistry, Estácio de Sá University, Rio de Janeiro, Brazil. Supervisor of clinical research in temporomandibular joint disorders.

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Gender distribution across study groups and total sample. 

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Published

2026-02-24

How to Cite

Metello Neves, L. B., Lima, B. C., Machado, R. C. M., Baldessarini, B. L., Bergamin, B. O., Couto, M. G. P., & Peres, R. V. (2026). Injectable Platelet Rich Fibrin (i-PRF) for Joint Sounds and Clinical Signs of Disc Displacement by DC/TMD: A Randomized Controlled Trial. European Journal of Therapeutics. https://doi.org/10.58600/eurjther2853

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