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Table 1 Shows the results of the TMJ clicking according to the Helkimo index

From: Evaluation of the efficacy of platelet rich fibrin (I-PRF) intra-articular injections in the management of internal derangements of temporomandibular joints – a controlled preliminary prospective clinical study

  Before the treatment N (%) After (I-PRF) injection for the first time N (%) After (I-PRF) injection a second time N (%) At the final follow-up session
N (%)
No joint sounds or deviation < 2 mm during mouth opening or closing 0 (0%) 14 (70) 20 (100%) 18 (90%)
Articulated noises or deviation > 2 mm during mouth opening or closing 20 (100%) 6 (30%) 0 (0%) 2 (10%)
Obstruction or dislocation of the joint 0 (0%) 0 (0%) 0 (0%) 0 (0%)
The sum 20 (100%) 20 (100%) 20 (100%) 20 (100%)