Abstract:
trismus in Oral Submucous Fibrosis (OSMF).
Study Design and setting: Randomized double-blind comparative study, conducted at ENT department of PNS Shifa
Hospital, Karachi from 1st June 2015 to 30th June 2016.
Methodology: Eighty patients with trismus due to oral submucous fibrosis were divided randomly into two groups, ‘A’
and ‘B’ of 40 patients each. In Group A, Inj. Triamcinolone 40mg (1 ml) was injected into the sub-mucosal plane in the
retro-molar trigone area and into the fibrous bands along the soft palate on multiple sites, weekly for 6 weeks. In group B
Inj. PRP 1ml weekly was administered for 6 weeks along the same site. Vernier calipers were used to precisely measure
the Maximum Interincisal Distance (MIID) in cms before and after the treatment.
Result: There was a male preponderance in the study group with a male to female ratio of 5.1:1. In group ‘A’ mean pretreatment
MIID was 2.3±0.7 cms, while in group ‘B’, it was 2.2± 0.5 cms. After completion of 6 weeks treatment the mean
MIID improved in group ‘A’ to 3.08 ± 0.8cms, and in group ‘B’ to 3.22± 0.5cms. The mean improvement in MIID in group
‘A’ was 0.783± 0.25cms compared to 1.01± 0.05 cms in group ‘B’ (p < 0.05).
Conclusion: Intraoral injection of PRP is more effective than Triamcinolone in improving trismus due to OSMF.