Context: Status of bone-implant interface or osseointegration can be assessed by using resonance frequency analysis (RFA), which measures implant stability. A modified implant surface can significantly enhance osseointegration and reduce healing period. Platelet-rich fibrin (PRF) consists of fibrin mesh with entrapped platelets and leukocytes that release a huge number of growth factors which contribute to wound healing and tissue regeneration.
Aims: The present study aims to evaluate the effect of PRF on osseointegration in terms of implant stability.
Settings and design: This was a split-mouth randomized clinical trial.
Materials and methods: Sixty surgical sites were divided randomly into two groups. In Group 1 (thirty sites), PRF was placed in osteotomy sites before implant placement whereas no PRF was placed in Group 2 (thirty sites). Stability was measured using RFA in terms of implant stability quotient (ISQ) at baseline, 1 week, 1 month, and 3 months.
Statistical analysis: Intergroup comparison was done using Mann-Whitney U-test. Intragroup comparison was done using Friedman's test followed by pairwise comparison using Wilcoxon signed-rank test.
Results: On intergroup comparison, Group 1 showed higher values for ISQ which were statistically significant (P < 0.05) at 1 week and 1 month. No significant difference (P > 0.05) was found at baseline and 3 months. Intragroup comparison and further pairwise comparison revealed a highly significant difference for values between all pairs of time intervals (P < 0.01) with higher values at 3 months.
Conclusions: PRF has a significant effect on osseointegration of dental implants during the early healing period prior to loading.
Keywords: Dental implants; implant stability; osseointegration; platelet-rich fibrin; resonance frequency analysis.
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